Abstract:
:Cowpea (Vigna unguiculata) and mung bean (Vigna radiata) are important legume crops yet their rhizobia have not been well characterized. In the present study, 62 rhizobial strains isolated from the root nodules of these plants grown in the subtropical region of China were analyzed via a polyphasic approach. The results showed that 90% of the analyzed strains belonged to or were related to Bradyrhizobium japonicum, Bradyrhizobium liaoningense, Bradyrhizobium yuanmingense and Bradyrhizobium elkanii, while the remaining represented Rhizobium leguminosarum, Rhizobium etli and Sinorhizobium fredii. Diverse nifH and nodC genes were found in these strains and their symbiotic genes were mainly coevolved with the housekeeping genes, indicating that the symbiotic genes were mainly maintained by vertical transfer in the studied rhizobial populations.
journal_name
FEMS Microbiol Lettjournal_title
FEMS microbiology lettersauthors
Zhang YF,Wang ET,Tian CF,Wang FQ,Han LL,Chen WF,Chen WXdoi
10.1111/j.1574-6968.2008.01169.xsubject
Has Abstractpub_date
2008-08-01 00:00:00pages
146-54issue
2eissn
0378-1097issn
1574-6968pii
FML1169journal_volume
285pub_type
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