Sommer Lab Logo

Publications of the Department



Theska, T., Renahan, T. & R. J. Sommer (2024): Starvation resistance in the nematode Pristionchus pacificus requires a conserved supplementary nuclear hormone recptor. Zoological Letters, in press.

Kalirad, A. & Sommer, R. J. (2024): Spatial and temporal heterogeneity alters the cost of plasticity in Pristionchus pacificus. PLoS Computational Biology, in press.

Theska, T. & R. J. Sommer (2024). Feeding structure morphogenesis in ‘rhabditid’ and diplogastrid nematodes are not controlled by a conserved genetic module. Evolution & Development, accepted.

Kalirad, A. & Sommer, R. J. (2024): The role of plasticity and stochasticity in coexistence. Ecology Letters, in press.



Dardiry, M., Eberhardt, G., Witte, H., Roedelsperger, C., Lightfoot, J. W. & R. J. Sommer, R.J. (2023):  Divergent combinations of cis-regulatory elements control the evolution of phenotypic plasticity. PLoS Biology, 21, e3002270.

Jung, R., Lechler, M. C., Rödelsperger, C., Röseler, W., Sommer, R. J., David, D. C. (2023): Tissue-specific safety mechanism results in opposite protein aggregation patterns during aging. PLoS Biology, 21, e3002284.

Werner, M. S., Loschko, T., Franz-Wachtel, M., Theska, T., Macek, B. & R. J. Sommer (2023): Histone 4 lysine 5/12 acetylation enables developmental plasticity of Pristionchus mouth form. Nature Communications, 14: 2095.

Dardiry, M., Piskobulu, V., Kalirad, A. & Sommer, R. J. (2023). Experimental and theoretical support for costs of plasticity and phenotype in a nematode cannibalistic trait. Evolution Letters, 7, 48-57.

Yoshida, K., Rödelsperger, C., Röseler, W., Riebesell, M., Sun, S., Kikuchi, T. & Sommer, R. J. (2023): Chromosome fusions repatterned recombination rate and facilitated reproductive isolation during nematode speciation. Nature Ecology & Evolution, 7, 424-439.



Igreja, C., Loschko, T., Schäfer, A., Sharma, R., Quiobe, S. P., Aloshy, E., Witte, H. & Sommer, R. J. (2022): Application of ALFA-tagging in the nematode model organisms Caenorhabditis elegans and Pristionchus pacificus. Cells, 11, 3875

Wighard, S. S., Athanasouli, M., Witte, H., Rödelsperger, C. & Sommer, R. J. (2022): A new hope: A hermaphrotditic nematode enables analysis of a recent whole genome duplication event. Genome Biology and Evolution, 14, evac169.

Lo, W.-S., Roca, M., Dardiry, M., Mackie, M., Eberhardt, G., Witte, H., Hong, R., Sommer, R. J. & J. W. Lightfoot (2022): Evolution and diversity of TGF-β signalling pathways are linked with novel developmental and behavioural traits. Molecular Biology and Evolution, 39, msac252.

Sun, S., Witte, H. & Sommer, R. J. (2022): Chitin contributes to the formation of a feeding structure ina predatory nematode. Current Biology, 33, 1-13

        Featured in: Woodruff, G. C. (2023): Developmental genetics: The structural basis of malleable teeth. Current Biology, 33, R106-R108

Renahan, T. & R. J. Sommer (2022): Multidimensional competition of nematodes affects plastic traits in a beetle ecosystem. Front. Cell Dev. Biol., 10, 985831

Röseler, W., Collenberg, M., Yoshida, K., Lanz, C., Sommer, R.J. & Rödelsperger, C. (2022): The improved genome of the nematode Parapristionchus giblindavisi provides insights into lineage-specific gene family evolution. G3, in press

Lo, W.-S., Han, Z., Witte, H., Röseler, W. & R. J. Sommer (2022): Synergistic interaction of gut microbiota enhances the growth of nematode through neuroendocrine signaling. Current Biology, 32, 2037-2050.

Featured in: MacNeil, L.T. (2022): Microbiomes: How a gut bacterium promotes healthier living in a nematode. Current Biology, 32, R428-R430

Leaver, M., Moreno, E., Kayhan, M., McGaughran, A., Rödelsperger, C., Sommer, R.J., A. A. Hyman (2022): Adaptation to environmental temperature in divergent clades of the nematode Pristionchus pacificus. Evolution, 76, 1660-1673,

Igreja, C. & Sommer, R. J. (2022): The role of sulfation in nematode development and phenotypic plasticity. Front. Mol. Bioscience, 9, 838148.

Han, Z., Sieriebriennikov, B., Susoy, V., Lo, W.-S., Igreja, C., Dong, C., Berasategui, A., Witte, W. & R. J. Sommer (2021): Horizontally acquired cellulases assist the expansion of dietary range in the nematode Pristionchus pacificus. Molecular Biology and Evolution, 39, msab370.

Lo, W.-S. & R. J. Sommer (2022): Vitamin B12 and predatory behavior in nematodes. In: Vitamin B12. Vol. 119 of Vitamins and Hormones. (Ed.: G. Litwack). Academic Press. In press.

Kalirad, A. & Sommer, R. J. (2022): The art of mechanistic modeling in Biology. Nature Computational Science, 2, 72.

Lenuzzi, M., Witte, H., Riebesell, M., Rödelsperger, C., Hong, R.L. & Sommer, R. J. (2022): Influence of environmental temperature on mouth-form plasticity in Pristionchus pacificus acts through daf-11-depenednet cGMP signaling. J. Exp. Zool. B, 1-11.

Sommer, R. J. & J. W. Lightfoot (2022): The genus Pristionchus: a model for phenotypic plasticity, predatory behavior, self-recognition and other complex traits. In: Nematodes as biological models (Eds.: I. Glazer, D. Shapiro-Ilan & P. W. Sternberg). Cabi Publishing, Wallingford, UK, pp. 1-23.



Sun, S., Theska, T., Witte, H., Roedelsperger, C., Ragsdale, E. J. & R. J. Sommer (2021): The Mucin-type hydrogel forming protein DPY-6 has aconserved role in nematode mouth and cuticle formation. Genetics, 220, iyab233.

Renahan, T. & R. J. Sommer (2021): Nematode interactions on beetle hosts indicate a role of mouth-form plasticity in resource competition. Frontiers in Ecology and Evolution, 9:752695.Sun, S., Rödelsperger, C. & Sommer, R.J. (2021): Single worm transcriptomics identifies a developmental core network of oscillating genes with deep conservation across nematodes. Genome Research, 31, 1590-1601.

Sun, S., Rödelsperger, C. & R. J. Sommer (2021): Single worm transcriptomics isentifies a developmental core network of oscillating genes with deep conservation across nematodes. Genome Research, 31, 1590-1601.

Lightfoot, J. W., Dardiry, M., Kalirad, A., Giaimo, S., Eberhardt, G., Witte, H., Wilecki, M., Roedelsperger, C., Traulsen, A., & Sommer, R.J. (2021):  Sex or cannibalism: polyphenism and kin recognition control social action startegies in nematodes. Science Advances, 7, eabg8042.

Kanzaki, N., Herrmann, M., Weiler, C., Röseler, W., Theska, T., Berger, J., Rödelsperger, C. & Sommer, R.J. (2021): Nine new Pristionchus (Nematoda: Diplogastridae) species from China. Zootaxa, 4943, 1-66.

Rödelsperger, C., Ebbing, A., Sharma, D. R., Okumura, M., Sommer, R. J. & Korswagen, H. C. (2021): Spatial transcriptomics of nematodes identifies sperm cells as a source of genomic novelty and rapid evolution. Mol. Biol. Evol., 38, 229-243.

Hunang, F., Srisuka, W., Aupalee, K., Streit, A., Fukuda, M., Pitasawat, B., Junkum, A., Saingamsook, J., Somboon, P.,Takaoka, H. and Saeung, A. (2021): Diversity of nematodes infecting the human-biting black flies, Simulium nigrogilvum (Diptera: Simuliidae) in central Thailand. Acta Tropica, in press.

Dulovic, A., Norman, M., Harbecke, D. and Streit, A. (2021): Chemotaxic and temperature-dependent responses of the Strongyloidoidea superfamily of nematodes. Parasitology, in press.

Streit, A. (2021): What do rescue experiments with heterologous proteins tell us and what not? Parasitology Research in press (Opinion, special issue on "New technologies in parasitology"). Full Text PDF

Yalcindag, E., Stuart, P., Hasegawa, H., Streit, A., Doležalová, J., Morrogh-Bernard, H., Cheyne, S. M., Nurcahyo, W. and Foitová, I. (2021): Genetic Characterization of Nodular Worm Infections in Asian Apes. Scientific Reports, 11:7226.



Renahan, T., Lo, W.-S., Werner, M. S., Herrmann, M., Rochat, J. & Sommer, R.J. (2020): Nematode biphasic ‘boom and bust’ dynamics are dependent on host bacterial load while linking dauer and mouth-form polyphenisms. Environmental Microbiology, 23, 5102-5113.

       Featured in: Kanzaki, N. (2021): New insights into the tripartite relationship between microbes, nematodes and insects. Environmental Microbiology, Feb 15. doi: 10.1111/1462-2920.15438.

Han, Z., Lo, W.-S., Lightfoot, J. W., Witte, H., Sun, S. & R. J. Sommer (2020): Improving trangenesis efficiency and CRISPR-associated tools through codon optimization and native intron addition in nematodes. Genetics, 216, 947-956.

Athanasouli, M., Witte, H., Weiler, C., Loschko, T., Eberhardt, G., Sommer, R. J. and C. Roedelsperger (2020): Comprataive genomics and community curation further improve gene annotation in te nematode Pristionchus pacificus. BMC Genomics, 21, 708.

Rödelsperger, C., Ebbing, A., Sharma, D. R., Okumura, M., Sommer, R. J. & H. C. Korswagen (2020): Spatial transcriptomics of nematodes identifies sperm cells as a source of genomic novelty and rapid evolution. Mol. Biol. Evol., in press

Theska, T., Sieriebriennikov, B., Wighard, S. S., Werner, M. S. & Sommer, R. J. (2020): Geometric morphometrics of microscopic animals as exemplified in model nematodes. Nature Protocols, 15, 2611-2644.

