Diversification of Sinorhizobium populations associated with Medicago polymorpha and Medicago lupulina in purple soil of China.

ABSTRACT: The double selection of environment adaptation and host specificity forced the diversification of rhizobia in nature. In the tropical region of China, Medicago polymorpha and Medicago lupulina are widely distributed, particularly in purple soil. However, the local distribution and diversity of rhizobia associated with these legumes has not been systematically investigated. To this end, root nodules of M. polymorpha and M. lupulina grown in purple soil at seven locations in Yunnan Province of China were collected for rhizobial isolation. The obtained rhizobia were characterized by RFLP of 16S-23S rRNA intergenic spacer, BOXAIR fingerprinting, and phylogeny of housekeeping and symbiosis genes. As result, a total of 91 rhizobial strains were classified into species

SUBMITTER: Tang M 

PROVIDER: S-EPMC9846747 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature