Conservation of Plasmid-Encoded Traits among Bean-Nodulating Rhizobium Species
- 1 May 2002
- journal article
- Published by American Society for Microbiology in Applied and Environmental Microbiology
- Vol. 68 (5) , 2555-61
- https://doi.org/10.1128/aem.68.5.2555-2561.2002
Abstract
Rhizobium etli type strain CFN42 contains six plasmids. We analyzed the distribution of genetic markers from some of these plasmids in bean-nodulating strains belonging to different species ( Rhizobium etli , Rhizobium gallicum , Rhizobium giardinii , Rhizobium leguminosarum , and Sinorhizobium fredii ). Our results indicate that independent of geographic origin, R. etli strains usually share not only the pSym plasmid but also other plasmids containing symbiosis-related genes, with a similar organization. In contrast, strains belonging to other bean-nodulating species seem to have acquired only the pSym plasmid from R. etli .Keywords
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