Dong, C., Weadick, C. J., Truffault, V. & Sommer, R. J. (2020): Convergent evolution of small-molecule pheromones in Pristionchus nematodes. eLIFE, 9, e55687. DOI:

Galotta, I., Sandhu, A., Peters, M., Haslbeck, M., Jung, R., Agilkaya, S., Blersch, J.L., Rödelsperger, C., Röseler, W., Huang, C., Sommer, R.J., David, D.C. (2020): Extracellular proteostasis prevents aggregation during pathogenic attack. Nature, 584, 410-414.

     Featured in: Webster, B.M., Gildea, H.K. & Dillin, A. (2020): Protein homeostasis from the outside in. Nature Cell Biology,

Aupalee, K. , Wijit, A., Singphai, K., Rödelsperger, C., Zhou, S. Saeung, A., Streit, A. (2020): Genomic studies on Strongyliodes stercoralis in northern and western Thailand. Parasites & Vectors, 13:250.

Sommer, R. J. (2020): Phenotypic Plasticity: from theory and genetics to current and future challenges. Genetics, 215, 1-13.

Sieriebriennikov, B., Sun, S., Lightfoot, J.W., Witte, H., Moreno, E., Rödelsperger, C., & Sommer, R.J. (2020): Conserved hormone-recptors controlling a novel plastic trait target fast-evolving genes expressed in a single cell. PLoS Genetics, 16, e1008687.

Renahan, T., & Sommer, R. J. (2020): Mechanisms of murderous mushrooms paves path for parasitic helminth halt. Proc. Natl. Aca. Sci., U. S. A., 117, 6974-6975.

Akduman, N., Roedelsperger, C., Lightfoot, J. W., Roeseler, W., Witte, H., Lo, W.-S. & Sommer, R. J. (2020): Bacterial diet-derived vitamin B12 enhances nematode predation and surplus-killing. The ISME Journal,

Dulovic, A., Renahan, T., Röseler, W., Rödelsperger, C, and Streit, A. (2020): Rhabditophanes diutinus a Parthenogenetic Clade IV Nematode with Dauer Larvae. PLOS Pathogens, 16(12): e1009113.

Streit, A. (2020): Strongyloidiasis - Really a Zoonosis? In: Mehlhorn, H. and Strube, C. (Eds), Dog parasites endangering human health. Springer, Cham. pp. 195-226.

Aupalee, K., Saeung, A., Srisuka, W., Fukuda, M., Streit, A. and Takaoka, H. (2020b): Seasonal Filarial Infections and Their Black Fly Vectors in Chiang Mai Province, Northern Thailand. Pathogens, 9:521.

Paguem, A., Abanda B., Ngwasiri, N. N., Eisenbarth, A., Renz, A., Streit, A. and Achukwi, M. D. (2020): Host Specificity and Phylogeny of Trichostrongylidae of Domestic Ruminants in the Guinea savannah of the Adamawa Plateau in Cameroon. Veterinary Parasitology: Regional Studies and reports, 21:100412.



Moreno, E., Lightfoot, L. J., Lenuzzi M., & Sommer, R. J. (2019): Cilia drive developmental plasticity and are essential for efficient prey detection in predatory nematodes, Proc. Roy. Soc. B, 286, 1343.

Zhou, S., Harbecke, D. and Streit, A. (2019): From the feces to the genome: a guideline for the isolation and preservation of Strongyloides stercoralis in the field for genetic and genomic analysis of individual worms. Parasites & Vectors, 12:496.

Rödelsperger, C., Prabh, N. & Sommer, R. J. (2019): Young gene origin and deep taxon phylogenomics – opportunities and challenges. Trends in Genetics, 35, 914-922.

Loer, C., Witte, H., Sommer, R. J. & Hobert, O. (2019): An antibody staining protocol variation for nematodes that adds heat-induced antigen retrieval (HIAR). microPublication Biology, doi: 10.17912/micropub.biology.000135.

Hong, R. L., Riebesell, M., Bumbarger, D., Cook, S. J., Sarpolaki, T., Carstensen, H. R., Cochella, L., Castrejon, J., Moreno, E., Siebriebriennikov, B., Hobert, O. & Sommer, R. J. (2019):
Evolution of neuronal anatomy and circuitry in highly divergent nematode species. eLIFE, 8, e47155.

    Featured in: Neff, E. P. (2019): A tail of two worm brains. Lab Animal, 48, 331.

Lightfoot, J. W., Wilecki, M., Roedelsperger, C., Moreno, E., Susoy, V., Witte, H., Sommer, R. J. (2019): Small peptide mediated self-recognition prevents cannibalism in predatory nematodes. Science, 364, 86-89. doi:10.1126/science.aav9856 [Abstract] [Full text] [Reprint]

Zhou, S., Fu, X., Pei, P., Kucka, M., Liu, J., Tang, L., Zhan, T., He, S., Chan, Y., Rödelsperger, C., Liu, D. & Streit, A. (2019): Characterization of a non-sexual population of Strongyloides stercoralis with hybrid 18S rDNA haplotypes in Guangxi, Southern China. PLOS Neglected Tropical Diseases,13(5): e0007396.

Dulovic, A. and Streit, A. (2019): RNAi-mediated knockdown of daf-12 in the model parasitic nematode Strongyloides ratti. PLOS Pathogens, in press, doi:10.1371/journal.ppat.1007705

Herrmann, M., Kanzaki, N., Weiler, C., Yoshia, K., Rödelsperger, C. & Sommer, R. J. (2019): Two new Species of Pristionchus (Nematoda: Diplogastridae) include the Gonochoristic Sister Species of P. fissidentatus. J. of Nematology, 51, 1-14.

Campos-Herrera, R., Blanco-Pérez, R., Bueno-Pallero, F. A., Duarte, A., Nolasco, G., Sommer, R. J. & Martín, J. A. R. (2019): Vegetation drives assemblages of entomopathogenic nematodes and other soil oranisms: evidence from Algarve, Portugal. Soil Biology and Biochemistry, 128, 150-163.


Werner, M. S., Claassen, M. H., Renahan, T., Dardiry, M. & Sommer, R. J. (2018): Adult Influence on Juvenile Phenotypes by Stage-Specific Pheromone Production. iScience, 10, 123-134.

Moreno, E., Lenuzzi, M., Rödelsperger, C., Prabh, N., Witte, H., Roeseler, W., Riebesell, M. & Sommer, R. J. (2018): DAF-19/RFX controls ciliogenesis and influences oxygen-induced social behaviours in Pristionchus pacificus. Evol & Devel., 20, 233-243.

Werner, M. S., Sieriebriennikov, B., Prabh, N., Loschko, T., Lanz, C. & Sommer, R. J. (2018): Young genes have distinct gene structure, epigenetic profiles, and transcriptional regulation. Genome Research, 28, 1675-1687.

Prabh, N., Roeseler, W., Witte, H., Eberhardt, G., Sommer, R. J. & Rödelsperger, C. (2018): Deep taxon sampling reveals the evolutionary dynamics of novel gene families in Pristionchus nematodes. Genome Research, 28, 1664-1674.

Sieriebriennikov, B. & Sommer, R. J. (2018): Developmental plasticity and robustness of a nematode mouth-form polyphenism. Frontiers in Genetics, 9, 382.

Rödelsperger, C., Röseler, W., Prabh, N., Yoshida, K., Weiler, C., Herrmann, M. & Sommer, R. J. (2018): Phylotransciptomics of Pristionchus nematodes reveals parallel gene loss in six hermaphroditic lineages. Current Biology, 28, 3123-3127.

Kanzaki, N., Herrmann, M., Yoshida, K., Weiler, C., Rödelsperger, C. & Sommer, R. J. (2018): Samplings of Millipedes in Japan and Scarab Beetles in Hongkong result in five new Species of Pristionchus (Nematoda: Diplogastridae). J. of Nematology, 50, 587-610.

Yoshida, K., Herrmann, M., Kanzaki, N., Weiler, C., Rödelsperger, C. & Sommer, R. J. (2018): Two new species of Pristionchus (Nematoda: Diplogastridae) from Taiwan and the definition of the pacificus species-complex sensu stricto. J. of Nematology, 50, 355-368.

Namdeo, S., Moreno, E., Rödelsperger, C., Baskaran, P., Witte, H. & Ralf J. Sommer, R. J. (2018): Two independent sulfation processes regulate mouth-form plasticity in the nematode Pristionchus pacificus. Development, 145: dev166272.

Akduman, N., Rödelsperger, C., & Sommer, R. J. (2018): Culture-based analysis of Pristionchus-associated microbiota from beetles and figs for studying nematode-bacterial interactions. PLoS ONE, 13: e0198018.

Sieriebriennikov, B., Prabh, N., Dardiry, M., Witte, H., Rödelsperger, C., Röseler, W., Kieninger, M. R. & Sommer, R. J. (2018): A developmental switch generating phenotypic plasticity is part of a conserved multi-gene locus. Cell Reports, 23, 2835-2843.

Rödelsperger, C. (2018): Comparative genomics of gene loss and gain in Caenorhabditis and other nematodes. Methods Mol Biol., 1704: 419-432.

Jaleta, T. G., Roedelsperger, C., Abanda, B. Eisenbarth, A., Achukwi, M. D, Renz, A. and Streit, A. (2018): Full mitochondrial and nuclear genome comparison confirms that Onchocerca sp. "Siisa" is Onchocerca ochengi. Parasitology Research, 117, 1069-1077.

Falcke, J. M., Bose, N., Artyukhin, A. B., Rödelsperger, C., Markov, G. V., Yim, J. J., Grimm, D., Claassen, M., Panda, O., Baccile, J. A., Le, H. H., Jolic, D., Schroeder, F. C. & Sommer, R. J. (2018): Linking genomic and metabolomic natural variation uncovers nematode pheromone biosynthesis. Cell Chemical Biology, 25, 787-796.e12.

Moreno, E. & Sommer, R. J. (2018): A cilia-mediated environmental input induces solitary behaviour in Caenorhabditis elegans and Pristionchus pacificus nematodes. Nematology, 20, 201-209.


Moreno, E., Sieriebriennikov, B., Witte, H., Rödelsperger, C., Lightfoot, J. W. & Sommer, R. J. (2017): Regulation of hyperoxia-inducted social behaviour in Pristionchus pacificus nematodes requires a novel cilia-mediated environmental input. Scientific Reports, 7: 17550.

