Taxonomically significant group antigens in Rhizobium.
J. M. Vincent,Beverley Humphrey +1 more
TLDR
Earlier studies of the antigenic determinants of Rhizobium were almost entirely concerned with agglutinogens and revealed considerable strain specificity, the recognition of which was enhanced by a distinction between flagellar and somatic antigens.Abstract:
SUMMARY: Earlier studies of the antigenic determinants of Rhizobium were almost entirely concerned with agglutinogens and revealed considerable strain specificity, the recognition of which was enhanced by a distinction between flagellar and somatic antigens (Bushnell & Sarles, 1939; Vincent, 1941, 1942; Kleczkowski & Thornton, 1944; Purchase, Vincent & Ward, 1951; Means, Johnson & Date, 1964). In some cases this specificity depended on complex patterns of shared antigens, in others on complete non-cross reactivity between strains that belonged to the same species. Agglutination could not therefore be depended on for the recognition of species or groups of species of rhizobia. On the other hand, the technique has proved valuable for the definition of serotypes and the labelling of strains used for experimental purposes.read more
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NOTES: Transfer of Rhizobium japonicum Buchanan 1980 to Bradyrhizobium gen. nov., a Genus of Slow-Growing, Root Nodule Bacteria from Leguminous Plants
TL;DR: The slow-growing, non-acid-producing root nodule bacteria of leguminous plants should be separated from the fast- growing, acid-producing strains and placed in a new genus, and the name proposed is Bradyrhizobium.
Journal ArticleDOI
Isolation and characterization of plant growth-promoting rhizobacteria from wheat rhizosphere and their effect on plant growth promotion.
TL;DR: The study indicates the potential of these PGPR for inoculums production or biofertilizers for enhancing growth and nutrient content of wheat and other crops under field conditions.
Journal ArticleDOI
Proposed Minimal Standards for the Description of New Genera and Species of Root- and Stem-Nodulating Bacteria
Peter Graham,Michael J. Sadowsky,Harold H. Keyser,Y. M. Barnet,R. S. Bradley,J. E. Cooper,D. J. De Ley,B. D. W. Jarvis,E. B. Roslycky,B. W. Strijdom,J. P. W. Young +10 more
TL;DR: The current status of “Rhizobium” taxonomy is reviewed and minimal standards for the description of future genera and species belonging to this group of organisms are proposed.
Journal ArticleDOI
Isolation and Identification of Plant Growth Promoting Rhizobacteria from Cucumber Rhizosphere and Their Effect on Plant Growth Promotion and Disease Suppression.
TL;DR: Cucumber plants grown from seeds that were treated with these PGPR strains displayed significantly higher levels of germination, seedling vigour, growth, and N content in root and shoot tissue compared to non-treated control plants, indicating their ability to suppress Phytophthora crown rot in cucumber.
Journal ArticleDOI
Rhizobium loti, a New Species of Legume Root Nodule Bacteria
TL;DR: Comparative studies of fast-growing Lotus rhizobia were reviewed, and a new species, Rhizobium loti, is proposed because plant specificity, phage relationships, the solubleprotein pattern, and deoxyribonucleic acid base sequence homology distinguished R. loti from currently recognized RhizOBium species.
References
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The Application of Computer Techniques to the Taxonomy of the Root-nodule Bacteria of Legumes
TL;DR: The results obtained for the genus Rhizobium indicate the need for major taxonomic changes and the creation of a new genus Phytomyxa to contain strains of slow-growing root-nodule bacteria is also proposed.
Journal ArticleDOI
Deoxyribonucleic Acid Homology and Taxonomy of Agrobacterium, Rhizobium, and Chromobacterium
TL;DR: Hybridization experiments were carried out between high molecular weight, denatured, agar-embedded deoxyribonucleic acid (DNA) and homologous, nonembedded, sheared, Denatured 14C-labeled DNA from a strain of Agrobacterium tumefaciens and Rhizobium leguminosarum (the reference strains) in the presence of shearing, non embedded, non labeled DNA (competing DNA)
Journal ArticleDOI
Host Specificity In The Root Hair "Curling Factor" of Rhizobium Spp.
Phaik Y Yao,J. M. Vincent +1 more
TL;DR: Cultures revealed a specific relationship between bacteria and host that determined the kind and degree of deformation of the root hairs.
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Adansonian Analysis of the Rhizobiaceae
Melda L. Moffett,Rita R. Colwell +1 more
TL;DR: From the results obtained here, the genera Rhizobium and Phytomyxa appear more closely related to the members of the Pseudomonadaceae.
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