Academic literature on the topic 'Rhizobium leguminosarum – Genetics'

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Journal articles on the topic "Rhizobium leguminosarum – Genetics"

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Kucey, R. M. N., and M. F. Hynes. "Populations of Rhizobium leguminosarum biovars phaseoli and viceae in fields after bean or pea in rotation with nonlegumes." Canadian Journal of Microbiology 35, no. 6 (1989): 661–67. http://dx.doi.org/10.1139/m89-107.

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Populations of Rhizobium leguminosarum bv. phaesoli and bv. viceae in southern Alberta soils were measured over a period of 4 years using a most probable number method. Five fields cropped to bean (Phaseolus vulgaris L.), five fields cropped to pea (Pisum sativum L.), and two fields cropped to wheat were used as test sites. Legume crops had received appropriate legume inoculants. Fields were sampled in the fall of the crop year and in the spring of the following 3 years during which fields were cropped to nonlegumes or left fallow. Numbers of R. leguminosarum bv. phaseoli were 100 to 1000 time
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George, M. L. C., J. P. W. Young, and D. Borthakur. "Genetic characterization of Rhizobium sp. strain TAL1145 that nodulates tree legumes." Canadian Journal of Microbiology 40, no. 3 (1994): 208–15. http://dx.doi.org/10.1139/m94-034.

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Rhizobium sp. strain TALI 145 nodulates Leucaena ieucocephaia and Phaseolus vulgaris, in addition to a wide range of tropical tree legumes. Six overlapping clones that complemented nodulation defects in leucaena and bean rhizobia were isolated and a 40-kb map of the symbiosis region was constructed. The common nod and nifA genes were situated approximately 17 kb apart, with the nodlJ genes in between. These clones enabled a derivative of TAL1145 carrying a partially deleted pSym to form ineffective nodules on both leucaena and bean, and a similar derivative of Rhizobium etli TAL182 to form ine
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Soberón-Chávez, Gloria, and Rebeca Nájera. "Isolation from soil of Rhizobium leguminosarum lacking symbiotic information." Canadian Journal of Microbiology 35, no. 4 (1989): 464–68. http://dx.doi.org/10.1139/m89-071.

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Bacteria resembling Rhizobium leguminosarum, but lacking symbiotic information, were isolated from soil of two different geographical origins. One of these bacteria belongs to a previously described Rhizobium leguminosarum bv. phaseoli somatic serogroup, is fully complemented for nodulation and nitrogen fixation by an R. leguminosarum bv. phaseoli symbiotic plasmid, and is able to compete for bean nodulation with indigenous R. leguminosarum bv. phaseoli strains. This is the first report giving evidence for persistence in soil of Rhizobium lacking symbiotic information.Key words: Rhizobium ecol
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Chakrabarti, S. K., A. K. Mishra, and P. K. Chakrabartty. "DNA homology studies of rhizobia from Cicer arietinum L." Canadian Journal of Microbiology 32, no. 6 (1986): 524–27. http://dx.doi.org/10.1139/m86-096.

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The taxonomic status of rhizobia which infect Cicer arietinum is poorly defined. Historically these organisms have been placed under Rhizobium leguminosarum; however, later reports suggested that they be treated as a separate cross-inoculation group. Therefore, DNA homology tests were carried out with various rhizobia. The data indicate that rhizobia from Cicer cannot be placed under any of the recognised species of Rhizobium.
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Hardy, Kimberly, and J. Diane Knight. "Evaluation of biochars as carriers for Rhizobium leguminosarum." Canadian Journal of Microbiology 67, no. 1 (2021): 53–63. http://dx.doi.org/10.1139/cjm-2020-0416.

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Peat is the standard carrier material used for commercial microbial inoculants produced in Canada and the United States. Peat is a slowly renewable resource and its production is extremely vulnerable to variable weather conditions. Furthermore, it may not be widely available in all countries. We investigated the potential to develop biochar as a carrier material. Our goal was to evaluate if different biochars perform comparably in supporting rhizobial survival, and what characteristics contribute to their ability to support rhizobial survival. Evaluation included characterization of the biocha
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Laguerre, Gisèle, Marc Bardin, and Noëlle Amarger. "Isolation from soil of symbiotic and nonsymbiotic Rhizobium leguminosarum by DNA hybridization." Canadian Journal of Microbiology 39, no. 12 (1993): 1142–49. http://dx.doi.org/10.1139/m93-172.

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A procedure based upon DNA hybridization was developed for the specific detection of Rhizobium leguminosarum and its different biovars among bacteria isolated from soil. DNA colony hybridization and restriction fragment length polymorphism analysis with a R. leguminosarum chromosomal probe were found to be species specific for R. leguminosarum and Rhizobium etli. By using R. leguminosarum nod gene probes, biovar specificity was obtained. Of 302 soil isolates screened for their inability to grow on Luria-Bertani agar medium, 13 strains could be assigned to the R. leguminosarum species on the ba
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Young, J. Peter W., Sara Moeskjær, Alexey Afonin, et al. "Defining the Rhizobium leguminosarum Species Complex." Genes 12, no. 1 (2021): 111. http://dx.doi.org/10.3390/genes12010111.

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Bacteria currently included in Rhizobium leguminosarum are too diverse to be considered a single species, so we can refer to this as a species complex (the Rlc). We have found 429 publicly available genome sequences that fall within the Rlc and these show that the Rlc is a distinct entity, well separated from other species in the genus. Its sister taxon is R. anhuiense. We constructed a phylogeny based on concatenated sequences of 120 universal (core) genes, and calculated pairwise average nucleotide identity (ANI) between all genomes. From these analyses, we concluded that the Rlc includes 18
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Wielbo, Jerzy, Monika Marek-Kozaczuk, Agnieszka Kubik-Komar, and Anna Skorupska. "Increased metabolic potential of Rhizobium spp. is associated with bacterial competitiveness." Canadian Journal of Microbiology 53, no. 8 (2007): 957–67. http://dx.doi.org/10.1139/w07-053.

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Of 105 rhizobial isolates obtained from nodules of commonly cultivated legumes, we selected 19 strains on the basis of a high rate of symbiotic plant growth promotion. Individual strains within the species Rhizobium leguminosarum bv. trifolii , R. leguminosarum bv. viciae , and Rhizobium etli displayed variation not only in plasmid sizes and numbers but also in the chromosomal 16S–23S internal transcribed spacer. The strains were tagged with gusA gene and their competitiveness was examined in relation to an indigenous population of rhizobia under greenhouse conditions. A group of 9 strains was
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Sivakumaran, S., B. D. W. Jarvis, and P. J. Lockhart. "Identification of soil bacteria expressing a symbiotic plasmid from Rhizobium leguminosarum bv. trofolii." Canadian Journal of Microbiology 43, no. 2 (1997): 164–77. http://dx.doi.org/10.1139/m97-022.

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A hundred strains of non-nodulating, Gram-negative, rod-shaped bacteria were isolated from clover–ryegrass pastures on three different soil types and from a sandy loam under lupins. When crossed with Escherichia coli PN200 containing the cointegrate plasmid pPN1, 11 transconjugants gained the ability to form nodules on the roots of white clover (Trifolium repens cv. Grasslands Huia). A nodA probe indicated that they had gained nodulation genes. The identities of these 11 strains and 4 others derived from earlier work on non-nodulating root nodule bacteria, were determined by ribotyping, DNA –
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Josic, Dragana, Bogic Milicic, Snezana Mladenovic-Drinic, and Mirjana Jarak. "Genodiversity of dominant Rhizobium leguminosarum bv. Trifolii isolated from 11 types of soil in Serbia." Genetika 40, no. 2 (2008): 179–90. http://dx.doi.org/10.2298/gensr0802179j.

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Rhizobium leguminosarum bv. trifolii is microsymbiont Trifolium pratense and Trifolium repens, which are very important legumes in Serbia. The natural nodulating population of those bacteria was collected and estimated biodiversity distribution by monitoring dominant genotypes of these bacteria. The population of Rhizobium leguminosarum bv. trifolii were collected from 50 marked locations of 11 types of soil in Serbia. 437 natural isolates, rescued from nodules of Trifolium repens or Trifolium pratense, were analyzed by phenotypic approach. We obtained 156 different isolates on the basis of di
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Dissertations / Theses on the topic "Rhizobium leguminosarum – Genetics"

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Simpkins, Sean A. "The DnaK molecular chaperone of Rhizobium leguminosarum." Thesis, University of East Anglia, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302035.

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Marie, Corinne. "Roles of two Rhizobium leguminosarum glucosamine synthases in symbiosis." Thesis, University of East Anglia, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334333.

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Rossen, L. "Molecular analysis of the nodulation genes of Rhizobium leguminosarum." Thesis, University of East Anglia, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370396.

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Hawkins, Fiona K. L. "Studies on the nifA gene of Rhizobium leguminosarum." Thesis, University of East Anglia, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329054.

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Stevens, James B. "The molecular genetics of iron uptake in rhizobium leguminosarum." Thesis, University of East Anglia, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323075.

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Mudd, E. A. "Transcription and translation from a symbiotic plasmid of Rhizobium leguminosarum." Thesis, University of East Anglia, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355533.

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Sindhu, Satyavir Singh. "Molecular analysis of lipopolysaccharide and membrane associated proteins in Rhizobium leguminosarum." Thesis, University of East Anglia, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.256988.

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This study describes the use of monoclonal antibodies to investigate molecular components of the Rhizobium cell surface that might be important for symbiotic interactions with the host legume. Components that have been identified include lipopolysaccharide and both membrane-associated and secreted proteins. Differences were observed in the structure and antigenicity of lipopolysaccharide (LPS) from free-living rhizobia compared with that of endosymbiotic bacteroids. Culture pH, oxygen concentration and carbon source were all found to be important factors that could affect the expression of LPS
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Barisic, Valeria. "Characterization of Putative ExbB and ExbD Leads to the Identification of a Potential Tol-Pal System in Rhizobium leguminosarum ATCC 14479." Digital Commons @ East Tennessee State University, 2015. https://dc.etsu.edu/etd/2489.

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Rhizobium leguminosarum is a Gram negative nitrogen-fixing soil bacterium. Due to the limited bioavailability of iron, bacteria utilize siderophores that scavenge and bind available iron. The transport of iron-siderophore complexes is achieved by the TonB-ExbB-ExbD complex. We have previously shown that a functional TonB protein is necessary for iron transport by creating ΔtonB mutants and assessing their growth and 55Fe-siderophore transport ability. We attempted to identify and characterize the roles of putative exbB and exbD genes using a similar approach. Growth curves and sequence analyse
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Mavridou, Annoula. "Genetic loci of Rhizobium leguminosarum affecting nod gene expression." Thesis, University of East Anglia, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316102.

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Miller, Simon Hugh, and n/a. "Genetic basis for the host-specific nitrogen fixation phenotype of Caucasian clover rhizobia." University of Otago. Department of Microbiology, 2006. http://adt.otago.ac.nz./public/adt-NZDU20070306.155157.

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Trifolium ambiguum (Caucasian clover) is being released in New Zealand for use in areas where growth of T. repens (white clover) is marginal. Although closely related to T. repens, T. ambiguum has unique and highly specific nodulation requirements and as rhizobial strains capable of effectively nodulating T. ambiguum are not naturally found in New Zealand soils, they must be introduced with the seed. Rhizobium leguminosarum bv. trifolii strains such as ICC105 form effective nodules on T. ambiguum but ineffective (Fix⁻) nodules on T. repens. The T. repens nodules nevertheless develop normally a
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Books on the topic "Rhizobium leguminosarum – Genetics"

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Mavridou, Annoula. Genetic loci of Rhizobium leguminosarum affecting nod gene expression. University of East Anglia, 1992.