Rödelsperger, C., Meyer, J. M., Prabh, N., Lanz, C., Bemm, F. & Sommer, R. J. (2017):
Single-molecule sequencing reveals the chromosome-scale genomic architecture of the nematode model organism Pristionchus pacificus. Cell Reports, 21, 834-844.

Okumura, M., Wilecki, M. & Sommer, R. J. (2017): Serotonin drives predatory feeding behavior via synchronous feeding rhytms in the nematode Pristionchus pacificus. G3, 7, 3745-3755.
Riebesell, M. & Sommer, R. J. (2017):
Three-dimensional reconstruction of the pharyngeal gland cells in the predatory nematode Pristionchus pacificus. J. Morphology, 278, 1656-1666.

Holz, A. and Streit, A. (2017): Gain and loss of small RNA classes - characterization of small RNAs in the parasitic nematode family Strongyloididae. Genome Biology and Evolution, 9, 2826-2843.

Jaleta, T. G., Zhou. S., Bemm, F., Khieu, V., Sinuon, M., Schär, F., Odermatt, P. and Streit, A. (2017): Different but overlapping populations ofStrongyloides stercoralis in dogs and humans - dogs as a possible source for zoonotic strongyloidiasis. PLOS Neglected Tropical Diseases, 11(8): e0005752.

Werner, M., Sieriebriennikov, B., Loschko, T., Namdeo, S., Lenuzzi, M., Renahan, T., Dardiry, M., Raj, D. & Sommer, R. J. (2017): Environmental influence on Pristionchus pacificus mouth-form through different culture methods. Scientific Reports, 7: 7207.

Herrmann, M., Kanzaki, N., Ragsdale, E. J. & Sommer, R. J. (2017): Redescription of four species of the genus Pristionchus (Nematoda: Diplogastridae) from the United States of America. Dumerilia, 7, 97-103.

Sieriebriennikov, B., Markov, G. V., Witte, H., & Sommer, R. J. (2017): The role of DAF-21/Hsp90 in mouth-form plasticity in Pristionchus pacificus. Molecular Biology & Evolution, 34, 1644-1653.

Serobyan, V. & Sommer, R. J. (2017): Developmental systems of plasticity and trans-generational inheritance in nematodes. Curr. Opin. Genet. & Devel., 45, 51-57.

Sommer, R. J., Dardiry, M., Lenuzzi, M., Namdeo, S., Renahan, T., Sieriebriennikov, B. & Werner, M. (2017): The genetics of phenotypic plasticity in nematode feeding structures. Open Biology, 7: 160332.

Meyer, J. M., Baskaran, P., Quast, C., Susoy, V., Rödelsperger, C., Glöckner, F. O.  & Sommer, R. J. (2017): Succession and dynamics of Pristionchus nematodes and their microbiome during decomposition of Oryctes borbonicus on La Réunion Island. Environm. Microbiology, 19, 1476-1489.

Featured in:
Giblin-Davis, R. M. (2017): Who has “Dibs!” on a dead rhinoceros beetle? Environm. Microbiology, 19, 2115-2116.

Baskaran, P., Jaleta, T. G., Streit, A. and Rödelsperger, C. (2017): Duplications and positive selection drive the evolution of parasitism-associated gene families in the nematode Strongyloides papillosus. Genome Biology and Evolution, 9, 790-801.

Morgan, K., McGaughran, A., Rödelsperger, C. & Sommer, R. J. (2017): Variation in rates of spontaneous male production and recombination within the nematode species P. pacificus supports an adaptive role for males and outcrossing. BMC Evol. Biol., 17: 57.

Weadick, C. J. & Sommer, R. J. (2017): Interspecific hybrids and the genetics of lifespan in Pristionchus nematodes. J. Evol. Biol., 30, 650-657.

Streit, A. (2017): Genetics: Modes of Reproduction and Genetic Analysis. Parasitology, 316-326 (Review, special issue on Strongyloides spp.).

Jaleta, T. G., Rödelsperger, C. and Streit, A. (2017). Parasitological and transcriptomic comparison of Strongyloides ratti infections in natural and in suboptimal permissive hosts. Experimental Parasitology, 180, 112-118 (special issue "Proceedings of the 27th Meeting of the German Society for Parasitology 2016")


Streit, A. and Davis, R. E. (2016): Chromatin diminution version 2. In: eLS. John Wiley & Sons Ltd, Chichester (Review). doi:10.1002/9780470015902.a0001181.pub2

Sanghvi, G. V., Baskaran, P., Röseler, W., Sieriebriennikov, B., Rödelsperger, C., & Sommer, R. J. (2016): Life history responses and gene expression profiles of the nematode Pristionchus pacificus cultured on Cryptococcus yeasts. PLoS ONE, 11: e0164881.

Herrmann, M., Weiler, C., Rödelsperger, C., Kanzaki, N. & Sommer R.J. (2016): Two new Pristionchus Species (Nematoda: Diplogastridae) from Taiwan are part of a species-cluster representing the closest known relatives of the Model Organism P. pacificus. Zoological Studies, 55: 48.

Weadick, C. J. & Sommer, R. J. (2016a): Unexpected sex-specific post-reproductive lifespan in the free-living nematode Pristionchus exspectatus. Evolution & Development, 18, 297-307.

Leaver, M., Kienle, S., Begasse, M. L., Sommer, R. J. & Hyman, T. A. (2016): A locus in Pristionchus pacificus responsible for the ability to give rise to fertile offspring at higher temperature. Biol Open5, 1111-1117.

Serobyan, V., Xiao, H., Rödelsperger, C., Namdeo, S., Röseler, W., Witte, H. & Sommer, R. J. (2016): Chromatin remodeling and antisense-mediate up-regulation of the developmental switch gene eud-1 control predatory feeding plasticity. Nature Commun., 7: 12337.

Kieninger, M. R., Ivers, N. A., Rödelsperger, C., Markov, G. V., Sommer, R. J.  & Ragsdale, E. J. (2016): The nuclear hormone receptor NHR-40 acts downstream of the sulfatase EUD-1 as part of a developmental plasticity switch in Pristionchus. Current Biology26, 2174-2179.

Dulovic, A., Puller, V. & Streit, A. (2016): Optimizing culture conditions for free-living stages of the nematode parasite Strongyloides rattiExperimental Parasitology, 168, 25-30.

Meyer, J., Markov, G., Baskaran, P., Herrmann, M., Sommer, R. J. & Rödelsperger, C. (2016): Draft genome of the scarab beetle Oryctes borbonicus on La Réunion Island. Gen. Biol. Evol.8, 2093-2105.

McGaughran, A., Rödelsperger, C., Grimm, D. G., Meyer, J. M., Moreno, E., Morgan, K., Leaver, M., Serobyan, V., Rakitsch, B., Borgwardt, K. M.  & Sommer, R. J. (2016): Genomic Profiles of Diversification and Genotype-Phenotype Association in Island Nematode Lineages. Mol Biol Evol.33, 2257-2272.

Markov, G. V., Meyer, J. M., Panda, O., Artyukhin, A. B., Claaßen, M., Witte, H., Schroeder, F. C. & Sommer, R. J. (2016): Functional conservation and divergence of daf-22 paralogs in P. pacificus dauer development. Mol Biol Evol.33, 2506-2514.

Lightfoot, J. W., Wilecki, M., Okumura, M. & Sommer, R. J. (2016): Assaying predatory feeding behavior in Pristionchus and other nematodes. Jove., J. Vis. Exp.115: e54404.

Streit, A., Wang, J., Kang, Y. & Davis, R. E. (2016): Gene silencing and sex determination by programmed DNA elimination in parasitic nematodes. Current Opinion in Microbiology32, 120-127.

Susoy, V. & Sommer, R. J. (2016): Stochastic and Conditional Regulation of Nematode Mouth-Form Dimorphisms. Frontiers in Ecology and Evolution, 4: 23.

Moreno, E., McGaughran, A., Zimmer, M. & Sommer, R. J. (2016): Oxygen-induced social behaviors in Pristionchus pacificus have a distinct evolutionary history and genetic regulation than Caenorhabditis elegans. Proc. Roy. Soc. B, 283(1825):20152263. doi: 10.1098/rspb.2015.2263.

Sommer, R. J. (2016): The role of Next-generation-Sequencing for integrative approaches in evo-devo and population genetics. pp. 229-236. In: Next-generation Systematics (Eds: J. Hughes and P. Olson). Cambridge Univ. Press, Cambridge.

Hunt, V. L., Tsai, I. J., Coghlan, A., Reid, A. J., Holroyd, N., Foth, B. J., Tracey, A., Cotton, J. A., Stanley, E. J., Beasley, H., Bennett, H., Brooks, K., Harsha, B., Kajitani, R., Kulkarni, A., Harbecke, D., Nagayasu, E., Nichol, S., Ogura, Y., Quail, M., Randle, N., Ribeiro, D., Sanchez-Flores, A., Hayashi, T., Itoh, T., Denver, D. R., Grant, W., Stoltzfus, J. D., Lok, J. B., Murayama, H., Wastling, J., Streit, A., Kikuchi, T., Viney, M. E., Matthew Berriman, M. (2016): The Genomic Basis of Parasitism in the Strongyloides Clade of Nematodes. Nature Genetics, 48, 299-307. doi:10.1038/ng.3495

Susoy, V., Herrmann, M., Kanzaki, N., Kruger, M., Nguyen, C. N., Rödelsperger, C., Röseler, W., Weiler, C., Giblin-Davis, R. M., Ragsdale, E. J. & Sommer, R. J. (2016): Large-scale diversification without genetic isolation in nematode symbionts of figs. Science Advance, 2: e1501031.
Featured in: Phillips, P. C. (2016): Five heads is better than one. Current Biology26: R283-285.

Weadick, C. J. & Sommer, R. J. (2016): Mating system transitions drive lifespan evolution in Pristionchus nematodes. American Naturalist, 187, 517-529. 

Kulkarni, A., Holz, A., Rödelsperger, C., Harbecke, D. & Streit, A. (2016): Differential chromatin amplification and chromosome complements in the germline of Strongyloididae (Nematoda). Chromosoma125, 125-136.

