Abstract
Effects of seed pretreatment by hydrogen peroxide (H2O2) on drought tolerance in common bean plants (Phaseolus vulgaris L.) were studied. Drought stress caused highly significant decrease in growth parameters, photosynthetic pigments, total carbohydrates and phytohormones. An increase drought stress caused highly significant increase in compatible solutes and polyamine contents as antioxidants and ABA contents in shoots of common bean plants. H2O2-pretreatment of seeds enhanced all the above parameters than the waterpretreated seeds (control) under drought condition. Results suggested that H2O2, a stress signal could trigger the activation of antioxidants in seeds which persists in the plants to alleviate the oxidative damage leading to improvements in physiological attributes for the plants growth under drought. Key words: Drought; Phaseolus vulgaris; Common bean; Advanced effect; Hydrogen peroxide DOI: http://dx.doi.org/10.3329/bjb.v40i1.8001 Bangladesh J. Bot. 40(1): 75-83, 2011 (June)
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Claims 6
Claim · model-written summary
Drought stress significantly reduced bean growth parameters, photosynthetic pigments and total carbohydrates.
- Taxon
- common bean
Phaseolus vulgarise1 - Treatment
- Drought stresse0
- Outcome
- growth parameters, photosynthetic pigments, total carbohydratese0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress caused highly significant decrease in growth parameters, photosynthetic pigments, total carbohydrates and phytohormones.”
e1“common bean plants (Phaseolus vulgaris L.)”
Claim · model-written summary
Drought stress significantly reduced phytohormones in common bean.
- Taxon
- common beanPhaseolus vulgarise1
- Treatment
- Drought stresse0
- Outcome
- phytohormonese0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress caused highly significant decrease in growth parameters, photosynthetic pigments, total carbohydrates and phytohormones.”
e1“common bean plants (Phaseolus vulgaris L.)”
Claim · model-written summary
Greater drought stress significantly increased compatible solutes and polyamine contents in bean shoots.
- Taxon
- common beanPhaseolus vulgarise0
- Treatment
- drought stresse0
- Outcome
- compatible solutes and polyamine contentse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An increase drought stress caused highly significant increase in compatible solutes and polyamine contents as antioxidants and ABA contents in shoots of common bean plants.”
Claim · model-written summary
Greater drought stress significantly increased ABA contents in bean shoots.
- Taxon
- common beanPhaseolus vulgarise0
- Treatment
- drought stresse0
- Outcome
- ABA contentse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An increase drought stress caused highly significant increase in compatible solutes and polyamine contents as antioxidants and ABA contents in shoots of common bean plants.”
Claim · model-written summary
Hydrogen peroxide seed pretreatment enhanced the measured parameters under drought relative to water pretreatment.
- Taxon
- common beanPhaseolus vulgarise1
- Treatment
- H2O2-pretreatment of seedse0
- Outcome
- all the above parameterse0
- Direction
- enhancede0
- Comparator
- waterpretreated seeds (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“H2O2-pretreatment of seeds enhanced all the above parameters than the waterpretreated seeds (control) under drought condition.”
e1“common bean plants (Phaseolus vulgaris L.)”
Claim · model-written summary
The authors proposed that hydrogen peroxide activates seed antioxidants that persist and alleviate oxidative damage.
- Taxon
- common beanPhaseolus vulgarise1
- Treatment
- H2O2e0
- Outcome
- alleviate the oxidative damagee0
- Qualifier
- activation of antioxidants in seedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“H2O2, a stress signal could trigger the activation of antioxidants in seeds which persists in the plants to alleviate the oxidative damage leading to improvements in physiological attributes for the plants growth under drought.”
e1“common bean plants (Phaseolus vulgaris L.)”
The same questions in other papers
drought · physiology: photosynthesis · Phaseolus vulgaris (common bean)Positive and negative results
39 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
38 papers more in this group
See all 42 papers →drought · physiology: hormones · Phaseolus vulgaris (common bean)Results agree
3 papers in the same direction as this paper
- negative
- negative
- no effect
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.