1887

Abstract

Four rhizobia-like strains, isolated from root nodules of and grown in Anhui and Jiangxi Provinces of China, were grouped into the genus but were distinct from all recognized species of the genus by phylogenetic analysis of 16S rRNA and housekeeping genes. The combined sequences of the housekeeping genes , and for strain CCBAU 23252 showed 86.9 to 95 % similarity to those of known species of the genus . All four strains had and genes and could form effective nodules with and and ineffective nodules with , but did not nodulate or in cross-nodulation tests. Fatty acid composition, DNA–DNA relatedness and a series of phenotypic tests also separated these strains from members of closely related species. Based on all the evidence, we propose a novel species, sp. nov., and designate CCBAU 23252 ( = CGMCC 1.12621 = LMG 27729) as the type strain. This strain was isolated from a root nodule of and has a DNA G+C content of 61.1 mol% ( ).

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2015-09-01
2024-12-06
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