Kulkarni, A., Lightfoot, J. W. & Streit, A. (2016): Germline organization in Strongyloides nematodes reveals alternative differentiation and regulation mechanisms. Chromosoma, 125, 725-745. doi:10.1007/s00412-015-0562-5

Rödelsperger, C., Menden. K., Serobyan. V., Witte, H. & Baskaran, P. (2016):
First insights into the nature and evolution of antisense transcription in nematodes. BMC Evol Biol., 16: 165.

Prabh, N. & Rödelsperger, C. (2016): Are orphan genes protein-coding, prediction artifacts, or non-coding RNAs? BMC Bioinformatics, 17: 226.

Lightfoot, J. W., Chauhan, V. M., Aylott, J. W. & Rödelsperger, C. (2016): Comparative transcriptomics of the nematode gut identifies global shifts in feeding mode and pathogen susceptibility. BMC Res Notes., 9: 142.


Mayer, M. G. & Sommer, R. J. (2015): Nematode orphan genes are adopted by conserved regulatory networks and find a home in ecology. Worm, 4: e1082029.

Sommer, R. J. & Mayer, M. G. (2015): Towards a synthesis of developmental biology with evolutionary theory and ecology. Cell & Developmental Biology, 31, 453-471.

Sommer, R. J. (2015): Nematoda. In: Evolutionary developmental biology of Invertebrate Vol. 3 (Ed.: A. Wanninger). Springer, Heidelberg, pp. 15-34.

Herrmann, M., Neuner, J., Vötsch, M., Wörner, J., Kanzaki, N. & Sommer, R. J. (2015): Pristionchus scratchpads - an online platform for taxonomy, systematics and phylogeny. Zootaxa, 3949, 597-600.

Guo, L., Chang, Z., Dieterich, C. & Streit, A. (2015): A protocol for chemical mutagenesis in Strongyloides rattiExperimental Parasitology, 158, 2-7.

Yim, J., Bose, N., Meyer, J. M., Sommer, R. J. & Schroeder, F. C. (2015): Nematode signaling molecules derived from multimodular assembly of primary metabolic building blocks. Org. Lett., 17, 1648-1651.

Mayer, M. G., Rödelsperger, C., Witte H., Riebesell, M. & Sommer, R. J. (2015): An orphan gene regulates intraspecific competition in nematodes by copy number variation. PLoS Genetics, 11: e1005146. doi:10.1371/journal.pgen.1005146. Featured in: Mahalak, K.K. & Chamberlin, H.M. (2015): Orphan genes find a home: interspecific competition and gene network evolution. PLoS Genetics, 11: e1005254.

Sommer, R. J. (2015): Integrative evolutionary biology and mechanistic approaches in comparative biology. In: Pristionchus pacificus - a nematode model for comparative and evolutionary biology (Ed.: R. J. Sommer). Brill, Leiden, pp. 19-41.

Wilecki, M., Lightfoot, J., Susoy, V. & Sommer, R. J. (2015): Predatory feeding behavior in Pristionchus nematodes is dependent on a phenotypic plasticity and induced by serotonin. J. Exp. Biol., 218, 1306-1313.

Wegensteiner, R., Wermelinger, B., Herrmann, M. (2015): Natural enemies of bark beetles: Predators, parasitoids, pathogens and nematodes. In: Bark beetles: Biology and ecology of native and invasive species (eds. Vega F.E., Hofstetter R.W.). Academic Press, London, pp. 247-304.

Susoy, V., Ragsdale, E. J., Kanzaki, N. & Sommer, R. J. (2015): Rapid diversification associated with a macroevolutionary pulse of developmental plasticity. eLIFE, 4: e05463. Featured in: Nijhout, H.F. (2015): To plasticity and back again. eLIFE, 4: e06995.

Witte, H., Moreno, E., Rödelsperger, C., Kim, J., Kim, J.-S., Streit A. & Sommer, R. J. (2015): Gene inactivation using the CRISPR/Cas9 system in the nematode Pristionchus pacificus. Dev Genes & Evol., 225, 55-62.

Baskaran, P., Rödelsperger, C., Prabh, N., Serobyan, V., Markov, G. V., Hirsekorn, A. & Dieterich, C. (2015): Ancient gene duplications have shaped developmental stage-specific expression in Pristionchus pacificusBMC Evol Biology, 15: 185.

Baskaran, P. & Rödelsperger, C. (2015): Microevolution of Duplications and Deletions and Their Impact on Gene Expression in the Nematode Pristionchus pacificusPLoS One, 10(6): e0131136.

Markov, G.,  Baskaran, P. & Sommer, R. J. (2015): The same or not the same: Lineage-specific gene expansions and homology relationship in multigene families in nematodes. J Mol Evol., 80, 18-36.


Sommer, R. J. (2014): Evolution – der Schlüssel zum Verständnis der biologischen Vielfalt. In: Evolution. Sammelband der Vorträge der Studium Generale der Ruprecht-Karls-Universität Heidelberg (Ed. Karlheinz Sonntag), Universitätsverlag Winter Heidelberg, pp. 11-29.

Cinkornpumin, J. K., Wisidagama, D. R., Rapoport, V., Go, J. L., Dieterich, C., Wang, X., Sommer, R. J. & Hong, R. L. (2014): A host beetle pheromone regulates development and behavior in the nematode Pristionchus pacificus. eLIFE, 3: e03229.

Iatsenko, I., Yim, J., Schroeder, F. & Sommer, R. J. (2014): Bacillus subtilis GS67 protects C. elegans from Gram-positive pathogens via fengycin-mediated microbial antagonism. Current Biology, 24, 2720-2727.

McGaughran, A. & Sommer, R. J. (2014): Natural variation in cold tolerance in the nematode Pristionchus pacificus: the role of genotype and environment. Biol. OPEN, 3, 832-838.

Schär, F., Guo. L., Streit, A., Khieu, V., Sinuon, M., Marti, H and Odermatt, P. (2014): Strongyloides stercoralis genotypes in humans in Cambodia. Parasitology International, 63, 533-536.

Serobyan, V., Ragsdale, E. J. & Sommer, R. J. (2014): Adaptive value of a predatory mouth-form in a dimorphic nematode. Proc. Roy. Soc. B, 281: 20141334.

Streit, A. (2014): How to become a parasite without sex chromosomes: a hypothesis for the evolution of Strogyloides sp. and related nematodes. Parasitology 141, 1244-1254 (Review).

Iatsenko, I., Nikolov, A. & Sommer, R. J. (2014): Identification of distinct Bacillus thuringiensis 4A4 nematicidal factors using the model nematodes Pristionchus pacificus and Caenorhabditis elegans. Toxins, 6, 2050-2063.

Hildebrandt, J. C., Eisenbarth, A., Renz, A. and Streit, A. (2014): Reproductive biology of Onchocerca ochengi, a nodule forming filarial nematode in zebu cattle. Veterinary Parasitology, 205, 318-329. 

Sinha, A., Langnick, C., Sommer, R. J. & Diederich, C. (2014): Genome-wide analysis of trans-splicing in the nematode Pristionchus pacificus unravels conserved gene functions for germline and dauer development in divergent operons. RNA, 20, 1386-1397.

Bose, N., Meyer, J. M., Yim, J. J., Mayer, M. G., Markov G. V., Ogawa, A., Schroeder, F. C., Sommer, R. J. (2014): Natural variation in dauer pheromone production and sensing supports intraspecific competition in nematodes. Current Biology, 24, 1536-1541.

Susoy, V. & Herrmann, M. (2014): Preferential host switching and codivergence shaped radiation of bark beetle symbionts, nematode of Micoletzkya (Nematoda:Diplogastridae). Journal of Evolutionary Biology, 27, 889-898.

Ragsdale, E. J., Kanzaki, N. & Sommer, R. J. (2014): Levipalatum texanum n. gen., n. sp. (Nematoda: Diplogastridae) an androdioecious species from the south-eastern USA. Nematology, 16, 695-709.

Iatsenko, I., Boichenko, J. & Sommer, R. J. (2014): Bacillus thuringiensis DB27 produces two novel toxins, Cry21Fa1 and Cry21Ha1, which act synergistically against nematodes. Appl. & Envir. Microbiology, 80, 3266-3275.

Kanzaki, N., Ragsdale, E., Herrmann, M., & Sommer, R. J. (2014): Two new and two recharacterized species resulting from a radiation of Pristionchus (Nematoda: Diplogastridae) in Europe. J. of Nematology, 46, 60-74.

Iatsenko, I., Corton, C., 

Pickard, D. J., Dougan, G. & Sommer, R. J. (2014): Draft genome sequence of highly nematicidal Bacilllus thuringiensis DB27. Genome Announcements, 2: e00101-14. DOI: 10.1128/genomeA.00101-14.

Rödelsperger, C., Neher, R. A., Weller, A., Eberhardt, G., Witte, H., Mayer, W., Dieterich, C. & Sommer, R. J. (2014): Characterization of genetic diversity in the nematode Pristionchus pacificus from population-scale resequencing data. Genetics, 196, 1153-1165.

Weller, A., Rödelsperger, C., Eberhardt, G., Molnar, R. I., & Sommer, R. J. (2014): Opposing forces of A/T-biased mutations and G/C-biased gene conversions shape the genome of the nematode Pristionchus pacificus. Genetics, 196, 1145-1152.

Schierenberg, E. & Sommer, R. J. (2014): Gastrotricha, Cycloneuralia and Gnathifera; Volume 2: Nematoda. In: Handbook of Zoology (Ed.: Schmidt-Rhaesa). De Gruyter, pp 61-108.

Kanzaki, N., Ragsdale, E., Susoy, V., & Sommer, R. J. (2014): Leptojacobus dorci n. gen., n. sp. (Nematoda: Diplogastridae), an associate of Dorcus stag beetles (Coleoptera: Lucanidae). J. of Nematology, 46, 50-59.

McGaughran, A., Morgan K. & Sommer, R. J. (2014): Environmental variables explain genetic structure in a beetle-associated nematode. PLOS ONE, 9: e87317.

Penkov, S., Ogawa, A., Schmidt, U., Tate, D., Zagoriy, V., Boland, S., Gruner, M., Vorkel, D., Verbavatz, J.-M., Sommer, R. J., Knölker, H.-J. & Kurzchalia, T. V. (2014): A wax ester promotes collective host finding in the nematode Pristionchus pacificus. Nature Chemical Biol., 10, 281-285.

