Hongxia Zhang

Chinese Academy of Agricultural Sciences, Beijing, Beijing Shi, China

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    ABSTRACT: We investigated the genetic diversity and phylogeny of soybean rhizobia isolated from the regions of Loess Plateau in China. We analyzed 130 soybean rhizobia isolated from 15 regions in 4 provinces of Loess Plateau through BOX-PCR, 16S rDNA PCR- RFLP, 16S-23S IGS PCR-RFLP and 16S rRNA gene sequencing. BOX-PCR, 16S rDNA PCR- RFLP and 16S-23S IGS PCR-RFLP were in good agreement with the results which showed that all strains tested ascribed to two groups: the genus of Sinorhizobium and Bradyrhizobium phylogenetically. The analysis of 16S rRNA gene of 5 representative strains indicated that they were related to type strains S. fredii, B. japonicum and B. liaoningense, homology coefficient with type strains was 100% respectively. Soybean rhizobia isolated from the regions of Loess Plateau in China showed rich genetic diversity. S. fredii was the dominant species. Bradyrhizobium accounted for 10% of the strains tested only, of which, two strains were B. liaoningense.
    ACTA MICROBIOLOGICA SINICA 11/2010; 50(11):1466-73.

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  • 2010
    • Chinese Academy of Agricultural Sciences
      • Institute of Agricultural Resources and Regional Planning
      Beijing, Beijing Shi, China