4.8 Article

A genomic catalogue of soil microbiomes boosts mining of biodiversity and genetic resources

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NATURE COMMUNICATIONS
卷 14, 期 1, 页码 -

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NATURE PORTFOLIO
DOI: 10.1038/s41467-023-43000-z

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This study conducts a large-scale excavation of soil microbial dark matter by reconstructing metagenome-assembled genomes, uncovering unknown species-level genome bins and previously unexplored viral-host associations.
Soil harbors a vast expanse of unidentified microbes, termed as microbial dark matter, presenting an untapped reservo)ir of microbial biodiversity and genetic resources, but has yet to be fully explored. In this study, we conduct a large-scale excavation of soil microbial dark matter by reconstructing 40,039 metagenome-assembled genome bins (the SMAG catalogue) from 3304 soil metagenomes. We identify 16,530 of 21,077 species-level genome bins (SGBs) as unknown SGBs (uSGBs), which expand archaeal and bacterial diversity across the tree of life. We also illustrate the pivotal role of uSGBs in augmenting soil microbiome's functional landscape and intra-species genome diversity, providing large proportions of the 43,169 biosynthetic gene clusters and 8545 CRISPR-Cas genes. Additionally, we determine that uSGBs contributed 84.6% of previously unexplored viral-host associations from the SMAG catalogue. The SMAG catalogue provides an useful genomic resource for further studies investigating soil microbial biodiversity and genetic resources. Soil conceals a vast realm of unexplored microbes, often referred to as the microbial dark matter. This hidden universe boasts a rich tapestry of microbial and genetic biodiversity. Here, the authors introduce the SMAG catalogue, comprising of 40,039 metagenome-assembled genomes from 3304 soil metagenomes, and uncovering 21,077 species-level genome bins.

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