Morgan, K., McGaughran, A., Ganeshan, S., Herrmann, M., & Sommer, R. J. (2014): Landscape and oceanic barriers shape dispersal and population structure in the  Island nematode Pristionchus pacificus. Biol. Journal Linnean Soc., 112, 1-15.


Ragsdale, E. J., Müller, M. R., Roedelsperger, C. & Sommer, R. J. (2013): A developmental switch coupled to the evolution of plasticity acts through a sulfatase. Cell, 155, 922-933.

Featured in:
Hartenstein, V. & Jacobs, D. (2013):
Developmental plasticity, straight from the worm´s mouth. Cell, 155, 742-743.

McGaughran, A., Morgan K. & Sommer, R. J. (2013): Natural variation in chemosensation: lessons from an island nematode. Ecol. & Evol., 3, 5209-5224.

Rödelsperger, C. & Streit, A. (2013): Komplexität im Kleinen - Nematoden-Genome im Vergleich. BioSpektrum, 06.13, 606-610.

Iatsenko, I., Sinha, A., Rödelsperger, C. & Sommer, R. J. (2013): New Role for DCR-1/Dicer in Caenorhabditis elegans Innate Immunity against the Highly Virulent Bacterium Bacillus thuringiensis DB27, Infection and Immunity, 81, 3942-3957.

Herrmann, M., Ragsdale, E. J., Kanzaki, N., & Sommer, R. J. (2013): Sudhausia aristotokia n. gen., n. sp. and S. crassa n. gen., n. sp. (Nematoda: Diplogastridae): viviparous new species with precocious gonad development. Nematology, 15, 1001-1020.

Kulkarni, A., Dyka, A., Nemetschke, L., Grant, W. N. & Streit, A. (2013): Parastrongyloides trichosuri suggests that XX/XO sex determinatin is ancestral in Strongyloididae (Nematode). Parasitology, 140, 1822-1830.

Kanzaki, N., Ragsdale, E. J., Herrmann, M., Susoy, V., & Sommer, R. J. (2013): Two androdioecious and one dioecious new species of Pristionchus (Nematoda: Diplogastridae): new reference points for the evolution of reproductive mode. Journal of Nematology, 45, 172-194.

Sommer, R. J. & Ogawa, A. (2013): The genome of Pristionchus pacificus and the evolution of parasitism. In: Parasitic nematodes: Molecular biology, Biochemistry and Immunology. (Eds. M. Kennedy & W. Harnett), pp 1-14.

Eisenbarth, A., Ekale, D., Hildebrandt, J. C., Achukwi, M. D, Streit, A. and Renz, A. (2013): Molecular evidence of ‘Siisa form’, a new genotype related to Onchocerca ochengi in cattle from North Cameroon. Acta Tropica, 127, 261-265.

Ragsdale, E. J., Kanzaki, N., Roeseler, W., Herrmann, M. & Sommer, R. J. (2013): Three new species of Pristionchus (Nematoda: Diplogastridae) show morphological divergence through evolutionary intermediates of a novel feeding-structure polymorphism. Zool. J. Linn. Soc., 168, 671-698.

Kienle, S. & Sommer, R. J. (2013): Cryptic variability in vulva development by cis-regulatory evolution of a HAIRY binding site. Nature Comm., 4: 1714.

Kanzaki, N., Ragsdale, E. J., Herrmann, M., Roeseler, W. & Sommer, R. J. (2013): Two new species of Pristionchus (Nematoda: Diplogastridae) support the biogeographic importance of Japan for the evolution of the genus Pristionchus and the model system P. pacificus. Zool. Sci, 30, 680-692.

Sommer, R. J. & McGaughran, A. (2013): The nematode Pristionchus pacificus as a model system for integrative studies in evolutionary biology. Mol. Ecol., 22, 2380-2393.

Kanzaki, N., Ragsdale, E. J., Herrmann, M., Roeseler, W. & Sommer, R. J. (2013): Pristionchus bucculentus n. sp. (Rhabditida: Diplogastridae) isolated from a shining mushroom beetle (Coleoptera: Scaphidiidae) in Hokkaido, Japan. J. of Nematology, 45, 78-86.

McGaughran, A., Morgan K. & Sommer, R. J. (2013): Unravelling the evolutionary history of the nematode Pristionchus pacificus: from lineage diversification to island colonization. Evolution & Ecology, 3, 667-675.

Serobyan, V., Ragsdale, E. J., Müller, M. R. & Sommer, R. J. (2013): Feeding plasticity in the nematode Pristionchus pacificus is influenced by gender and social context and is linked to developmental speed. Evolution & Development, 15, 161-170.

Susoy, V., Kanzaki, N. & Herrmann, M. (2013): Description of the bark beetle associated nematodes Micoletzkya masseyi n. sp and M. japonica n. sp (Nematoda: Diplogastridae). Nematology, 15, 213-231.

Bumbarger, D. J., Riebesell, M., Rödelsperger, C. & Sommer, R. J. (2013): System-wide rewiring underlies behavioral differences in predatory and bacterial-feeding nematodes. Cell, 152, 109-119.

Rödelsperger, C., Streit, A. & Sommer, R. J. (2013): Structure, function and evolution of the nematode genome. In: eLS. John Wiley & Sons, Ltd: Chichester. doi: 10.1002/9780470015902.a0024603.

Sommer, R. J. (2013): Die Rolle der Entwicklungsbiologie für die Evolution. In: Charles Darwin: Die Entstehung der Arten (Eds.: Prof. Paul und Saskia Wrede), VHC Verlag, Weilheim, pp 445-454.


Hui, F., Scheib, U., Hu, Y, Sommer, R. J., Aroian, R. V. & Ghosh, P. (2012): Structure and glycan binding properties of the nematicidal protein Cry5b. Biochemistry, 51, 9911-9921.

Bose, N., Ogawa, A., von Reuss, S. H., Yim, J. J., Ragsdale, E. J., Sommer, R. J. & Schroeder, F. C. (2012): Complex small molecular architectures regulate phenotypic plasticity in a nematode. Angewandte Chemie, 51, 12438-12443.

Streit, A. (2012): Silencing by throwing away: a role for chromatin diminution. Developmental Cell, 23, 918-919 (Preview).

Borchert, N., Krug, K., Gnad, F., Sommer, R.J. & Macek, B. (2012): Phosphoproteome of Pristionchus pacificus provides insights into architecture of signaling networks in nematode models. Mol Cell Proteomics, 11, 1631-1639.

Sinha, A., Rae, R., Iatsenko, I. & Sommer, R. J. (2012): System wide analysis of the evolution of innate immunity in the nematode model species Caenorhabditis elegans and Pristionchus pacificus. PLoS ONE, 7, e44255.

Rae, R., Sinha, A. & Sommer, R. J. (2012): Genome-wide analysis of germline signaling genes regulating longevity and innate immunity in the nematode Pristionchus pacificus. PLoS Pathogens, 8, e1002864.

Schuster, L. N. & Sommer, R. J. (2012): Expressional and functional variation of horizontally acquired cellulases in the nematode Pristionchus pacificus. Gene, 506, 274-282.

Molnar, R. I., Witte, H., Dinkelacker, I., Villate, L. & Sommer, R. J. (2012): Tandem-repeat patterns and mutation rates in microsatellites of the nematode model organism Pristionchus pacificus. G3, 2, 1027-1034.

Rae, R., Witte, H., Rödelsperger, C. & Sommer, R. J. (2012): The importance of being regular: Caenorhabditis elegans and Pristionchus pacificus defecation mutants are hypersusceptible to bacterial pathogens. Int. J. Parasit., 42, 747-753.

Markov, G. & Sommer, R. J. (2012): The evolution of novelty in conserved gene families. Int. J. Evol. Biol., 2012, 490894. (review article).

Hildebrandt, J. C., Eisenbarth, A., Renz, A. & Streit, A. (2012): Single worm genotyping demonstrates that Onchocerca ochengi females simultaneously produce progeny sired by different males. Parasitology Research, 111, 2217-2221.

Sinha, A., Sommer, R. J. & Dieterich, C. (2012): Divergent gene expression in the conserved dauer stage of the nematodes Pristionchus pacificus and Caenorhabditis elegans. BMC Genomics, 13, 254.

Susoy, V. & Herrmann, M. (2012): Validation of the genus Rhabditolaimus Fuchs, 1914 (Nematoda: Diplogastridae) supported by integrative taxonomic evidence. Nematology , 14, 595-604.

Kanzaki, N., Ragsdale, E. J., Herrmann, M., & Sommer, R. J. (2012): Two new species of Pristionchus (Rhabditida: Diplogastridae) P. fissidentatus n.sp. from Nepal and La Réunion island and P. elegans n.sp. from Japan. J. of Nematology, 44, 80-91.

Kanzaki, N., Ragsdale, E. J., Herrmann, M., Mayer, W. E., Tanaka, R. & Sommer, R. J. (2012): Parapristionchus giblindavisi n. gen, n. sp. (Rhabditida: Diplogastridae) isolated from stag beetles (Coleoptera: Lucanidae) in Japan. Nematology, 14, 933-947.

Kanzaki, N., Ragsdale, E. J., Herrmann, M., Mayer, W. E. & Sommer, R. J. (2012): Description of three Pristionchus species (Nematoda: Diplogastridae) from Japan that form a cryptic species complex with the model organism P. pacificus. Zool. Science, 29, 403-417.

Sommer, R. J. & Bumbarger, D. J. (2012): Nematode model systems in evolution and development. WIREs Dev Biol, 1: 389-400. doi: 10.1002/wdev.33.

Sommer, R. J. (2012): Evolution of regulatory networks: nematode vulva induction as an example of developmental systems drift. Adv Exp Med Biol, 751, 79-91.

Morgan, K., McGaughran, A., Villate, L., Herrmann, M., Witte, H., Bartelmes, G., Rochat, J. & Sommer, R. J. (2012): Multi locus analysis of Pristionchus pacificus on La Réunion Island reveals an evolutionary history shaped by multiple introductions, constrained dispersal events and rare out-crossing. Mol Ecol., 21 (2), 250-266.


Rödelsperger, C. & Sommer, R. J. (2011): Computational archeology of the Pristionchus pacificus genome reveals evidence of horizontal gene transfers from insects. BMC Evol. Biol., 11: 239.

