Mesorhizobium alhagi sp. nov., isolated from wild Alhagi sparsifolia in north-western China

Author:

Chen Wei-Min12,Zhu Wen-Fei2,Bontemps Cyril1,Young J. Peter W.1,Wei Ge Hong2

Affiliation:

1. Department of Biology, University of York, PO Box 373, York YO10 5YW, UK

2. College of Life Sciences, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Northwest A & F University, Yangling Shaanxi 712100, PR China

Abstract

Eleven strains that formed symbiotic root nodules on Alhagi sparsifolia, designated previously as genospecies II, were identified as a new lineage of Mesorhizobium (Alphaproteobacteria) that could be differentiated from all previously recognized species of the genus Mesorhizobium by using 16S rRNA gene sequences (<97.8 % similarity), DNA–DNA hybridization (<45 %), dnaJ, dnaK, recA, glnA, nifH, nodA and nodC gene sequences, fatty acid profiles (C18 : 1 ω7c, 35 %;11-methyl C18 : 1 ω7c, 30 %) and numerical taxonomy. These strains are therefore considered to represent a novel species, for which the name Mesorhizobium alhagi sp. nov. is proposed, with isolate CCNWXJ12-2T (=ACCC 15461T=HAMBI 3019T) as the type strain.

Publisher

Microbiology Society

Subject

General Medicine,Ecology, Evolution, Behavior and Systematics,Microbiology

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