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Large-scale diversification without genetic isolation in nematode symbionts of figs
TLDR
A remarkable case of macroevolutionary-scale diversification without genetic divergence in fig-associated nematodes is reported, showing that rapid filling of potential ecological niches is possible without diversifying selection on genotypes.
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Chromatin remodelling and antisense-mediated up-regulation of the developmental switch gene eud-1 control predatory feeding plasticity
TLDR
Ch chromatin remodelling and antisense-mediated up-regulation of eud-1 control feeding plasticity in Pristionchus.
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Extracellular proteostasis prevents aggregation during pathogenic attack
TLDR
It is proposed that enhanced extracellular proteostasis contributes to systemic host defence by maintaining a functional secreted proteome and avoiding proteotoxicity in Caenorhabditis elegans.
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A Developmental Switch Generating Phenotypic Plasticity Is Part of a Conserved Multi-gene Locus.
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Phylotranscriptomics of Pristionchus Nematodes Reveals Parallel Gene Loss in Six Hermaphroditic Lineages
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Bacterial vitamin B12 production enhances nematode predatory behavior
TLDR
It is demonstrated that production of vitamin B12 by host-associated microbiota can affect complex host behaviors, and new connections between animal diet, microbiota, and nervous system are revealed.
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HAIRY-like Transcription Factors and the Evolution of the Nematode Vulva Equivalence Group
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Three new species of Pristionchus (Nematoda: Diplogastridae) show morphological divergence through evolutionary intermediates of a novel feeding‐structure polymorphism
TLDR
Three new species are described, characterized by a novel polymorphism in their mouthparts, which show the canonical mouth dimorphism of diplogastrid nematodes and provide further insight into the evolution of polymorphisms and their evolutionary intermediates.
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Life History Responses and Gene Expression Profiles of the Nematode Pristionchus pacificus Cultured on Cryptococcus Yeasts
TLDR
Two Cryptococcus strains are established as alternative food source for P. pacificus and shows change in various developmental, physiological and morphological traits, including the transcriptomic profiles.
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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
TLDR
Two new species of Pristionchus are described, P. maxplancki and P. quartusdecimus, which were isolated from beetles in Japan, supporting the hypothesis that a region including Japan is the origin of diversification of the P. pacificus species complex.
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