Abstract
The improvement of common bean production requires the selection of effective rhizobia strains and Phaseolus vulgaris genotypes adapted to available soil phosphorus limitations. The interactions between bean genotypes and rhizobia were studied in hydroponic culture using six genotypes and four strains, CIAT899 as reference and three strains isolated from nodule of farmer's fields in the Marrakech region. The phosphorus (P) sub-deficiency caused a significant reduction on shoot biomass in some bean genotype-rhizobia combinations. Nodule biomass is significantly more reduced under P limitation for several combinations tested. Bean plants inoculated with these local rhizobial strains showed higher nodulation and an increase of nodules phytase and phosphatase activities under phosphorus sub-deficiency especially for RhM11 strain. It was concluded that the studied bean-rhizobia symbiosis differ in their adaptation to phosphorus sub-deficiency and the nodule phosphatases and phytases activities may constitute a strategy of nodulated bean plants to adapt their nitrogen fixation to P deficiency.
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Claims 7
Claim · model-written summary
P sub-deficiency reduced shoot biomass in some bean genotype-rhizobia combinations.
- Taxon
- beane0
- Treatment
- phosphorus (P) sub-deficiencye0
- Outcome
- shoot biomasse0
- Direction
- reductione0
- Qualifier
- some bean genotype-rhizobia combinationse0
Not reportedComparator
Verbatim
e0“The phosphorus (P) sub-deficiency caused a significant reduction on shoot biomass in some bean genotype-rhizobia combinations.”
Claim · model-written summary
P limitation reduced nodule biomass in several combinations.
- Taxon
- COMMON BEAN
Phaseolus vulgarist0 - Treatment
- P limitatione0
- Outcome
- Nodule biomasse0
- Direction
- more reducede0
- Qualifier
- several combinations testede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nodule biomass is significantly more reduced under P limitation for several combinations tested.”
t0“COMMON BEAN”
Claim · model-written summary
Local rhizobial strains increased nodulation under phosphorus sub-deficiency, especially RhM11.
- Taxon
- Beane0
- Treatment
- inoculated with these local rhizobial strainse0
- Interactor
- RhM11 straine0symbiont
- Outcome
- nodulatione0
- Direction
- highere0
- Qualifier
- especially for RhM11 straine0
Not reportedComparator
Verbatim
e0“Bean plants inoculated with these local rhizobial strains showed higher nodulation and an increase of nodules phytase and phosphatase activities under phosphorus sub-deficiency especially for RhM11 strain.”
Claim · model-written summary
Local rhizobial strains increased nodules phytase under phosphorus sub-deficiency, especially RhM11.
- Taxon
- Beane0
- Treatment
- inoculated with these local rhizobial strainse0
- Interactor
- RhM11 straine0symbiont
- Outcome
- nodules phytasee0
- Direction
- increasee0
- Qualifier
- especially for RhM11 straine0
Not reportedComparator
Verbatim
e0“Bean plants inoculated with these local rhizobial strains showed higher nodulation and an increase of nodules phytase and phosphatase activities under phosphorus sub-deficiency especially for RhM11 strain.”
Claim · model-written summary
Local rhizobial strains increased phosphatase activities under phosphorus sub-deficiency, especially RhM11.
- Taxon
- Beane0
- Treatment
- inoculated with these local rhizobial strainse0
- Interactor
- RhM11 straine0symbiont
- Outcome
- phosphatase activitiese0
- Direction
- increasee0
- Qualifier
- especially for RhM11 straine0
Not reportedComparator
Verbatim
e0“Bean plants inoculated with these local rhizobial strains showed higher nodulation and an increase of nodules phytase and phosphatase activities under phosphorus sub-deficiency especially for RhM11 strain.”
Claim · model-written summary
Bean-rhizobia symbioses differ in adaptation to P sub-deficiency.
Verbatim
e0“It was concluded that the studied bean-rhizobia symbiosis differ in their adaptation to phosphorus sub-deficiency and the nodule phosphatases and phytases activities may constitute a strategy of nodulated bean plants to adapt their nitrogen fixation to P deficiency.”
Claim · model-written summary
The authors suggest nodule phosphatases and phytases help nodulated bean adapt nitrogen fixation to P deficiency.
Verbatim
e0“It was concluded that the studied bean-rhizobia symbiosis differ in their adaptation to phosphorus sub-deficiency and the nodule phosphatases and phytases activities may constitute a strategy of nodulated bean plants to adapt their nitrogen fixation to P deficiency.”
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