Phylogenetic and genetic relationships of Mesorhizobium tianshanense and related rhizobia

Zhi Yuan Tan, Xiao Dong Xu, E. N.Tao Wang, Jun Lian Gao, Esperanza Martinez-Romero, Wen Xin Chen

Research output: Contribution to journalArticlepeer-review

158 Scopus citations

Abstract

The genetic and phylogenetic relationships for strains of Mesorhizobium tianshanense and its relatives were compared by an analysis of the results of sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) of whole-cell proteins, DNA-DNA hybridization, and full 16S rRNA gene sequencing. The strains of M. tianshanense formed a cluster which was distinct from those of other rhizobium species in the clustering analysis of SDS-PAGE. DNA-DNA relatedness between A-1BS (type strain of M. tianshanense) and the type or reference strains for Mesorhizobium loti, M. huakuii, M. ciceri, M. mediterraneum, and cluster U, an unnamed rhizobial group, ranged from 4.4 to 43.8%. The phylogenetic analysis based on the 16S rRNA gene sequences showed that M. tianshanense was closely related to the Mesorhizobium phylogenetic branch and could be distinguished from the other four species in this branch. These results further confirmed that these bacteria constitute a distinct rhizobial species.

Original languageEnglish
Pages (from-to)874-879
Number of pages6
JournalInternational Journal of Systematic Bacteriology
Volume47
Issue number3
DOIs
StatePublished - Jul 1997
Externally publishedYes

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