Abstract
Establishment of the rhizobium-legume symbiosis requires a highly specific and complex signal exchange between both participants. Rhizobia perceive legume flavonoid compounds through LysR-type NodD regulators. Often, rhizobia encode multiple copies of nodD , which is one determinant of host specificity. In some species of rhizobia, the presence of multiple copies of NodD extends their symbiotic host-range. Here, we identified and characterized a second copy of nodD present in some strains of the clover microsymbiont Rhizobium leguminosarum bv. trifolii. The second nodD gene contributed to the competitive ability of the strain on white clover, an important forage legume. A screen for strains containing nodD2 could be utilized as one criterion to select strains with enhanced competitive ability for use as inoculants for pasture production.
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Claims 3
Claim · model-written summary
The second nodD gene contributed to the competitive nodulation ability of the Rhizobium leguminosarum bv. trifolii strain on white clover.
- Taxon
- white clover
Trifolium repense1 - Treatment
- second nodD genee1
- Interactor
- Rhizobium leguminosarum bv. trifoliiRhizobium leguminosarum bv. trifoliie2symbiont
- Gene
- nodDe2
- Outcome
- competitive abilitye1
- Direction
- contributede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The second nodD gene contributed to the competitive ability of the strain on white clover”
e2“a second copy of nodD present in some strains of the clover microsymbiont Rhizobium leguminosarum bv. trifolii”
Claim · model-written summary
A second copy of nodD is present in some strains of the clover microsymbiont Rhizobium leguminosarum bv. trifolii.
- Interactor
- Rhizobium leguminosarum bv. trifoliiRhizobium leguminosarum bv. trifoliie2symbiont
- Gene
- nodDe2
- Outcome
- second copy of nodDe2
TrifoliumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“a second copy of nodD present in some strains of the clover microsymbiont Rhizobium leguminosarum bv. trifolii”
Claim · model-written summary
Screening strains for nodD2 could select strains with enhanced competitive ability for use as white clover inoculants.
- Taxon
- white cloverTrifolium repense1
- Outcome
- strains with enhanced competitive abilitye3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The second nodD gene contributed to the competitive ability of the strain on white clover”
e3“A screen for strains containing nodD2 could be utilized as one criterion to select strains with enhanced competitive ability”