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Comparative genomics of the core and accessory genomes of 48 Sinorhizobium strains comprising five genospecies

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dc.contributor.authorSugawara, Masayukien
dc.contributor.authorEpstein, Brendanen
dc.contributor.authorBadgley, Brian D.en
dc.contributor.authorUnno, Tatsuyaen
dc.contributor.authorXu, Leien
dc.contributor.authorReese, Jenniferen
dc.contributor.authorGyaneshwar, Prasaden
dc.contributor.authorDenny, Roxanneen
dc.contributor.authorMudge, Joannen
dc.contributor.authorBharti, Arvind K.en
dc.contributor.authorFarmer, Andrew D.en
dc.contributor.authorMay, Gregory D.en
dc.contributor.authorWoodward, Jimmy E.en
dc.contributor.authorMédigue, Claudineen
dc.contributor.authorVallenet, Daviden
dc.contributor.authorLajus, Aurélieen
dc.contributor.authorRouy, Zoéen
dc.contributor.authorMartinez-Vaz, Betsyen
dc.contributor.authorTiffin, Peteren
dc.contributor.authorYoung, Nevin D.en
dc.contributor.authorSadowsky, Michael J.en
dc.contributor.departmentSchool of Plant and Environmental Sciencesen
dc.date.accessioned2013-06-26T11:04:24Zen
dc.date.available2013-06-26T11:04:24Zen
dc.date.issued2013-02-20en
dc.date.updated2013-06-26T11:04:24Zen
dc.description.abstractBackground The sinorhizobia are amongst the most well studied members of nitrogen-fixing root nodule bacteria and contribute substantial amounts of fixed nitrogen to the biosphere. While the alfalfa symbiont Sinorhizobium meliloti RM 1021 was one of the first rhizobial strains to be completely sequenced, little information is available about the genomes of this large and diverse species group. Results Here we report the draft assembly and annotation of 48 strains of Sinorhizobium comprising five genospecies. While S. meliloti and S. medicae are taxonomically related, they displayed different nodulation patterns on diverse Medicago host plants, and have differences in gene content, including those involved in conjugation and organic sulfur utilization. Genes involved in Nod factor and polysaccharide biosynthesis, denitrification and type III, IV, and VI secretion systems also vary within and between species. Symbiotic phenotyping and mutational analyses indicated that some type IV secretion genes are symbiosis-related and involved in nitrogen fixation efficiency. Moreover, there is a correlation between the presence of type IV secretion systems, heme biosynthesis and microaerobic denitrification genes, and symbiotic efficiency. Conclusions Our results suggest that each Sinorhizobium strain uses a slightly different strategy to obtain maximum compatibility with a host plant. This large genome data set provides useful information to better understand the functional features of five Sinorhizobium species, especially compatibility in legume-Sinorhizobium interactions. The diversity of genes present in the accessory genomes of members of this genus indicates that each bacterium has adopted slightly different strategies to interact with diverse plant genera and soil environments.en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationGenome Biology. 2013 Feb 20;14(2):R17en
dc.identifier.doihttps://doi.org/10.1186/gb-2013-14-2-r17en
dc.identifier.urihttp://hdl.handle.net/10919/23271en
dc.language.isoenen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.holderMasayuki Sugawara et al.; licensee BioMed Central Ltd.en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titleComparative genomics of the core and accessory genomes of 48 Sinorhizobium strains comprising five genospeciesen
dc.title.serialGenome Biologyen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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