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The diversity and symbiotic effectiveness of rhizobia isolated from root nodules of native American acacia Vachellia macracantha (formerly Acacia macracantha) grown in soils from different locations in Peru was investigated. Thirteen bacterial isolates were characterized by RFLP analysis of the IGS region, and sequencing and phylogenetic analyses of the 16S rRNA and the symbiotic nodC and nifH genes...
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