Featured in:

Danchin, E.G.J. (2011):
 What Nematode genomes tell us about the importance of horizontal gene transfers in the evolutionary history of animals. Mobile Genetic Elements1: 4.

D’Anna, I. & Sommer, R. J. (2011): Pristionchus uniformis – should I stay or should I go? Recent host range expansion in an European nematode. Ecology and Evolution, 1, 468-478.

Sommer, R. J. & Ogawa, A. (2011): Hormone signaling and phenotypic plasticity in nematode development and evolution. Curr. Biol., 21, R758-R766.

Sommer, R. J. & Streit, A. (2011): Comparative genetics and genomics of nematodes: Genome structure, development and life style. Ann. Rev. Genet., 45, 1-20.

Wang, X. & Sommer, R. J. (2011): Antagonism of LIN-17/Frizzled and LIN-18/Ryk in nematode vulva induction reveals evolutionary alterations in core developmental pathways. PLoS Biology, 9, e1001110.

Featured in:
Burgess, D. J. (2011): Evo-devo: Hidden rewiring comes to light. Nature Reviews Genetics, 12, 586-587.

Featured in:
Robinson, R. (2011): Different paths, same structure: "developmental systems drift" at work. PLoS Biology, 9 (7), e1001113.

Molnar, R. I., Bartelmes, G., Dinkelacker, I., Witte, H. & Sommer, R. J. (2011): Mutation rates and intraspecific divergence of the mitochondrial genome of Pristionchus pacificus. Mol. Biol. Evol., 28, 2317-2326.

Rae, R. & Sommer, R. J. (2011): Bugs don´t make worms kill. J of Exp. Biology. 214, 1053.

Brown, F. D., D’Anna, I., Sommer, R. J. (2011): Host-finding behaviour in the nematode Pristionchus pacificus. Proc. R. Soc. B, 278, 3260-3269.

Mayer, M. G. & Sommer R. J. (2011): Natural variation in Pristionchus pacificus dauer formation reveals cross-preference rather than self-preference of nematode dauer pheromones. Proc. R. Soc. B, 278, 2784-2790.

Ogawa, A., Bento, G., Bartelmes, G., Dieterich, C. & Sommer, R. J. (2011): Pristionchus pacificus daf-16 is essential for dauer formation but dispensable for mouth form dimorphism. Development, 138, 1281-1284.

Mayer, W. E., Schuster, L., Bartelmes, G., Dieterich, C & Sommer R. J. (2011): Horizontal gene transfer of microbial cellulases into nematode genomes is associated with functional assimilation and gene turnover. BMC Evolutionary Biology, 11: 13.

Featured in:
Scholl, E. H., Bird D. M. (2011): Computational and phylogenetic validation of nematode horizontal gene transfer. BMC Biology. 9: 9.

Herrmann, M. & Sommer, R. J. (2011): The genome of Pristionchus pacificus and implications for survival attributes. In: Molecular and Physiological Basis of Nematode Survival (Eds.: R. Perry & D. Wharton). pp 86-98.

Sommer, R. J. (2011): Zur wissenschaftlichen Vielfalt der modernen Evolutionsbiologie. In: Charles Darwin und seine Bedeutung für die Wissenschaften (Eds.: Prof. E.-M. Engels, O. Betz, H.-R. Köhler, Th. Potthast). Attempto Verlag , pp 77-88.

Sommer, R. J. (2011): Zum Wissenschaftsverständnis der modernen Evolutionsbiologie. In: Evolutionstheorie – Akzeptanz und Vermittlung im europäischen Vergleich (Ed.: D. Graf). Springer Verlag, Berlin, pp 91-98.


Rae, R., Iatsenko, I., Witte, H. & Sommer, R. J. (2010): A subset of naturally isolated Bacillus strains show extreme virulence to the free-living nematodes Caenorhabditis elegans and Pristionchus pacificus. Environmental Microbiology, 11, 3007-3021.

Streit, A. & Sommer, R. J.(2010): Random expression goes binary. Nature 463, 891-892.

Borchert, N., Dieterich, C., Krug, K., Schütz, W., Jung, S., Nordheim, A., Sommer R. J. & Macek, B. (2010): Proteogenomics of Pristionchus pacificus reveals distinct proteome structure of nematode models, Genome Research, 20, 837-846.

Weller, A., Mayer, W., Rae, R. & Sommer, R. J. (2010): Quantitative assessment of the nematode fauna present on Geotrupes dung beetles reveals species-rich communities with a heterogenous distribution. J. of Parasit., 96 (3), 525-531.

Herrmann, M., Kienle, S., Rochat, J., Mayer, W., & Sommer, R. J. (2010): Haplotype diversity of the nematode Pristionchus pacificus on Réunion in the Indian Ocean suggests multiple independent invasions. Biol. J. Linn. Soc., 100, 170-179.

Nemetschke, L., Eberhardt, A. G., Hertzberg, H. and Streit, A. (2010). Genetics, chromatin diminution and sex chromosome evolution in the parasitic nematode genus Strongyloides. Current Biology, 20, 1687-1696.

Featured in:
Charlesworth, B. (2010). Sex Determination: A Worm Does It by Elimination. Current Biology, 20, R841-R843.

Nemetschke, L., Eberhardt, A. G., Viney, M. E. & Streit, A. (2010): A genetic map of the animal-parasitic nematode Strongyloides ratti. Molecular and Biochemical Parasitology, 169, 124-127.

Bento, G., Ogawa, A. & Sommer, R. J. (2010): Co-option of the hormone-signalling module dafachronic acid–DAF-12 in nematode evolution. Nature, 466, 494-497.

Featured in:
Kiontke, K., Fitch, D. H. (2010): Phenotypic plasticity: different teeth for different feasts. Current Biology, 20 (17), R710-712.


Ogawa, A. & Sommer, R. J. (2009): Strategies to get arrested. Science, 326, 944-945.

Yi, B., Bumbarger, D. & Sommer, R. J. (2009): Genetic evidence for pax-3 function in myogenesis in the nematode Pristionchus pacificus. Evol. & Devel., 11, 669-679.

Mayer, W. E., Herrmann, M., Sommer, R. J. (2009): Molecular phylogeny of beetle associated diplogastrid nematodes suggests host switching rather than nematode-beetle coevolution. BMC Evolutionary Biology, 9:212.

Sommer, R. J. (2009): The future of evo-devo: model systems and evolutionary theory. Nature Rev. Genetics, 10, 416-422.

Dieterich, C. & Sommer, R. J. (2009): How to become a parasite – lessons from the genomes of nematodes. Trends in Genetics, 25, 203-209.

Sommer, R. J. & Riebesell, M. (2009): Die Entstehung der biologischen Formenvielfalt und das Verhältnis zwischen Entwicklungsbiologie und Evolutionsforschung. In: Charles Darwin und seine Wirkung (Ed.: E.-M. Engels). Suhrkamp Verlag, pp 276-302.

Schlager, B., Wang, X., Braach, G. & Sommer, R. J. (2009): Molecular cloning of a dominant roller mutant and establishment of DNA-mediated transformation in the nematode model Pristionchus pacificus. Genesis, 47, 300-304.

Featured in:
Lok,  J. B. (2009): Transgenesis in parasitic nematodes: building a better array. Trends in Parasitology, 25 (8), 345-347.

Ogawa, A., Streit, A., Antebi, A. & Sommer R. J. (2009): A conserved endocrine mechanism controls the formation of dauer and infective larvae in nematodes. Current Biology, 19, 67-71.

Featured in:
Viney, M. E. (2009): How did parasitic worms evolve? Bioessays, 31 (5), 496-499.

Featured in:
Wong, W. (2009): How to evolve into a parasite. Science Signaling, 2 (54), ec26.

Minasaki, R., Puoti, A. and Streit, A. (2009): The DEAD-box protein MEL-46 is required in the germ line of the nematode Caenorhabditis elegans. BMC Developmental Biology, 9, 35.

Wegewitz, V., Schulenburg, H. & Streit, A. (2009): Do males facilitate the spread of novel phenotypes within populations of the androdioecious nematode Caenorhabditis elegans. Journal of Nematology, 41, 247-254.


Rudel, D., Tian, H. & Sommer, R. J. (2008): Wnt signaling in Pristionchus pacificus gonadal arm extension and the evolution of organ shape. Proc. Natl. Aca. Sci., 105, 10826-10831.

Dieterich, C., Clifton, S. W., Schuster, L. N.,Chinwalla,  A., Delehaunty, K., Dinkelacker, I., Fulton, L., Fulton, R., Godfrey, J., Minx, P., Mitreva, M., Roeseler, W., Tian, H., Witte, H., Yang, S.P., Wilson, R. K., Sommer,  R. J. (2008): The Pristionchus pacificus genome provides a unique perspective on nematode lifestyle and parasitism. Nature Genetics, 40, 1193-1198.

Featured in:
Srinivasan, J., Sternberg, P. W. (2008): Pristionchus pacificus: an appropriate fondness for beetles. Nature Genetics, 40 (10), 1146-1147.

Eberhardt, A. G., Mayer, W. E., Bonfoh, B. and Streit, A. (2008): The Strongyloides (Nematoda) of sheep and the predominant Strongyloides of cattle form at least two different, genetically isolated populations. Veterinary Parasitology, 157, 89-99.

Wegewitz, V., Schulenburg, H. and Streit, A. (2008): Experimental insight into the proximate causes of male persistence variation among two strains of the androdioecious Caenorhabditis elegans (Nematoda). BMC Ecology, 8, 12.

Sommer, R. J. (2008): Homology and the hierarchy of biological systems. BioEssays, 30, 653-658.

Hong, R. L., Svatos, A., Herrmann, M. & Sommer, R. J. (2008): Species-specific recognition of beetle cues by the nematode Pristionchus maupasi. Evol. & Devel., 10, 273-279.

Hong, R. L., Witte, H. & Sommer, R. J. (2008): Natural variation in Pristionchus pacificus insect pheromone attraction involves the protein kinase EGL-4. Proc. Natl. Aca. Sci., 105, 7779-7784.

Featured in:
Sokolowski, M. B., Fitzpatrick, M. J. (2008): Behavioural genetics: worms seek that old beetle smell. Current Biology, 18 (11), R480-482.

