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To investigate the community composition and biogeography of soybean rhizobia in Xinjiang, a total of 151 strains were investigated with RFLP and phylogenetic analyses of 16S rRNA gene, 16S–23S intergenic spacer, three housekeeping genes (atpD, glnII and recA), and two symbiotic genes (nifH and nodC), as well as cross-nodulation. Two rhizobial species, Bradyrhizobium liaoningense and Sinorhizobium fredii...
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