Diversity and specificity of Rhizobium leguminosarum biovar viciae on wild and cultivated legumes

  title={Diversity and specificity of Rhizobium leguminosarum biovar viciae on wild and cultivated legumes},
  author={Lesley A. Mutch and J. Peter W. Young},
  journal={Molecular Ecology},
  • L. Mutch, J. Young
  • Published 1 August 2004
  • Biology, Environmental Science
  • Molecular Ecology
The symbiotic partnerships between legumes and their root‐nodule bacteria (rhizobia) vary widely in their degree of specificity, but the underlying reasons are not understood. To assess the potential for host‐range evolution, we have investigated microheterogeneity among the shared symbionts of a group of related legume species. Host specificity and genetic diversity were characterized for a soil population of Rhizobium leguminosarum biovar viciae (Rlv) sampled using six wild Vicia and Lathyrus… 
Genomics of Specificity in the Symbiotic Interaction between Rhizobium leguminosarum and Legumes
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Genetic Variation in Host-Specific Competitiveness of the Symbiont Rhizobium leguminosarum Symbiovar viciae
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Overall, modification in root and nodule development appears to strongly influence the capacity of particular rhizobial genotypes to form nodules.
Population mixing of Rhizobium leguminosarum bv. viciae nodulating Vicia faba: the role of recombination and lateral gene transfer.
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Diversity of rhizobial and non-rhizobial bacteria nodulating wild ancestors of grain legume crop plants.
Results supporting the existence of new species nodulating wild ancestors are provided using the REP-PCR fingerprinting of rhizobial isolates recovered from Pisum sativum subsp.


Compatibility of Rhizobial Genotypes within Natural Populations of Rhizobium leguminosarum Biovar viciae for Nodulation of Host Legumes
Both components of the rhizobial genome may influence competitiveness for nodulation of pea, and rhizosphere colonization may be a decisive step in competition for nodule occupancy.
Rhizobium gone native: unexpected plasmid stability of indigenous Rhizobium leguminosarum.
Findings indicate that previous observations of sym plasmid transfer in agricultural settings may seriously overestimate the rates of successful conjugation in systems not impacted by human activities, and a nonrandom distribution of Rhizobium genotypes across host plant species and sampling site demonstrates the importance of both factors in shaping RhZobium population dynamics.
Conformity and diversity among field isolates of Rhizobium leguminosarum bv. viciae, bv. trifolii, and bv. phaseoli revealed by DNA hybridization using chromosome and plasmid probes
Dominant plasmid DNA hybridization patterns and more frequent combinations of plasmID patterns and chromosomal types were found among the isolates of each host plant species; the occurrence of alternative combinations indicated that genetic transfer and recombination among members of this soil population had taken place.
Diversity and genetic structure of a natural population of Rhizobium leguminosarum bv. trifolii isolated from Trifolium subterraneum L.
It is revealed that a population of naturally occurring isolates of Rhizobium leguminosarum bv.
Higher Diversity of Rhizobium leguminosarum Biovar viciae Populations in Arable Soils than in Grass Soils
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Host Plant Effects on Hybrids of Rhizobium leguminosarum Biovars viceae and trifolii
The results show that the host exerts some form of functional incompatibility when interacting with hybrid Rhizobium strains and that some hosts are more stringent than others.
Evidence for Genetic Exchange and Recombination of Rhizobium Symbiotic Plasmids in a Soil Population
Data indicate that, within this soil population, there has been genetic exchange of Sym plasmids, and in one instance the hybridization pattern indicates that in vivo recombination of two different Sym Plasmids may have occurred.
Rhizobium Population Genetics: Enzyme Polymorphism in Rhizobium leguminosarum from Plants and Soil in a Pea Crop
A population of Rhizobium leguminosarum biovar viceae symbiotic on the roots of a commercial pea crop was sampled by extracting 249 isolates from root nodules on nine plants, and the population on each individual plant was very diverse, but ET frequencies were similar from plant to plant.
Host plant effect on competition among strains of Rhizobium leguminosarum
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