Unravelling the genomic and environmental diversity of the ubiquitous Solirubrobacter,Environmental Microbiology

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Unravelling the genomic and environmental diversity of the ubiquitous Solirubrobacter
Environmental Microbiology ( IF 4.3 ) Pub Date : 2024-08-15 , DOI: 10.1111/1462-2920.16685
Angélica Jara-Servin _{1,

2} , Gerardo Mejia _{1,

2} , Miguel F Romero ₃ , Mariana Peimbert ₄ , Luis David Alcaraz ₁

Affiliation

Solirubrobacter, though widespread in soils and rhizospheres, has been relatively unexplored despite its ubiquity. Previously acknowledged as a common soil bacterium, our research explores its phylogenomics, pangenomics, environmental diversity, and interactions within bacterial communities. By analysing seven genomic sequences, we have identified a pangenome consisting of 19,645 protein families, of which 2644 are shared across all studied genomes, forming the core genome. Interestingly, despite the non‐motility of reported isolates, we discovered genes for flagellin and a partial flagellum assembly pathway. Examining the 16S ribosomal RNA genes of Solirubrobacter revealed substantial diversity, with 3166 operational taxonomic units identified in Mexican soils. Co‐occurrence network analysis further demonstrated its significant integration within bacterial communities. Through phylogenomic scrutiny, we conclusively excluded the NCBI's GCA_009993245.1 genome from being classified as a Solirubrobacter. Our research into the metagenomic diversity of Solirubrobacter across various environments confirmed its presence in rhizospheres and certain soils, underscoring its adaptability. The geographical ubiquity of Solirubrobacter in rhizospheres raises intriguing questions regarding its potential interactions with plant hosts and the biotic and abiotic factors influencing its presence in soil. Given its ecological significance and genetic diversity, Solirubrobacter warrants further investigation as a potentially crucial yet underappreciated keystone species.

更新日期：2024-08-15

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