DNA Homologies between Rhizobium fredii, Rhizobia That Nodulate Galega sp., and Other Rhizobium and Bradyrhizobium Species
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Serological Relatedness of Rhizobium fredii to Other Rhizobia and to the Bradyrhizobia.
Several isolates of Rhizobium fredii were examined for their serological relatedness to each other, to Bradyrhizobium japonicum, and to other fast- and slow-growing rhizobia. Immunofluorescence, agglutination, and immunodiffusion analyses indicated that R. fredii contains at least three separate somatic serogroups, USDA 192, USDA 194, and USDA 205. There was no cross-reaction between any of the...
متن کاملIntra- and inter-specific competition in Rhizobium fredii and Bradyrhizobium japonicum as indigenous and introduced organisms
Schmidt 1973; Kapusta and Rouwenhorst 1973; Weaver and Frederick 1974). However, the numbers needed to overcome indigenous rhizobia are in many cases too excessive to be practical. In much of the soybean-growing area in the north central United States, an area encompassing many soil types, indigeneous strains of Bradyrhizobium japonicum serogroup 123 dominate nodulation of soybeans (Damirgi et ...
متن کاملPhylogeny of Fast-Growing Soybean-Nodulating Rhizobia Supports Synonymy of Sinovhizobium
We determined the sequences for a 260-base segment amplified by the polymerase chain reaction (corresponding to positions 44 to 337 in the Escherichia coli 16s rRNA sequence) from seven strains of fast-growing soybean-nodulating rhizobia (including the type strains of Rhizobium fredii chemovar fredii, Rhizobium fredii chemovar siensis, Sinorhizobium fredii, and Sinorhizobium xinjiangensis) and ...
متن کاملNodulation of Sesbania species by Rhizobium (Agrobacterium) strain IRBG74 and other rhizobia.
Concatenated sequence analysis with 16S rRNA, rpoB and fusA genes identified a bacterial strain (IRBG74) isolated from root nodules of the aquatic legume Sesbania cannabina as a close relative of the plant pathogen Rhizobium radiobacter (syn. Agrobacterium tumefaciens). However, DNA:DNA hybridization with R. radiobacter, R. rubi, R. vitis and R. huautlense gave only 44%, 5%, 8% and 8% similarit...
متن کاملGrowth of fast- and slow-growing rhizobia on ethanol.
Free-living soybean rhizobia and Bradyrhizobium spp. (lupine) have the ability to catabolize ethanol. Of the 30 strains of rhizobia examined, only the fast- and slow-growing soybean rhizobia and the slow-growing Bradyrhizobium sp. (lupine) were capable of using ethanol as a sole source of carbon and energy for growth. Two strains from each of the other Rhizobium species examined (R. meliloti, R...
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ژورنال
عنوان ژورنال: International Journal of Systematic Bacteriology
سال: 1986
ISSN: 0020-7713,1465-2102
DOI: 10.1099/00207713-36-4-550