NDLI: Mesorhizobium muleiense and Mesorhizobium gsp. nov. are symbionts of Cicer arietinum L. in alkaline soils of Gansu, Northwest China

Content Provider	Springer Nature Link
Author	Zhang, Junjie Yang, Xu Guo, Chen Lajudie, Philippe Singh, Raghvendra Pratap Wang, Entao Chen, Wenfeng
Copyright Year	2016
Abstract	To describe the chickpea rhizobial diversity in Gansu Province of China, so far uninvestigated.Nodule bacteria were isolated from chickpea grown in Gansu and characterized by phylogenetic analysis of 16S rRNA gene, housekeeping genes (atpD, recA, and glnII), and symbiotic genes (nodC and nifH). The genetic differentiation and gene flow among the chickpea microsymbionts were estimated and considered in view of soil characteristics.A total of nineteen new isolates originating from alkaline-saline (pH 7.9–8.1) soils in Gansu formed two clades by housekeeping gene analyses; clade I (16 isolates) was identified as Mesorhizobium muleiense (97.7–98.7 % of similarities with the type strain CCBAU 83963$^{T}$) and clade II (3 isolates) formed a separate group within Mesorhizobium branch, displaying 97.0 and 96.6 % similarities with the most related type strains M. temperatum SDW 018$^{T}$ and M. muleiense CCBAU 83963$^{T}$, respectively. Their symbiotic genes (nodC and nifH) were highly similar (>98.0 %) with those described for chickpea microsymbionts in literature, i.e., M. muleiense, M. ciceri, and M. mediterraneum. The genetic differentiation and gene flow between the chickpea rhizobial groups supported our conclusions for species affiliation. M. muleiense and a novel Mesorhizobium genospecies, sharing similar symbiotic genes, are distributed in the alkaline-saline soils of Gansu and may be considered as the main and specific chickpea symbionts in the Northwest of China.
Starting Page	103
Ending Page	112
Page Count	10
File Format	PDF
ISSN	0032079X
Journal	Plant and Soil
Volume Number	410
Issue Number	1-2
e-ISSN	15735036
Language	English
Publisher	Springer International Publishing
Publisher Date	2016-07-16
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Mesorhizobium muleiense Cicer arietinum L Symbiotic genes Alkaline soils China Plant Sciences Soil Science & Conservation Plant Physiology Ecology
Content Type	Text
Resource Type	Article
Subject	Soil Science Plant Science

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