Host-specific regulation of symbiotic nitrogen fixation in Rhizobium leguminosarum biovar trifolii
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منابع مشابه
FnrN controls symbiotic nitrogen fixation and hydrogenase activities in Rhizobium leguminosarum biovar viciae UPM791.
Rhizobium leguminosarum bv. viciae UPM791 contains a second copy of the fnrN gene, which encodes a redox-sensitive transcriptional activator functionally homologous to Escherichia coli Fnr. This second copy (fnrN2) is located in the symbiotic plasmid, while fnrN1 is in the chromosome. Isolation and sequencing of the fnrN2 gene revealed that the deduced amino acid sequence of FnrN2 is 87.5% iden...
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Earlier studies on the respiratory systems in symbiotic nitrogen fixation (Wilson, 1938) indicated that the root nodule bacteria (Rhizobium spp.) reduce methylene blue anerobically in the presence of many organic compounds. With few exceptions, the efficiency of a given substrate as a hydrogen donator was approximately the same whether molecular oxygen or methylene blue was used as the hydrogen...
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Sciences, University of East Anglia, Norwich NR4 7TJ, UK 2 School of Biological Analysis of the nodulation characteristics of transposon-induced mutants of Rhizobium leguminosarum bv. viciae revealed that nodO and the closely-linked rhi genes contribute t o nodulation of peas (Pisum sativum) and the vetch Vicia hirsuta. Although mutation of nodO alone had no significant effect on nodulation of ...
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Fluctuations in numbers of Rhizobium leguminosarum biovar trifolii and its bacteriophages in two fields with different soil types were followed during a 17-month period in 1981 and 1982. Mean levels of both phage and rhizobia varied significantly (P < 0.05) on different occasions, with rhizobial levels varying from 1.6 x 10 to 2.0 x 10 cell per g of soil and phage from 0 to 1.7 x 10 PFU/g of so...
متن کاملThe dynamic response of cellular carbohydrates to a NaCl shock in Rhizobium leguminosarum biovar trifolii TA-
The dynamic response of cellular carbohydrates to a NaCl shock in Rhizobium leguminosarum biovar trifolii TA1 (0.25 M-NaCI) and Rhizobium meliloti SU-47 (0.4 M-NaCl) grown in NaC1-free medium was investigated in nongrowing cell cultures and in cell suspensions, using in vivo NMR. After transferring cells grown in a NaC1-free medium to a glutamic-acid-free medium containing mannitol and NaCI, bo...
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ژورنال
عنوان ژورنال: Microbiology
سال: 2007
ISSN: 1350-0872,1465-2080
DOI: 10.1099/mic.0.2007/006924-0