Slow-growing and oligotrophic soil bacteria phylogenetically close to Bradyrhizobium japonicum
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چکیده
منابع مشابه
Slow-growing and oligotrophic soil bacteria phylogenetically close to Bradyrhizobium japonicum
Eleven isolates of slow-growing oligotrophic bacteria from grassland soil were found to be closely related by partial 16S rRNA sequence similarity and many common taxonomic traits. Analysis of full 16S rRNA gene sequences of four representative isolates and Agromonas oligotrophica S58 indicated that they were more closely related to Bradyrhizobium japonicum, a symbiotic nitrogen-fixing bacteriu...
متن کاملStability of Bradyrhizobium japonicum Inoculants after Introduction into Soil.
Bradyrhizobium japonicum USDA 125-Sp, USDA 138, and USDA 138-Sm had been used as inoculants for soybean (Glycine max (L.) Merr.) in soils previously free of B. japonicum. At 8 to 13 years after their release, these strains were reisolated from soil samples. A total of 115 isolates were obtained through nodules, and seven colonies were obtained directly by a serological method. The stability of ...
متن کاملPhylogeny and distribution of extra-slow-growing Bradyrhizobium japonicum harboring high copy numbers of RSK, RSL and IS1631
We previously reported that extra-slow-growing Bradyrhizobium japonicum isolates obtained from three field sites in Japan, designated as HRS (highly reiterated sequence-possessing) strains, have high copy numbers of the insertion sequences RSK and RSL. When strain collections in the USA, Japan, Korea, Thailand and China were examined by Southern hybridization using RSK, RSL and IS1631 as probes...
متن کاملChemotaxis of Bradyrhizobium japonicum to soybean exudates.
The chemotactic response of Bradyrhizobium japonicum toward soybean seed and root exudates was examined. Assays using various isoflavones and fractionated exudate indicated that isoflavones are not the principal attractants in exudates. Likewise, induction of nod genes with isoflavones or seed exudate before assay did not enhance chemotaxis. Screening of numerous compounds revealed that only di...
متن کاملyield and yield components reaction of soybean cultivars to inoculation by bradyrhizobium japonicum bacteria and nitrogen
some research indicates that n2 fixation in soybean cannot provide adequate nitrogen for proper yield. therefore, the effect of nitrogen and bradyrhizobium japonicum bacteria on some agronomic characteristics and quality of soybean cultivars was examined based on split plot in a randomized complete blocks design with three replications in 2012 at kerman township. treatments including control (w...
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ژورنال
عنوان ژورنال: FEMS Microbiology Ecology
سال: 1998
ISSN: 0168-6496,1574-6941
DOI: 10.1111/j.1574-6941.1998.tb00480.x