Biology of Rhizobium trifolii Bearing the Hairy Root Plasmid
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چکیده
منابع مشابه
Root Hair Deformations Associated with Fractionated Extracts from Rhizobium trifolii.
Components from culture fluid and whole cells of Rhizobium trifolii were examined for effects on root hair morphology of white clover seedlings (Trifolium repens var. Ladino). Cell-free culture fluid, exopolysaccharides, supernatant fluid from the precipitation of the exopolysaccharides, capsular polysaccharides, lipopolysaccharides, and a protein fraction from culture fluids were assayed for m...
متن کاملTransposon mediation allows a symbiotic plasmid of Rhizobium leguminosarum bv. trifolii to become a symbiosis island in Agrobacterium and Rhizobium.
The symbiotic plasmid (pSym) of Rhizobium leguminosarum bv. trifolii 4S5, which carries Tn5-mob, was successfully transferred into Agrobacterium tumefaciens A136 by using a conjugation method. The resulting transconjugants induced the development of ineffective nitrogen-fixing nodules on the roots of white clover seedlings. Depending on the manner in which the pSym was retained, the transconjug...
متن کاملStudies on the Aspartic Acid Decarboxylase of Rhizobium Trifolii.
Virtanen and Laine (1937) were the first to suggest the existence of an aspartic acid decarboxylase in Rhizobium trifolii, by the isolation of beta-alanine from a 47-day fermentation mash containing aspartic acid. Shive and Macow (1946), working with hydroxyaspartic acid as a competitive analogue for aspartic acid in the metabolism of Escherichia coli, found that the addition of this compound t...
متن کاملPlasmid replicons of Rhizobium.
Rhizobium spp. are found in soil. They are both free-living and found symbiotically associated with the nodules of leguminous plants. Traditionally, studies have focused on the association of these organisms with plants in nitrogen-fixing nodules, since this is regarded as the most important role of these bacteria in the environment. Rhizobium sp. are known to possess several replicons. Some, l...
متن کاملInterstrain Competition between Representatives of Indigenous Serotypes of Rhizobium trifolii.
The symbiotic characteristics of Rhizobium trifolii strains 1-01 and 2-01 were evaluated both individually and in various combinations on two cultivars (Mt. Barker and Woogenellup) of subterranean clover (Trifolium subterraneum L.). Nodules were observed on day 8 independent of cultivar or strain. Cultivar differences were measured in nodulating efficiency by 1-01 since 54% of the primary nodul...
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ژورنال
عنوان ژورنال: Microbiology
سال: 1986
ISSN: 1350-0872,1465-2080
DOI: 10.1099/00221287-132-3-653