Sommer, R. J. & Riebesell, M. (2008): Die Entstehung der biologischen Formenvielfalt - Zur Bedeutung der Entwicklungsbiologie für die Evolutionsforschung. In: Die Evolution des Lebendigen (Eds.: H. Köhler & O. Betz). Attempto Verlag, Tübingen, pp. 58-79.
Dieterich, C. & Sommer R. J. (2008): A Caenorhabditis motif compendium for studying transcriptional gene regulation. BMC Genomics, 9, 30.

Tian, H, Schlager, B., Xiao, H. & Sommer, R. J. (2008): Wnt signaling induces vulva development in the nematode Pristionchus pacificus. Current Biology, 18, 142-146.

Zauner, H. and Sommer, R. J. (2008): Evolution and development: Towards a synthesis of macro- and micro-evolution with ecology. In: Evolving pathways: Key themes in evolutionary developmental biology (Eds.: A. Minelli & G. Fusco). Cambridge University Press, Cambridge, pp. 157-171.

Streit, A. (2008): Reproduction in Strongyloides (Nematoda): a life between sex and parthenogenesis. Parasitology, 135, 285-294 (Review).

Rae, R., Riebesell, M., Dinkelacker, I., Wang, Q., Herrmann, M., Weller, A. M., Dieterich, C. & Sommer, R. J. (2008): Isolation of naturally associated bacteria of necromenic Pristionchus nematodes and fitness consequences. J. Exp. Biology, 211, 1927-1936.

Rae, R., Schlager, B. & Sommer, R. J. (2008): Pristionchus pacificus, a genetic model system for evolutionary developmental biology and the evolution of complex life-history traits. In: Emerging model organisms. (Ed.: N. Patel). Cold Spring Harbor Laboratory Press, pp. 275-290.


Zauner, H., Mayer, W. E., Herrmann, M., Weller, A., Erwig, M. & Sommer, R. J. (2007): Distinct patterns of genetic variation in Pristionchus pacificus and Caenorhabditis elegans, two partially selfing nematodes with cosmopolitan distribution. Molecular Ecology, 16, 1267-1280.

Minasaki, R. and Streit, A. (2007): MEL-47, a novel protein required for early cell divisions in the nematode Caenorhabditis elegans., Mol. Genet. Genomics, 277, 315-328.

Zauner, H. and Sommer, R. J. (2007): Evolution of robustness in the signaling network of Pristionchus vulva development. PNAS, 104, 10086-10091.

Eberhardt, A. G., Mayer, W. E. & Streit, A. (2007): The free-living generation of the nematode Strongyloides papillosus undergoes sexual reproduction. International Journal for Parasitology, 37, 989-1000.

Mayer, W. E., Herrmann, M. & Sommer, R. J. (2007): Phylogeny of the nematode genus Pristionchus and implications for biodiversity, biogeography and the evolution of hermaphroditism. BMC Evol Biol, 7:104.

Yi, B. & Sommer, R. J. (2007): The pax-3 gene is involved in vulva formation in Pristionchus pacificus and is a target of the Hox gene lin-39. Devolopment, 134, 3111-3119.

Gutierrez, A. and Sommer, R. J. (2007): Functional diversification of the nematode mbd2/3 gene between Pristionchus pacificus and Caenorhabditis elegans. BMC Genetics, 8:57.

Sommer, R. J. (2007): Population genetics meets development. Book review. Tinkering: The microevolution of development. Novartis Foundation. BioEssays, 29, 1062-1063.

Torday, J. S., Rehan, V. K., Hicks, J. W., Wang, T., Maina, J., Weibel, E. R., Hsia, C. C., Sommer, R. J. & Perry, S. F. (2007): Deconvoluting lung evolution: from phenotypes to gene regulatory networks. Integrative and Comparative Biology, 47, 601-609.

Herrmann, M., Mayer, W. E., Hong, R. L., Kienle, S., Minasaki, R. & Sommer, R. J. (2007): The Nematode Pristionchus pacificus (Nematoda: Diplogastridae) is associated with the Oriental Beetle Exomala orientalis (Coleoptera: Scarabaeidae) in Japan. Zoological Science, 24, 883-889.

Rätsch, G., Sonnenburg, S., Srinivasan, J., Witte, H., Müller, K. R., Sommer, R. J. & Schölkopf, B. (2007): Improving the C. elegans genome annotation using machine learning. PLoS Computational Biology, 3:e20.

Kiontke, K., Barrière, A., Kolotuev, I., Podbilewicz, B., Sommer, R. J., Fitch, D. & Félix, M.-A. (2007): Trends, stasis, and drift in the evolution of nematode vulva development. Current Biology, 17, 1925-1937.

Dieterich, D., Roeseler, W., Sobetzko, P. & Sommer, R. J. (2007): A genome-centric database of the nematode satellite species Pristionchus pacificus. Nucleic Acids Res., 35, D498-D502.


Photos, A., Gutierrez, A. & Sommer, R. J. (2006): sem-4/spalt and egl-17/FGF have a conserved role in sex myoblast specification and migration in P.pacificus and C.elegans. Developmental Biology, 293, 142-153.

Herrmann, M., Mayer, W. E. & Sommer, R. J. (2006): Nematodes of the genus Pristionchus are closely associated with scarab beetles and the Colorado potato beetle in Western Europe. Zoology, 109, 96-108.

Hong, R. L. and Sommer, R. J. (2006): Pristionchus pacificus: a well-rounded nematode. Bio Essays, 28, 651-659.

Schlager, B., Röseler, W., Zheng, M., Gutierrez, A. & Sommer, R. J. (2006): HAIRY-like transcription factors and the evolution of the nematode vulva equivalence group. Current Biology, 16, 1386-1394.

Featured in:
Chamberlin, H. M. (2006): Nematode development: new tricks for old genes. Current Biology, 16 (14), R532-533.

Sommer, R. J. (2006): New inroads to development. Development, 133, 2451-2453.

Herrmann, M., Mayer, W. E. & Sommer, R. J. (2006b): Sex, bugs and Haldane’s rule: the nematode genus Pristionchus in the United States. Frontiers in Zoology, 3:14.

Hong, R. L. and Sommer, R. J. (2006b): Chemoattraction in Pristionchus nematodes and implications for insect recognition. Current Biology, 16, 2359-2365.


Rudel, D., Riebesell, M. & Sommer, R. J. (2005): Gonadogenesis in Pristionchus pacificus and organ evolution: development, adult morphology and cell-cell interactions in the hermaphrodite gonad. Developmental Biology, 277, 200-221.

Zheng, M., Messerschmidt, D. Jungblut, B. & Sommer, R. J. (2005): Conservation and diversification of Wnt signaling function during the evolution of nematode vulva development. Nature genetics, 37, 300-304.

Featured in:
Félix, M. A. (2005): An inversion in the wiring of an intercellular signal: evolution of Wnt signaling in the nematode vulva. Bioessays, 27 (8), 765-769.

Sommer, R. J. (2005): Evolution of development in nematodes related to C. elegans. WormBook, 1-17. doi:10.1895/wormbook.1.46.1.

Hong, R. L., Villwock, A. & Sommer, R. J. (2005): Cultivation of the rhabditid Poikilolaimus oxycercus as a laboratory nematode for genetic analyses. J Exp Zool A Comp Exp Biol, 303, 742-760.

Takacs-Vellai, K., Vellai, T., Puoti, A., Passannante, M., Wicky, C., Streit, A., Kovacs, A. L. & Müller, F. (2005): Inactivation of the autophagy gene bec-1 triggers apoptotic cell death in C. elegans. Current Biology15, 1513-1517.


Srinivasan, J., Otto, G. W., Kahlow, U., Geisler, R. & Sommer, R. J. (2004): AppaDB: an AcedB database for the nematode satellite organism Pristionchus pacificus. Nucleic Acids Research, 32 (Database issue), D421-D422.

Pires da Silva, A. and Sommer, R. J. (2004): Conservation of the global sex determination gene tra-1 in distantly related nematodes. Genes Dev, 18, 1198-1208.

Kenning, Ch., Kipping, I. & Sommer, R. J. (2004): Isolation of mutations with dumpy-like phenotypes and of collagen genes in the nematode Pristionchus pacificus. Genesis, 40, 176-183.

Gutierrez, A. and Sommer, R. J. (2004): Evolution of dnmt-2 and mbd-2-like genes in the free-living nematodes Pristionchus pacificus, Caenorhabditis elegans and Caenorhabditis briggsae. Nucleic Acids Res., 21, 6388-6396.

Sommer, R. J. (2004): Evolution of nematode development – how cells and genes change their function. In: Modularity in evolution and development (Eds.: G. Schlosser and G. Wagner). Chicago University Press, Chicago, pp. 414-428.

Sommer, R. J. (2004): Beyond Darwin – towards an inclusive evolutionary synthesis. Book review. Wallace Arthur: Biased embryos and evolution. Development, 131, 5769-5770.


Pires da Silva, A. and Sommer, R. J. (2003): The evolution of signalling pathways in animal development. Nat Rev Genet, 4, 39-49.

Meinhardt, H. (2003): Complex pattern formation by a self-destabilization of established patterns: chemotactic orientation and phyllotaxis as examples. C. R. Biologies, 326, 223-237.

Gutierrez, A., Knoch, L., Witte, H. & Sommer, R. J. (2003): Functional specificity of the nematode Hox gene mab-5. Development, 130, 983-993.

Lee, K. Z., Eizinger, A., Nandakumar, R., Schuster, S. C. & Sommer, R. J. (2003): Limited microsynteny between the genomes of Pristionchus pacificus and Caenorhabditis elegans. Nucleic Acids Research, 31, 2553-2560.  

Pires da Silva, A. and Sommer, R. J. (2003): Finally, worm polycomb-like genes meet Hox regulation. Development Cell, 4, 770-772.

Meinhardt, H. (2003): Pattern forming reactions and the generation of primary embryonic axes. In: Morphogenesis and pattern formation in biological systems. (Eds.: T. Sekimura, S. Noji, N. Ueno, P. K. Maini). Springer Verlag, pp. 3-19.

Srinivasan, J., Sinz, W., Jesse, T., Wiggers-Perebolte, L., Jansen, K., Buntjer, J., van der Meulen, M. & Sommer, R. J. (2003): An integrated physical and genetic map of the nematode Pristionchus pacificus. Mol. Genet. Genomics, 269, 715-722.

