Abstract
The effect of phosphorus (P) deficiency on phosphatases activities in N2-fixing legumes has been widely studied in hydroponic culture. However, the response of acid phosphatase (APase) and phytase in rhizosphere, nodules and seeds of Phaseolus vulgaris to low soil’s P-availability is not yet fully understood. In this study, six genotypes of N2-fixing P. vulgaris were grown under contrasting soil P-availabilities; i.e., low (4.3 mg P kg−1) and sufficient (16.7 mg P kg−1) in the Haouz region of Morocco. At flowering and maturity stages, plants were harvested and analyzed for their phosphatases activities, growth and P content. Results show that, low P decreased nodulation, growth, P uptake and N accumulation in all the genotypes, but to a greater extent in the sensitive recombinant inbreed line 147. In addition, while seed P content was slightly reduced under low P soil; a higher P was noticed in the Flamingo and Contender large seeded-beans (6.15 to 7.11 mg g−1). In these latter genotypes, high APase and phytase activities in seeds and nodules were associated with a significant decline in rhizosphere’s available P. APase activity was mainly stimulated in nodules, whereas phytase activity was highly induced in seeds (77%). In conclusion, the variations of APase and phytase activities in nodules and seeds depend on genotype and can greatly influence the internal utilization of P, which might result in low P soil tolerance in N2-fixing legumes.
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Claims 11
Claim · model-written summary
Low P decreased nodulation.
- Taxon
- Phaseolus vulgaris
Phaseolus vulgarist0 - Treatment
- low Pe0
- Outcome
- nodulatione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low P decreased nodulation, growth, P uptake and N accumulation in all the genotypes”
t0“Phaseolus vulgaris”
Claim · model-written summary
Low P decreased growth.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Treatment
- low Pe0
- Outcome
- growthe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low P decreased nodulation, growth, P uptake and N accumulation in all the genotypes”
t0“Phaseolus vulgaris”
Claim · model-written summary
Low P decreased P uptake.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Treatment
- low Pe0
- Outcome
- P uptakee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low P decreased nodulation, growth, P uptake and N accumulation in all the genotypes”
t0“Phaseolus vulgaris”
Claim · model-written summary
Low P decreased N accumulation.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Treatment
- low Pe0
- Outcome
- N accumulatione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low P decreased nodulation, growth, P uptake and N accumulation in all the genotypes”
t0“Phaseolus vulgaris”
Claim · model-written summary
Low P slightly reduced seed P content.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Treatment
- low Pe0
- Outcome
- seed P contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed P content was slightly reduced under low P soil”
t0“Phaseolus vulgaris”
Claim · model-written summary
The sensitive recombinant inbreed line 147 had a greater reduction under low P.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Material
- recombinant inbreed line 147e0
- Outcome
- nodulation, growth, P uptake and N accumulatione1
- Direction
- greater extente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but to a greater extent in the sensitive recombinant inbreed line 147”
e1“low P decreased nodulation, growth, P uptake and N accumulation in all the genotypes”
t0“Phaseolus vulgaris”
Claim · model-written summary
Flamingo large seeded beans had higher seed P.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Material
- Flamingoe0
- Outcome
- higher Pe0
- Direction
- highere0
- Value
- 6.15 to 7.11 mg g−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a higher P was noticed in the Flamingo and Contender large seeded-beans (6.15 to 7.11 mg g−1)”
t0“Phaseolus vulgaris”
Claim · model-written summary
Contender large seeded beans had higher seed P.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Material
- Contendere0
- Outcome
- higher Pe0
- Direction
- highere0
- Value
- 6.15 to 7.11 mg g−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a higher P was noticed in the Flamingo and Contender large seeded-beans (6.15 to 7.11 mg g−1)”
t0“Phaseolus vulgaris”
Claim · model-written summary
High seed and nodule APase and phytase activity was associated with declining rhizosphere available P.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Organ / stage
- seeds and nodulese0
- Gene
- APase and phytasee0
- Outcome
- rhizosphere’s available Pe0
- Direction
- declinee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high APase and phytase activities in seeds and nodules were associated with a significant decline in rhizosphere’s available P”
t0“Phaseolus vulgaris”
Claim · model-written summary
APase activity was mainly stimulated in nodules.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Organ / stage
- nodulese0
- Gene
- APasee0
- Outcome
- APase activitye0
- Direction
- stimulatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“APase activity was mainly stimulated in nodules”
t0“Phaseolus vulgaris”
Claim · model-written summary
Phytase activity was highly induced in seeds by 77%.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Organ / stage
- seedse0
- Gene
- phytasee0
- Outcome
- phytase activitye0
- Direction
- inducede0
- Value
- 77%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phytase activity was highly induced in seeds (77%)”
t0“Phaseolus vulgaris”
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