Abstract
Six effective Rhizobium leguminosarum bv. phaseoli strains were examined for nodulation competitiveness on common bean (Phaseolus vulgaris L.), using all possible two-strain combinations of inoculum. Nodule occupancy was determined with strain-specific fluorescent antibodies. The strains were divided into three groups according to their overall competitive abilities on pole bean cv. Kentucky Wonder and bush bean cv. Bountiful. Strains TAL 182 and TAL 1472 were highly competitive (greater than 70% nodule occupancy); strains KIM-5, Viking 1, and CIAT 899 were moderately competitive (approximately 50% nodule occupancy); and strain CIAT 632 was poorly competitive (less than 5% nodule occupancy). The competitiveness of the six strains was similar on the two host cultivars. The proportion of competing strains in the inoculum influenced the nodule occupancy of the highly competitive and moderately competitive strains, but not that of the poorly competitive strain. Two outstanding strains (TAL 182 and TAL 1472) were identified as ideal model strains for molecular and genetic studies on nodulation competitiveness.
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Claims 7
Claim · model-written summary
Strains TAL 182 and TAL 1472 were highly competitive for nodulation of common bean, with greater than 70% nodule occupancy.
- Taxon
- common bean
Phaseolus vulgarist0 - Interactor
- TAL 182e0symbiont
- Second interactor
- TAL 1472e0symbiont
- Outcome
- nodule occupancye0
- Value
- greater than 70%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Strains TAL 182 and TAL 1472 were highly competitive (greater than 70% nodule occupancy)”
t0“common bean”
Claim · model-written summary
Strains KIM-5, Viking 1 and CIAT 899 were moderately competitive for nodulation of common bean, with approximately 50% nodule occupancy.
- Taxon
- common beanPhaseolus vulgarist0
- Interactor
- KIM-5e0symbiont
- Second interactor
- Viking 1e0symbiont
- Outcome
- nodule occupancye0
- Value
- approximately 50%e0
- Qualifier
- CIAT 899e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“strains KIM-5, Viking 1, and CIAT 899 were moderately competitive (approximately 50% nodule occupancy)”
t0“common bean”
Claim · model-written summary
Strain CIAT 632 was poorly competitive for nodulation of common bean, with less than 5% nodule occupancy.
- Taxon
- common beanPhaseolus vulgarist0
- Interactor
- CIAT 632e0symbiont
- Outcome
- nodule occupancye0
- Value
- less than 5%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“strain CIAT 632 was poorly competitive (less than 5% nodule occupancy)”
t0“common bean”
Claim · model-written summary
The competitiveness of the six strains was similar on the two host cultivars.
- Taxon
- common beanPhaseolus vulgarist0
- Material
- two host cultivarse0
- Outcome
- competitivenesse0
- Direction
- similare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The competitiveness of the six strains was similar on the two host cultivars”
t0“common bean”
Claim · model-written summary
The proportion of competing strains in the inoculum influenced the nodule occupancy of the highly and moderately competitive strains.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- proportion of competing strains in the inoculume0
- Outcome
- nodule occupancye0
- Qualifier
- highly competitive and moderately competitive strainse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The proportion of competing strains in the inoculum influenced the nodule occupancy of the highly competitive and moderately competitive strains”
t0“common bean”
Claim · model-written summary
The proportion of competing strains in the inoculum did not influence the nodule occupancy of the poorly competitive strain.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- proportion of competing strains in the inoculume0
- Outcome
- nodule occupancye0
- Qualifier
- poorly competitive straine0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The proportion of competing strains in the inoculum influenced the nodule occupancy of the highly competitive and moderately competitive strains, but not that of the poorly competitive strain”
t0“common bean”
Claim · model-written summary
The authors identified strains TAL 182 and TAL 1472 as ideal model strains for molecular and genetic studies on nodulation competitiveness.
- Taxon
- common beanPhaseolus vulgarist0
- Outcome
- ideal model strains for molecular and genetic studies on nodulation competitivenesse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two outstanding strains (TAL 182 and TAL 1472) were identified as ideal model strains for molecular and genetic studies on nodulation competitiveness”
t0“common bean”
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inoculation · symbiosis · Phaseolus vulgaris (common bean)Positive and negative results
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See all 90 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.