Strain 10.2.2T was isolated from a root nodule of a Lotus corniculatus plant growing near Skammestein (Norway). Phenotypic and chemotaxonomic characterization revealed that colonies grown on yeast–mannitol broth agar were circular, convex and slimy. Growth occurred at 28 °C in 0–1 % NaCl and in a pH range from above 4 to 10. Cells were resistant to kanamycin and phosphomycin. They could assimilate carbon sources such as l-lysine, d-mannose, d-mannitol, and l-alanine. Major fatty acids found in the organism were 11-methyl C18 : 1ω7c, C16 : 0, C18 : 1ω7c, C18 : 0 and C19 : 0 cyclo ω8c. Genome sequencing and characterization of the genome revealed its size to be 8.27 Mbp with a G+C content of 62.4 mol%. Phylogenetic analyses based on the 16S rRNA gene and housekeeping gene alignments placed this strain within the genus Mesorhizobium. Pairwise genome-wide average nucleotide identity values supported that strain 10.2.2T represents a new species, for which we propose the name Mesorhizobium norvegicum sp. nov. with the type strain 10.2.2T (=DSM 108834T=LMG 31153T).
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