Characterization of variants of Bradyrhizobium elkanii and B. japonicum and symbiotic behaviour in soybeans
نویسندگان
چکیده
1 Biologist, MSc, Course of Biology, Universidade Luterana do Brasil, (ULBRA). 2 Engenheiro Agrônomo, Doctor, Department of Soil Science, Universidade Federal do Rio Grande do Sul, (UFRGS), CP 776 90001-970, Porto Alegre, RS, Brazil. E-mail: [email protected]. Corresponding author 3 Biologist, Master of Science Student, Course of Microbiologia Agrícola e do Ambiente, Department of Soil Science, UFRGS. ABSTRACT
منابع مشابه
A Selective Medium for the Isolation and Quantification of Bradyrhizobium japonicum and Bradyrhizobium elkanii Strains from Soils and Inoculants.
The ecological examination of members of the family Rhizobiaceae has been hampered by the lack of a selective medium for isolation of root nodule bacteria from soil. A novel non-antibiotic-containing medium has been developed which allows selective isolation of Bradyrhizobium japonicum and B. elkanii strains from soil and inoculants. The medium, BJSM, is based on the resistance of B.japonicum a...
متن کاملApplication of representational difference analysis to identify genomic differences between Bradyrhizobium elkanii and B. Japonicum species
Bradyrhizobium elkanii is successfully used in the formulation of commercial inoculants and, together with B. japonicum, it fully supplies the plant nitrogen demands. Despite the similarity between B. japonicum and B. elkanii species, several works demonstrated genetic and physiological differences between them. In this work Representational Difference Analysis (RDA) was used for genomic compar...
متن کاملBradyrhizobium elkanii, Bradyrhizobium yuanmingense and Bradyrhizobium japonicum are the main rhizobia associated with Vigna unguiculata and Vigna radiata in the subtropical region of China.
Cowpea (Vigna unguiculata) and mung bean (Vigna radiata) are important legume crops yet their rhizobia have not been well characterized. In the present study, 62 rhizobial strains isolated from the root nodules of these plants grown in the subtropical region of China were analyzed via a polyphasic approach. The results showed that 90% of the analyzed strains belonged to or were related to Brady...
متن کاملSymbiotic effect of Bradyrhizobium yuanmingense isolates over Bradyrhizobium japonicum with soybean
Symbiotic effect of twenty one indigenous Bradyrhizobium yuanmingense strains obtained from nodules of soybean cultivated in India was comparatively evaluated with B. japonicum ASR011 on soybean cv. JS335 for improved nodulation and plant growth performance under greenhouse conditions. Significant variation in symbiotic potential among native B. yuanmingense strains was observed and few of them...
متن کاملSlow-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...
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تاریخ انتشار 2004