Formation of Rhizobium phaseoli symbiotic plasmids by genetic recombination.

Abstract:

:We report here the formation of symbiotic plasmids (pSyms), by genetic recombination between rearranged pSyms, which lack symbiotic information, and resistance plasmids carrying parts of different symbiotic plasmids (R's). This recombination was found to occur both between plasmids derived from different Rhizobium phaseoli isolates, and between plasmids derived from strains obtained from the same original isolate. We also present evidence on the formation of a functional symbiotic plasmid by recombination of an R', carrying nif and nod genes from strain CFN42, and an indigenous plasmid present in this strain (pCFN42e), which was thought to be unrelated to its symbiotic plasmid (pCFN42d). These data are discussed with respect to the stability and transfer of Rhizobium symbiotic information.

journal_name

Mol Microbiol

journal_title

Molecular microbiology

authors

Soberón-Chávez G,Nájera R,Espín G,Moreno S

doi

10.1111/j.1365-2958.1991.tb00765.x

subject

Has Abstract

pub_date

1991-04-01 00:00:00

pages

909-16

issue

4

eissn

0950-382X

issn

1365-2958

journal_volume

5

pub_type

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