Ineffective nodulation of Sesbania macrocarpa by Sinorhizobium meliloti strain RCR2011
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چکیده
منابع مشابه
Expression of a Serratia marcescens chitinase gene in Sinorhizobium fredii USDA191 and Sinorhizobium meliloti RCR2011 impedes soybean and alfalfa nodulation.
A gene encoding chitinase from Serratia marcescens BJL200 was cloned into a broad-host-range vector (pRK415) and mobilized into Sinorhizobium fredii USDA191. Chitinolytic activity was detected in S. fredii USDA191 transconjugants that carried the S. marcescens chiB gene. Chitinase-producing S. fredii USDA191 formed nodules on soybean cultivar McCall. However, there was a delay in nodule formati...
متن کاملFormation of chloroform and tetrachloroethene by Sinorhizobium meliloti strain 1021.
UNLABELLED The mechanisms and organisms involved in the natural formation of volatile organohalogen compounds (VOX) are largely unknown. We provide evidence that the common and widespread soil bacterium Sinorhizobium meliloti strain 1021 is capable of producing up to 3338·6 ± 327·8 ng l(-1) headspace volume of chloroform (CHCl3 ) and 807·8 ± 13·5 ng l(-1) headspace volume of tetrachloroethene ...
متن کاملIsolation of salt-sensitive mutants of Sinorhizobium meliloti strain Rm1021.
The determinants necessary for adaptation to high NaCl concentrations and competition for nodule occupancy in Sinorhizobium meliloti were investigated genetically. Mutations in fabG as well as smc02909 (transmembrane transglycosylase), trigger factor (tig) and smc00717 (probably ftsE) gave rise to strains that were unable to tolerate high salt and were uncompetitive for nodule occupancy relativ...
متن کاملConstruction and environmental release of a Sinorhizobium meliloti strain genetically modified to be more competitive for alfalfa nodulation.
Highly efficient nitrogen-fixing strains selected in the laboratory often fail to increase legume production in agricultural soils containing indigenous rhizobial populations because they cannot compete against these populations for nodule formation. We have previously demonstrated, with a Sinorhizobium meliloti PutA- mutant strain, that proline dehydrogenase activity is required for colonizati...
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...
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ژورنال
عنوان ژورنال: FEMS Microbiology Letters
سال: 1998
ISSN: 0378-1097
DOI: 10.1016/s0378-1097(98)00270-5