Mesorhizobium silamurunense sp nov., isolated from root nodules of Astragalus species----中国科学院微生物研究所

科研成果

论文题目:	Mesorhizobium silamurunense sp nov., isolated from root nodules of Astragalus species
作者:	Zhao, CT; Wang, ET; Zhang, YM; Chen, WF; Sui, XH; Chen, WX; Liu, HC; Zhang, XX
联系作者:	Chen, WX
刊物名称:	INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
期:
卷:	62
页:	2180-2186
年份:	2012
影响因子:	2.268
论文下载:
摘要:	Four rhizobial strains representing a previously defined novel group in the genus Mesorhizobium and isolated from Astragalus species in China were further characterized using a polyphasic approach. Phylogenetic analysis of 16S rRNA gene sequences showed that these Gram-negative bacteria belonged to the genus Mesorhizobium, with Mesorhizobium plurifarium LMG 11892(T) as the closest neighbour sharing a sequence similarity of 99.8 %. Comparative sequence analysis of the atpD, recA, glnII, rpoB, nodC and nifH genes, SDS-PAGE of whole-cell soluble proteins, DNA-DNA hybridization, fatty acid profiles and a series of phenotypic and physiological tests differentitated the novel group from all recognized species of the genus Mesorhizobium. Based on the data obtained in the present and previous studies, this group represents a novel species within the genus Mesorhizobium, for which the name Mesorhizobium silamurunense sp. nov. is proposed. The type strain is CCBAU 01550(T) (=HAMBI 3029(T)=LMG 24822(T)), and could form effective nodules on Astragalus membranaceus, Astragalus adsurgens and Caragana intermedia, and ineffective nodules on Phaseolus vulgaris in cross-nodulation tests.