Velicer, G. J. and Yu, Y. T. (2003): Evolution of novel cooperative swarming in the bacterium Myxococcus xanthus. Nature, 425, 75-78.

Velicer, G. J. (2003): Social strife in the microbial world. Trends in Microbiology, 11, 330-337.

Fiegna, F. and Velicer, G. J. (2003): Competitive fates of bacterial social parasites: persistence and self-induced extinction of Myxococcus xanthus cheaters. Proc. Biol. Sci, 270, 1527-1534.

Rudel, D. and Sommer, R. J. (2003): The evolution of developmental mechanisms. Developmental Biology, 264, 15-37 (Review).

Lee, K. Z. and Sommer, R. J. (2003): Operon structure and trans-splicing in the nematode Pristionchus pacificus. Molecular Biology and Evolution, 20 (12), 2097-2103.

Meinhardt, H. (2003): Models for pattern formation and the position-specific activation of genes. In: On growth, form and computers. (Eds.: S. Kumar and P. Bentley). Elsevier, pp. 135-155.

Sommer, R. J. (2003): Cells and genes as networks in nematode development and evolution. In: Handbook of Graphs and Networks (Eds.: S. Bornholdt, H. G. Schuster). Wiley-VHC, Weinheim, pp. 131-144.

Sommer, R. J. (2003): Genetische Analyse der Entwicklung bei Tieren. Beispiel: Caenorhabditis elegans. In: Lehrbuch der Genetik, Kapitel 26, (Ed.: W. Seyffert). Gustav Fischer Verlag, Berlin, pp. 663-668.

Sommer, R. J. & Tautz, D. (2003): Evolution von Entwicklungsprozessen. In: Lehrbuch der Genetik, Kapitel 28, (Ed.: W. Seyffert). Gustav Fischer Verlag, Berlin, pp. 723-733.

Sommer, R. J. (2003): Caenorhabditis elegans. In: Lehrbuch der Genetik, Kapitel 38, (Ed.: W. Seyffert). Gustav Fischer Verlag, Berlin, pp. 987-993.


Meinhardt, H. (2002): The radial-symmetric hydra and the evolution of the bilateral body plan: an old body became a young brain. BioEssays, 24, 185-191.

Velicer, G. J., Lenski, R. E. & Kroos, L. (2002): Rescue of social motility lost during evolution of Myxococcus xanthus in an asocial environment. Journal of Bacteriology, 184, 2719-2727.

Niehrs, C. and Meinhardt, H. (2002): Modular feedback. Nature, 417, 35-36.

Meinhardt, H. and Roth, S. (2002): Sharp peaks from shallow sources. Nature, 419, 261-262.

Srinivasan, J., Sinz, W., Lanz, C., Brand, A., Nandakumar, R., Raddatz, G., Witte, H., Keller, H., Kipping, I., Pires da Silva, A., Jesse, T., Millare, J., de Both, M., Schuster, S. C. & Sommer, R. J. (2002): A bacterial artificial chromosome-based genetic linkage map of the nematode Pristionchus pacificus. Genetics, 162, 129-134.

Velicer, G. J. and Stredwick, K. L. (2002): Experimental social evolution with Myxococcus xanthus. Antonie Van Leeuwenhoek, 81, 155-164.

Velicer, G. J., Lenski, R. E. & Kroos, L. (2002): Rescue of social motility lost during evolution of Myxococcus xanthus in an asocial environment. Journal of Bacteriology, 184, 2719-2727.

Srinivasan, J. and Sommer, R. J. (2002): From evolutionary developmental biology to genomics: towards a genome map of the free-living nematode Pristionchus pacificus. In: Genome sciences - towards a new paradigm? Uehara Memorial Foundation Symposium-2002. (Ed.: H. Yoshikawa, N. Ogasawara, N. Satoh). Elsevier Sciences. International Congress Series 1246, Amsterdam, pp. 101-110.

Sommer, R. J. (2002): C. elegans. In: Oxford Encyclopedia of Evolution, 127-129.


Sommer, R. J., Witte, H. & Schlak, I. (2001): Towards a microevolutionary approach in evolutionary developmental biology: Biogeography of the nematode genus Pristionchus (Diplogastridae). Zoology, 103, 91-98.

Meinhardt, H. (2001): Strukturbildungsprozesse: Auf- und Abbau von Mustern in der Biologie. Biologie in unserer Zeit, 31, 22-29.

Meinhardt, H. (2001): Strukturbildungsprozesse: Computersimulationen biologischer Musterbildung. Biologie in unserer Zeit, 31, 48-53.

Jungblut, B. and Sommer, R. J. (2001): The nematode even-skipped homolog vab-7 regulates gonad and vulva position in Pristionchus pacificus. Development, 128, 253-261.

Meinhardt, H. (2001): Organizer and axes formation as a self-organizing process. Int. J. Dev. Biol., 45, 177-188.

Hale, C. A., Meinhardt, H. & de Boer, P. A. (2001): Dynamic localization cycle of the cell division regulator MinEin Escherichia coli. The EMBO Journal, 20, 1563-1572.

Meinhardt, H. (2001): La belleza algorítmica de un pequeño pólipo de agua dulce, la Hidra. La Gaceta, 4, 67-75.
Grandien, K. and Sommer, R. J. (2001): Functional comparison of the nematode Hox gene lin-39 in C.elegans and P.pacificus reveals evolutionary conservation of protein function despite divergence of primary sequences. Genes & Development, 15, 2161-2172.

Featured in:
Chamberlin, H. M. (2001): The adaptable lin-39. Nature Genetics, 29, 106-107.
Casci, T. (2001): Evo-devo: Regulatory affairs. Nature Reviews Genetics, 2, 657.

Jungblut, B., Pires da Silva, A. & Sommer, R. J. (2001): Formation of the egg-laying system in Pristionchus pacificus requires complex interactions between gonadal, mesodermal and epidermal tissues and does not rely on single cell inductions. Development, 128, 3395-3404.

Sommer, R. J. (2001): As good as they get: cells in nematode vulva development and evolution. Current Opinion in Cell Biology, 13, 715-720.

Srinivasan, J., Pires da Silva, A., Gutierrez, A., Zheng, M., Jungblut, B., Witte, H., Schlak, I. & Sommer, R. J. (2001): Microevolutionary analysis of the nematode genus Pristionchussuggests a recent evolution of redundant developmental mechanisms during vulva formation. Evolution and Development, 3, 229-240.

Featured in:
Gibson, G. (2001): Developmental evolution: the unbearable likeness of beings. Current  Biology, 11 (9), R345-R348.

Meinhardt, H. and de Boer, P. A. (2001): Pattern formation in Escherichia coli: a model for the pole-to-pole oscillations of Min proteins and the localization of the division site. PNAS, 98, 14202-14207.

Meinhardt, H. (2001): Beyond spots and stripes: Generation of more complex patterns by modification and additions of the basic reaction. In: Mathematical models for biological pattern formation. (Eds.: P. K. Maini, H. G. Othmer). Springer: New York, pp. 143–165.


Sommer, R. J. (2000): Caenorhabditis elegans: Ein Wurm für alle Fälle. BIOforum, 23, 126-128.

Félix, M. A., De Ley, P., Sommer, R. J., Frisse, L., Nadler, S. A., Thomas, W. K., Vanfleteren, J., Sternberg, P. W. (2000): Evolution of vulva development in the Cephalobina (Nematoda). Developmental Biology, 221, 68-86.

Sommer, R. J. (2000): Evolution of nematode development. Current Opinion in Genetics & Development, 10, 443-448.

Meinhardt, H. (2000): Models for organizer and notochord formation. C R Acad Sci III, 323, 23-30.

Meinhardt, H. & Gierer, A. (2000): Pattern formation by local self-activation and lateral inhibition. BioEssays, 22, 753-760.

Meinhardt, H. (2000): Biological pattern formation as a complex dynamic phenomenon. In: Pattern Formation in Biology, Vision and Dynamics. (Eds.: ‪A. Carbone‬, ‪M. Gromov‬, ‪P. Prusinkiewicz)‬. World Scientific Publishing, Singapore, pp. 99-132.

Jungblut, B. and Sommer, R. J. (2000): Novel cell-cell interactions during vulva development in Pristonchus pacificus. Development, 127, 3295-3303.

Featured in:
Chamberlin, H. M. (2000): Nematode development: an evolutionary fugue. Current  Biology, 10 (17), R631-633.

Kagoshima, H., Sommer, R. J., Reinhart, B. J., Cassata, G., Ruvkun, G. & Bürglin, T. R. (2000): Graded expression of ceh-14 reporters in the hypodermis is induced by a gonadal signal. Dev. Genes. Evol., 210, 564-569.

Meinhardt, H. (2000): Patterning a chemotactic response. BioEssays, 22, 1048.

Sommer, R. J. (2000): Comparative genetics: A third model nematode species. Current Biology, 10, R879-R881.

Sommer, R. J., Carmi, I., Eizinger, A., Grandien, K., Jungblut, B., Lee, K. Z., Nguyen, H., Pires da Silva, A., Schlak, I., Sigrist, C. B. & Srinivasan, J. (2000): Pristionchus pacificus: a satellite organism in evolutionary developmental biology. Nematology, 2, 81-88.


Eizinger, A., Jungblut, B. & Sommer, R. J. (1999): Evolutionary change in the functional specificity of genes. Trends Genet., 15, 197-202.

Sigrist, C. B. and Sommer, R. J. (1999): Vulva formation in Pristionchus pacificus relies on continuous gonadal induction. Dev. Genes. Evol., 209, 451-459.

Sommer, R. J., Sigrist, C. B., Grandien, K., Jungblut, B., Eizinger, A., Adamis, H. & Schlak, I. (1999): A phylogenetic interpretation of nematode vulval variations. Invertebrate Reproduction and Development, 36, 57-65.

Félix, M. A., Hill, R. J., Schwarz, H., Sternberg, P. W., Sudhaus, W. & Sommer, R. J. (1999): Pristionchus pacificus, a nematode with only three juvenile stages, displays major heterochronic changes relative to Caenorhabditis elegans. Proc. Biol. Sci., 266, 1617-1621.

Sommer, R. J. (1999): Convergence and the interplay of evolution and development. Evolution & Development, 1(1), 8-10.