Dataset Information

Complete Genome Sequence of Bradyrhizobium sp. ORS285, a Photosynthetic Strain Able To Establish Nod Factor-Dependent or Nod Factor-Independent Symbiosis with Aeschynomene Legumes.

ABSTRACT: Here, we report the complete genome sequence of Bradyrhizobium sp. strain ORS285, which is able to nodulate Aeschynomene legumes using two distinct strategies that differ in the requirement of Nod factors. The genome sequence information of this strain will help understanding of the different mechanisms of interaction of rhizobia with legumes.

SUBMITTER: Gully D

PROVIDER: S-EPMC5532818 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature

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Publications

Complete Genome Sequence of Bradyrhizobium sp. ORS285, a Photosynthetic Strain Able To Establish Nod Factor-Dependent or Nod Factor-Independent Symbiosis with Aeschynomene Legumes.

Gully Djamel D Teulet Albin A Busset Nicolas N Nouwen Nico N Fardoux Joël J Rouy Zoe Z Vallenet David D Cruveiller Stéphane S Giraud Eric E

Genome announcements 20170727 30

Here, we report the complete genome sequence of Bradyrhizobium sp. strain ORS285, which is able to nodulate Aeschynomene legumes using two distinct strategies that differ in the requirement of Nod factors. The genome sequence information of this strain will help understanding of the different mechanisms of interaction of rhizobia with legumes. ...[more]

PMID: 28751380

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Project description:Six bacterial strains isolated from root nodules of soybean plants that had been inoculated with root-zone soil of legumes native to Canada were previously characterized and 1) placed in two novel lineages within the genus Bradyrhizobium and 2) assigned to symbiovar septentrionale. Here we verified the taxonomic status of these strains using genomic and phenotypic analyses. Phylogenetic analyses of five protein encoding partial gene sequences as well as 52 full length ribosome protein subunit gene sequences confirmed placement of the novel strains in two highly supported lineages distinct from named Bradyrhizobium species. The highest average nucleotide identity values of strains representing these two lineages relative to type strains of closest relatives were 90.7 and 92.3% which is well below the threshold value for bacterial species circumscription. The genomes of representative strains 1S1T, 162S2 and 66S1MBT have sizes of 10598256, 10733150 and 9032145 bp with DNA G+C contents of 63.5, 63.4 and 63.8 mol%, respectively. These strains possess between one and three plasmids based on copy number of plasmid replication and segregation (repABC) genes. Novel strains also possess numerous insertion sequences, and, relative to reference strain Bradyrhizobium diazoefficiens USDA110T, exhibit inversion and fragmentation of nodulation (nod) and nitrogen-fixation (nif) gene clusters. Phylogenetic analyses of nodC and nifH gene sequences confirmed placement of novel strains in a distinct lineage corresponding to symbiovar septentrionale. Data for morphological, physiological and symbiotic characteristics complement the sequence-based results. The data presented here support the description of two new species for which the names Bradyrhizobium septentrionale sp. nov. (sv. septentrionale) and Bradyrhizobium quebecense sp. nov. (sv. septentrionale) are proposed, with 1S1T (=LMG 29930T=HAMBI 3676T) and 66S1MBT (=LMG 31547T=HAMBI 3720T) as type strains, respectively.

Dataset Information

Complete Genome Sequence of Bradyrhizobium sp. ORS285, a Photosynthetic Strain Able To Establish Nod Factor-Dependent or Nod Factor-Independent Symbiosis with Aeschynomene Legumes.

Publications

Complete Genome Sequence of <i>Bradyrhizobium</i> sp. ORS285, a Photosynthetic Strain Able To Establish Nod Factor-Dependent or Nod Factor-Independent Symbiosis with <i>Aeschynomene</i> Legumes.

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