生物
遗传学
细菌
微生物学
细菌遗传学
基因
大肠杆菌
作者
Jana Ordon,Julien Thouin,Ryohei Thomas Nakano,Ka‐Wai Ma,Pengfan Zhang,Bruno Huettel,Ruben Garrido‐Oter,Paul Schulze‐Lefert
出处
期刊:Nature microbiology
日期:2024-03-19
标识
DOI:10.1038/s41564-024-01619-8
摘要
Abstract DNA-amplicon-based microbiota profiling can estimate species diversity and abundance but cannot resolve genetic differences within individuals of the same species. Here we report the development of modular bacterial tags (MoBacTags) encoding DNA barcodes that enable tracking of near-isogenic bacterial commensals in an array of complex microbiome communities. Chromosomally integrated DNA barcodes are then co-amplified with endogenous marker genes of the community by integrating corresponding primer binding sites into the barcode. We use this approach to assess the contributions of individual bacterial genes to Arabidopsis thaliana root microbiota establishment with synthetic communities that include MoBacTag-labelled strains of Pseudomonas capeferrum . Results show reduced root colonization for certain mutant strains with defects in gluconic-acid-mediated host immunosuppression, which would not be detected with traditional amplicon sequencing. Our work illustrates how MoBacTags can be applied to assess scaling of individual bacterial genetic determinants in the plant microbiota.
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