show Abstracthide AbstractHere we introduce CeMbio, a simplified natural Caenorhabditis elegans microbiota derived from our meta-analysis of the natural microbiome of this nematode. The CeMbio resource is amenable to all strengths of the C. elegans model system, strains included are readily culturable, they all colonize the worm gut individually, and comprise a robust community that distinctly affects nematode life-history. This BioProject includes all information related to the single bacteria genome assembly and sequencing.