TRANSFER OF CLOVER INFECTIVITY OF RHIZOBIUM TRIFOLII TO RHIZOBIUM PHASEOLI AS MEDIATED BY AN EPISOMIC FACTOR
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چکیده
منابع مشابه
Mutant strains of clover rhizobium (Rhizobium trifolii) that form nodules on soybean (Glycine max).
Mutant strains of Rhizobium trifolii that induce nitrogenase activity in the free-living state were isolated. These strains, unlike the wild type, nodulated soybean and mungbean plants, producing effective nodules. One of the strains, strain DT72, also nodulated clover but the nodules were ineffective. Strain DT125 consumed hydrogen gas from the gas phase, which can be coupled to nitrogenase ac...
متن کاملRhizobium attachment to clover roots.
The adhesion of rhizobia to surfaces of clover roots was examined by an indirect plate-counting assay and phase-contrast microscopy. The number of Rhizobium trifolii cells attached to clover root segments increased in approximately linear fashion during the first hour of incubation, but did not change appreciably thereafter. The addition of 30 mM-2-deoxy-D-glucose, which effectively inhibits bi...
متن کاملGenome sequence of the clover-nodulating Rhizobium leguminosarum bv. trifolii strain SRDI943.
Rhizobium leguminosarum bv. trifolii SRDI943 (strain syn. V2-2) is an aerobic, motile, Gram-negative, non-spore-forming rod that was isolated from a root nodule of Trifolium michelianum Savi cv. Paradana that had been grown in soil collected from a mixed pasture in Victoria, Australia. This isolate was found to have a broad clover host range but was sub-optimal for nitrogen fixation with T. sub...
متن کاملGenome sequence of the clover symbiont Rhizobium leguminosarum bv. trifolii strain CC275e
Rhizobium leguminosarum bv. trifolii strain CC275e is a highly effective, N2-fixing microsymbiont of white clover (Trifolium repens L.). The bacterium has been widely used in both Australia and New Zealand as a clover seed inoculant and, as such, has delivered the equivalent of millions of dollars of nitrogen into these pastoral systems. R. leguminosarum strain CC275e is a rod-shaped, motile, G...
متن کاملNew Rhizobium leguminosarum bv. trifolii isolates: Evaluation of competitiveness for clover nodule occupancy
An interrelationship between introduced and indigenous rhizobia focused on their competitiveness in nodulation was evaluated in a soil pot experiment. Clover seeds were inoculated by six different gradual concentrations of inoculum of two effective Rhizobium leguminosarum bv. trifolii isolates (inoculation strains 1/2 and 14/2). At the beginning of flowering, clover plants were removed from the...
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ژورنال
عنوان ژورنال: The Journal of General and Applied Microbiology
سال: 1967
ISSN: 1349-8037,0022-1260
DOI: 10.2323/jgam.13.391