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Strain, Steven R. Population genetic structure and ecology of Rhizobium leguminosarum. 1993.

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Book chapters on the topic "Rhizobium leguminosarum – Genetics"

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Downie, J. A., B. P. Surin, I. J. Evans, et al. "Nodulation Genes of Rhizobium Leguminosarum." In Molecular genetics of plant-microbe interactions. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-4482-4_56.

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Colonna-Romano, S., R. Defez, M. Filser, et al. "Glutamine Synthetases of Rhizobium Leguminosarum." In Molecular genetics of plant-microbe interactions. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-4482-4_64.

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Ruiz-Argüeso, T., E. Hidalgo, J. Murillo, L. Rey, and J. M. Palacios. "Molecular Genetics of the Hydrogen Uptake System of Rhizobium Leguminosarum." In Advances in Molecular Genetics of Plant-Microbe Interactions Vol. 1. Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-015-7934-6_34.

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Manian, S. S., P. Grönger, U. B. Priefer, and A. Pühler. "Identification, Characterisation and Sequence Analysis of the Rhizobium Leguminosarum NifA Gene." In Molecular genetics of plant-microbe interactions. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-4482-4_69.

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Sutton, J. M., R. Rivilla, A. E. Davies, et al. "Functional Analysis of Nodo and Nodt from Rhizobium Leguminosarum Biovar Viciae." In Advances in Molecular Genetics of Plant-Microbe Interactions. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-0177-6_15.

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Tichy, H. V., C. Schild, H. M. Ripke, L. M. Nelson, H. Fees, and W. Lotz. "Analysis of hup DNA and Hup host range of Rhizobium leguminosarum BIO." In Molecular genetics of plant-microbe interactions. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-4482-4_70.

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Hontelez, Jan, Rene Klein Lankhorst, Jan-Dirk Jansma, Evert Jacobsen, Rommert C. van den Bos, and Ab van Kammen. "Characterization of Symbiotic Genes and Regulation of Their Expression in Rhizobium Leguminosarum PRE." In Molecular genetics of plant-microbe interactions. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-4482-4_60.

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Spaink, Herman P., Guido V. Bloemberg, André H. M. Wijfjes, et al. "The Molecular Basis of Host Specificity in the Rhizobium Leguminosarum-Plant Interaction." In Advances in Molecular Genetics of Plant-Microbe Interactions. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-0177-6_13.

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Zaat, S. A. J., A. A. N. van Brussel, C. A. Wijffelman, et al. "Naringenin Induces the nodABC Promotor of Rhizobium Leguminosarum as Well as Tsr Factor Production." In Molecular genetics of plant-microbe interactions. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-4482-4_62.

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Downie, J. A., C. Marie, A. K. Scheu, et al. "Genetic and Biochemical Studies on the Nodulation Genes of Rhizobium Leguminosarum bv. Viciae." In Advances in Molecular Genetics of Plant-Microbe Interactions Vol. 1. Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-015-7934-6_21.

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Conference papers on the topic "Rhizobium leguminosarum – Genetics"

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Aksenova, T. S., O. P. Onishchuk, O. N. Kurchak, E. E. Andronov, and N. A. Provorov. "Study of the genetic organization of the strain Rhizobium leguminosarum bv. trifolii forming a symbiosis with clover Trifolium ambiguum." In 2nd International Scientific Conference "Plants and Microbes: the Future of Biotechnology". PLAMIC2020 Organizing committee, 2020. http://dx.doi.org/10.28983/plamic2020.014.

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R. leguminosarum bv. trifolii strains are characterized by narrow host specificity. We have identified a strain that forms nodules on several types of clover and studied the genetic organization of its symbiotic region.
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