ENHANCED COMPETITIVENESS FOR NODULATION OF MEDICAGO-SATIVA BY RHIZOBIUM-MELILOTI TRANSCONJUGANTS HARBORING THE ROOT-INDUCING PLASMIDS OF AGROBACTERIUM-RHIZOGENES STRAIN-15834

Authors
NOVIKOVA NI PAVLOVA EA
Citation
Ni. Novikova et Ea. Pavlova, ENHANCED COMPETITIVENESS FOR NODULATION OF MEDICAGO-SATIVA BY RHIZOBIUM-MELILOTI TRANSCONJUGANTS HARBORING THE ROOT-INDUCING PLASMIDS OF AGROBACTERIUM-RHIZOGENES STRAIN-15834, FEMS microbiology, ecology, 12(1), 1993, pp. 61-68
Citations number
30
Categorie Soggetti
Microbiology
Journal title
FEMS microbiology, ecology → ACNP
ISSN journal
01686496
Volume
12
Issue
1
Year of publication
1993
Pages
61 - 68
Database
ISI
SICI code
0168-6496(1993)12:1<61:ECFNOM>2.0.ZU;2-T
Abstract
The root-inducing plasmid of Agrobacterium rhizogenes strain 15834 mar ked with transposon Tn5-mob RP4-4 with a helper plasmid was mobilized into nitrogen-fixing Rhizobium meliloti strain CIAM 1759. The resultin g transconjugants did not induce 'hairy' root syndrome but developed n itrogen-fixing nodules on alfalfa. Among the 9 transconjugants tested, 6 strains had increased modulation rates. The competitiveness of 2 of these R. meliloti (pRi) strains was significantly enhanced as compare d with the parent strain CIAM 1759; this was confirmed both in tube an d in pot tests.