Intragenomic diversity of Rhizobium leguminosarum bv. trifolii clover nodule isolates.

ABSTRACT:

Background

Soil bacteria from the genus Rhizobium are characterized by a complex genomic architecture comprising chromosome and large plasmids. Genes responsible for symbiotic interactions with legumes are usually located on one of the plasmids, named the symbiotic plasmid (pSym). The plasmids have a great impact not only on the metabolic potential of rhizobia but also underlie genome rearrangements and plasticity.

Results

Here, we analyzed the distribution and sequence variability of markers located on chromosomes and extrachromosomal replicons of Rhizobium leguminosarum bv. trifolii strains originating from nodules of clover grown in the same site in cultivated soil. First, on the basis of sequence similarity of repA and repC replication genes to the respective counterpart

SUBMITTER: Mazur A 

PROVIDER: S-EPMC3123555 | biostudies-literature | 2011 May

REPOSITORIES: biostudies-literature