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Genomic and phenotypic evolution of nematode-infecting microsporidia
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Genomic and phenotypic evolution of nematode-infecting microsporidia
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Genomic and phenotypic evolution of nematode-infecting microsporidia
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Paper
Genomic and phenotypic evolution of nematode-infecting microsporidia
2023
Overview
Microsporidia are a large phylum of intracellular parasites that can infect most types of animals. Species in the Nematocida genus can infect nematodes including Caenorhabditis elegans, which has become an important model to study mechanisms of microsporidia infection. To understand the genomic properties and evolution of nematode-infecting microsporidia, we sequenced the genomes of nine species of microsporidia, including two genera, Enteropsectra and Pancytospora, without any previously sequenced genomes. Core cellular processes, including metabolic pathways, are mostly conserved across genera of nematode-infecting microsporidia. Each species encodes unique proteins belonging to large gene families that are likely used to interact with host cells. Most strikingly, we observed one such family, NemLGF1, is present in both Nematocida and Pancytospora species, suggesting horizontal gene transfer between species from different genera. To understand how Nematocida phenotypic traits evolved, we measured the host range, tissue specificity, spore size, and polar tube length of several species in the genus. Our phylogenetic analysis shows that Nematocida is composed of two groups of species with distinct traits and that species with longer polar tubes infect multiple tissues. Together, our work details both genomic and trait evolution between related microsporidia species and provides a useful resource for further understanding microsporidia evolution and infection mechanisms.Competing Interest StatementThe authors have declared no competing interest.Footnotes* We have made revisions to the manuscript to improve the clarity of our study. We have also added some additional analysis in figure S12.
Publisher
Cold Spring Harbor Laboratory Press,Cold Spring Harbor Laboratory
Subject
