Simple sequence repeats and compositional bias in the bipartite Ralstonia solanacearum GMI1000 genome.

ABSTRACT: BACKGROUND:Ralstonia solanacearum is an important plant pathogen. The genome of R. solananearum GMI1000 is organised into two replicons (a 3.7-Mb chromosome and a 2.1-Mb megaplasmid) and this bipartite genome structure is characteristic for most R. solanacearum strains. To determine whether the megaplasmid was acquired via recent horizontal gene transfer or is part of an ancestral single chromosome, we compared the abundance, distribution and composition of simple sequence repeats (SSRs) between both replicons and also compared the respective compositional biases. RESULTS:Our data show that both replicons are very similar in respect to distribution and composition of SSRs and presence of compositional biases. Minor variations in SSR and compositional biases observed may be attributable to

SUBMITTER: Coenye T 

PROVIDER: S-EPMC153513 | biostudies-literature | 2003 Mar

REPOSITORIES: biostudies-literature