Medicago sativa L. is one of the most important perennial forage crops and has been cultivated for more than 2,000 years in China. A previously unreported sprout wilt disease of M. sativa, affecting as much as 25% of the seedlings, was observed in northwest China (Gansu Province) in March 2011.
Two Gram-negative, aerobic, non-motile, rod-shaped bacterial strains, FH13T and FH23, representing a novel group of Rhizobium isolated from root nodules of Phaseolus vulgaris in Mexico, were studied by a polyphasic analysis. Phylogeny of 16S rRNA gene sequences revealed them to be members of the
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