Abstract
The present study investigated different levels (S1: 100% of field capacity- Control S2: 50% of field capacity-moderate stress; S3: 0% of field capacity-severe stress) of drought stress on oxidative damages and variations in antioxidants in the two bean varieties Bn-16 (drought-sensitive), Bn-150 (drought-tolerant) to elucidate the antioxidative protective mechanism governing differential drought tolerance. The shoot fresh weight, shoot height, leaf number and area, RWC were reduced with different level of drought stress. However this reduction clearly occurred in Bn-16 (sensitive). Antioxidative enzyme activities, such as superoxide dismutase, catalase, ascorbate peroxidase and glutation reductase, had a greater increase in tolerant genotypes (Bn-150) than in sensitive ones (Bn-16). The level of lipid peroxidation was measured by estimating malondialdehyde content. Lipid peroxidation increased with increasing drought conditions in all genotypes, although Bn-150 was the least affected when compared with the other genotype. Total phenolic and flavonoid content increased in bean genotypes under S2 and S3 conditions. The highest total phenolic and flavonoid contents were attained in Bn-150 subjected to S3 treatment. These results indicated that an antioxidant defence system, osmolytes (such as proline), and secondary metabolites play important roles in common bean (Phaseolus vulgaris L) during drought stress and recovery.
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Claims 11
Claim · model-written summary
Drought reduced shoot fresh weight, shoot height, leaf number and area.
- Taxon
- Phaseolus vulgaris L.
Phaseolus vulgarist0 - Treatment
- drought stresse0
- Outcome
- shoot fresh weight, shoot height, leaf number and areae0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The shoot fresh weight, shoot height, leaf number and area, RWC were reduced with different level of drought stress.”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
Drought reduced relative water content.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Treatment
- drought stresse0
- Outcome
- RWCe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The shoot fresh weight, shoot height, leaf number and area, RWC were reduced with different level of drought stress.”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
The reduction in growth and water status was clearer in sensitive Bn-16.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Material
- Bn-16e0
- Outcome
- this reductione0
- Direction
- reductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However this reduction clearly occurred in Bn-16 (sensitive).”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
Antioxidant enzyme activities increased more in tolerant Bn-150 than in sensitive Bn-16.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Material
- Bn-150e0
- Gene
- superoxide dismutase, catalase, ascorbate peroxidase and glutation reductasee0
- Outcome
- Antioxidative enzyme activitiese0
- Direction
- greater increasee0
- Comparator
- Bn-16e0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Antioxidative enzyme activities, such as superoxide dismutase, catalase, ascorbate peroxidase and glutation reductase, had a greater increase in tolerant genotypes (Bn-150) than in sensitive ones (Bn-16).”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
Lipid peroxidation increased with drought severity in both genotypes.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Treatment
- drought conditionse0
- Outcome
- Lipid peroxidatione0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lipid peroxidation increased with increasing drought conditions in all genotypes, although Bn-150 was the least affected when compared with the other genotype.”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
Bn-150 was least affected by lipid peroxidation under drought.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Material
- Bn-150e0
- Outcome
- Lipid peroxidatione0
- Direction
- least affectede0
- Comparator
- the other genotypee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lipid peroxidation increased with increasing drought conditions in all genotypes, although Bn-150 was the least affected when compared with the other genotype.”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
Total phenolic content increased under S2 and S3.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Treatment
- S2 and S3 conditionse0
- Outcome
- Total phenolice0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total phenolic and flavonoid content increased in bean genotypes under S2 and S3 conditions.”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
Flavonoid content increased under S2 and S3.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Treatment
- S2 and S3 conditionse0
- Outcome
- flavonoid contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total phenolic and flavonoid content increased in bean genotypes under S2 and S3 conditions.”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
Bn-150 under S3 had the highest total phenolic content.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Material
- Bn-150e0
- Treatment
- S3 treatmente0
- Outcome
- total phenolice0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest total phenolic and flavonoid contents were attained in Bn-150 subjected to S3 treatment.”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
Bn-150 under S3 had the highest flavonoid content.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Material
- Bn-150e0
- Treatment
- S3 treatmente0
- Outcome
- flavonoid contentse0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest total phenolic and flavonoid contents were attained in Bn-150 subjected to S3 treatment.”
t0“Phaseolus vulgaris L.”
Claim · model-written summary
Authors infer an antioxidant defence system, osmolytes and secondary metabolites matter in drought stress and recovery.
- Taxon
- Phaseolus vulgaris L.Phaseolus vulgarist0
- Compound
- prolinee0
- Outcome
- drought stress and recoverye0
- Qualifier
- antioxidant defence system, osmolytes (such as proline), and secondary metabolitese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These results indicated that an antioxidant defence system, osmolytes (such as proline), and secondary metabolites play important roles in common bean (Phaseolus vulgaris L) during drought stress and recovery.”
t0“Phaseolus vulgaris L.”
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