Abstract
ABSTRACT Polyamines are important molecules modulating numerous environment stresses in plants. In the present study, the role of putrescine (Put) in the Al tolerance of red kidney bean ( Phaseolus vulgaris ) was investigated. In roots of red kidney bean, Al stress led to a marked increase of both free Put content and Put‐biosynthetic enzymes activities, and arginine decarboxylase pathway played a predominant role in Al‐induced increase in Put accumulation. Treatment of seedlings with Put reduced Al‐induced lipid peroxidation and reactive oxygen species (ROS) generation, thus alleviating Al‐induced inhibition of root elongation and Al accumulation in root apices. On the other hand, treatment with Put biosynthesis inhibitors reduced Al‐induced Put accumulation and enhanced Al toxicity of red kidney bean. Furthermore, Put treatment inhibited Al‐induced NADPH oxidase activity in roots, while Put biosynthesis inhibitors enhanced NADPH oxidase activity under Al stress. In addition, application of NADPH oxidase inhibitor reduced Al‐induced ROS generation, suggesting that ROS generation under Al stress is mediated, at least in part, by NADPH oxidase. Taken together, these results indicate that Put plays an important role in Al tolerance of red kidney bean by inhibiting NADPH oxidase activity, thus reducing Al‐induced oxidative stress.
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Claims 13
Claim · model-written summary
Al stress increased free putrescine content in bean roots.
- Taxon
- red kidney beane0
- Organ / stage
- rootse0
- Treatment
- Al stresse0
- Outcome
- free Put contente0
- Direction
- marked increasee0
Not reportedComparator
Verbatim
e0“In roots of red kidney bean, Al stress led to a marked increase of both free Put content and Put‐biosynthetic enzymes activities”
Claim · model-written summary
Al stress increased putrescine biosynthetic enzyme activities in bean roots.
- Taxon
- red kidney beane0
- Organ / stage
- rootse0
- Treatment
- Al stresse0
- Outcome
- Put‐biosynthetic enzymes activitiese0
- Direction
- marked increasee0
Not reportedComparator
Verbatim
e0“In roots of red kidney bean, Al stress led to a marked increase of both free Put content and Put‐biosynthetic enzymes activities”
Claim · model-written summary
The arginine decarboxylase pathway predominated in aluminum-induced putrescine accumulation.
Verbatim
e0“arginine decarboxylase pathway played a predominant role in Al‐induced increase in Put accumulation.”
t0“Red Kidney Bean”
Claim · model-written summary
Put treatment reduced Al-induced lipid peroxidation in bean seedlings.
Not reportedComparator
Verbatim
e0“Treatment of seedlings with Put reduced Al‐induced lipid peroxidation and reactive oxygen species (ROS) generation”
t0“Red Kidney Bean”
Claim · model-written summary
Put treatment reduced Al-induced ROS generation.
- Taxon
- Red Kidney Beant0
- Treatment
- Pute0
- Outcome
- reactive oxygen species (ROS) generatione0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“Treatment of seedlings with Put reduced Al‐induced lipid peroxidation and reactive oxygen species (ROS) generation”
t0“Red Kidney Bean”
Claim · model-written summary
Put alleviated Al-induced inhibition of root elongation.
- Taxon
- Red Kidney Beant0
- Treatment
- Pute1
- Outcome
- Al‐induced inhibition of root elongatione0
- Direction
- alleviatinge0
Not reportedComparator
Verbatim
e0“thus alleviating Al‐induced inhibition of root elongation and Al accumulation in root apices.”
e1“Treatment of seedlings with Put reduced Al‐induced lipid peroxidation”
t0“Red Kidney Bean”
Claim · model-written summary
Put alleviated Al accumulation in root apices.
Not reportedComparator
Verbatim
e0“thus alleviating Al‐induced inhibition of root elongation and Al accumulation in root apices.”
e1“Treatment of seedlings with Put reduced Al‐induced lipid peroxidation”
t0“Red Kidney Bean”
Claim · model-written summary
Put biosynthesis inhibitors reduced Al-induced Put accumulation.
- Taxon
- red kidney beane0
- Treatment
- Put biosynthesis inhibitorse0
- Outcome
- Al‐induced Put accumulatione0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“treatment with Put biosynthesis inhibitors reduced Al‐induced Put accumulation and enhanced Al toxicity of red kidney bean.”
Claim · model-written summary
Put biosynthesis inhibitors enhanced Al toxicity in bean.
Not reportedComparator
Verbatim
e0“treatment with Put biosynthesis inhibitors reduced Al‐induced Put accumulation and enhanced Al toxicity of red kidney bean.”
Claim · model-written summary
Put treatment inhibited Al-induced NADPH oxidase activity in roots.
- Taxon
- Red Kidney Beant0
- Organ / stage
- rootse0
- Treatment
- Put treatmente0
- Outcome
- Al‐induced NADPH oxidase activitye0
- Direction
- inhibitede0
Not reportedComparator
Verbatim
e0“Put treatment inhibited Al‐induced NADPH oxidase activity in roots”
t0“Red Kidney Bean”
Claim · model-written summary
Put biosynthesis inhibitors enhanced NADPH oxidase activity under Al stress.
- Taxon
- Red Kidney Beant0
- Treatment
- Put biosynthesis inhibitorse0
- Outcome
- NADPH oxidase activitye0
- Direction
- enhancede0
- Qualifier
- under Al stresse0
Not reportedComparator
Verbatim
e0“Put biosynthesis inhibitors enhanced NADPH oxidase activity under Al stress.”
t0“Red Kidney Bean”
Claim · model-written summary
A NADPH oxidase inhibitor reduced Al-induced ROS generation.
- Taxon
- Red Kidney Beant0
- Treatment
- NADPH oxidase inhibitore0
- Outcome
- Al‐induced ROS generatione0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“application of NADPH oxidase inhibitor reduced Al‐induced ROS generation”
t0“Red Kidney Bean”
Claim · model-written summary
The authors infer NADPH oxidase partly mediates ROS generation under Al stress.
Verbatim
e0“suggesting that ROS generation under Al stress is mediated, at least in part, by NADPH oxidase.”
t0“Red Kidney Bean”
The same questions in other papers
aluminium atom · physiology: enzyme activity · Phaseolus vulgaris (common bean)Results differ
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- negative
putrescine · molecular: metabolites · Phaseolus vulgaris (common bean)Results differ
3 papers in the same direction as this paper · 1 in the opposite direction
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1 paper more in this group
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1 paper in the same direction as this paper · 1 in the opposite direction
- positive
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putrescine · disease · Phaseolus vulgaris (common bean)Results agree
1 paper in the same direction as this paper
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putrescine · physiology: enzyme activity · Phaseolus vulgaris (common bean)Results agree
1 paper in the same direction as this paper
- positive
putrescine · physiology: oxidative · Phaseolus vulgaris (common bean)Results agree
2 papers in the same direction as this paper
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heavy metal · molecular: metabolites · Phaseolus vulgaris (common bean)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
heavy metal · physiology: enzyme activity · Phaseolus vulgaris (common bean)Results agree
1 paper in the same direction as this paper
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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.