Abstract
Cotton (Gossypium hirsutum L.) plants produce more ethylene when subjected to abiotic stresses, such as high temperatures and drought, which result in premature leaf senescence, reduced photosynthetic efficiency, and thus decreased yield. This study was conducted to test the hypothesis that the ethylene-inhibiting compound 1-methylcyclopropene (1-MCP) treatment of cotton plants can delay leaf senescence under high temperature, drought, and the aging process in controlled environmental conditions. Potted cotton plants were exposed to 1-MCP treatment at the early square stage of development. The protective effect of 1-MCP against membrane damage was found on older compared to younger leaves, indicating 1-MCP could lower the stress level caused by aging. Application of 1-MCP resulted in reduction of lipid peroxidation, membrane leakage, soluble sugar content, and increased chlorophyll content, in contrast to the untreated plants under heat stress, suggesting that 1-MCP treatment of cotton plants may also have the potential to reduce the effect of heat stress in terms of delayed senescence. Application of 1-MCP caused reductions of lipid peroxidation, membrane leakage, and soluble sugar content, together with increases in water use efficiency (WUE), water potential, chlorophyll content, and fluorescence quantum efficiency, compared to the untreated plants under drought, suggesting that 1-MCP treatment of cotton plants may also have the ability to reduce the level of stress under drought conditions. In conclusion, 1-MCP treatment of cotton should have the potential to delay senescence under heat and drought stress, and the aging process. Additionally, 1-MCP is more effective under stress than under non-stress conditions.
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Claims 8
Claim · model-written summary
1-MCP protected older cotton leaves against membrane damage more than younger leaves.
- Taxon
- cotton plants
Gossypium hirsutumt0 - Organ / stage
- oldere0
- Treatment
- 1-MCPe0
- Outcome
- membrane damagee0
- Direction
- protective effecte0
- Comparator
- younger leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The protective effect of 1-MCP against membrane damage was found on older compared to younger leaves”
t0“cotton plants”
Claim · model-written summary
Under heat stress, 1-MCP reduced lipid peroxidation, membrane leakage, and soluble sugar content versus untreated plants.
- Taxon
- cotton plantsGossypium hirsutumt0
- Treatment
- 1-MCPe0
- Outcome
- lipid peroxidation, membrane leakage, soluble sugar contente0
- Direction
- reductione0
- Qualifier
- under heat stresse0
- Comparator
- untreated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 1-MCP resulted in reduction of lipid peroxidation, membrane leakage, soluble sugar content, and increased chlorophyll content, in contrast to the untreated plants under heat stress”
t0“cotton plants”
Claim · model-written summary
Under heat stress, 1-MCP increased chlorophyll content versus untreated plants.
- Taxon
- cotton plantsGossypium hirsutumt0
- Outcome
- chlorophyll contente0
- Direction
- increasede0
- Qualifier
- under heat stresse0
- Comparator
- untreated plantse0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased chlorophyll content, in contrast to the untreated plants under heat stress”
t0“cotton plants”
Claim · model-written summary
Under drought, 1-MCP reduced lipid peroxidation, membrane leakage, and soluble sugar content versus untreated plants.
- Taxon
- cotton plantsGossypium hirsutumt0
- Treatment
- 1-MCPe0
- Outcome
- lipid peroxidation, membrane leakage, and soluble sugar contente0
- Direction
- reductionse0
- Qualifier
- under droughte0
- Comparator
- untreated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 1-MCP caused reductions of lipid peroxidation, membrane leakage, and soluble sugar content, together with increases in water use efficiency (WUE), water potential, chlorophyll content, and fluorescence quantum efficiency, compared to the untreated plants under drought”
t0“cotton plants”
Claim · model-written summary
Under drought, 1-MCP increased water use efficiency, water potential, and chlorophyll content versus untreated plants.
- Taxon
- cotton plantsGossypium hirsutumt0
- Treatment
- 1-MCPe0
- Outcome
- water use efficiency (WUE), water potential, chlorophyll contente0
- Direction
- increasese0
- Qualifier
- under droughte0
- Comparator
- untreated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 1-MCP caused reductions of lipid peroxidation, membrane leakage, and soluble sugar content, together with increases in water use efficiency (WUE), water potential, chlorophyll content, and fluorescence quantum efficiency, compared to the untreated plants under drought”
t0“cotton plants”
Claim · model-written summary
Under drought, 1-MCP increased fluorescence quantum efficiency versus untreated plants.
- Taxon
- cotton plantsGossypium hirsutumt0
- Treatment
- 1-MCPe0
- Outcome
- fluorescence quantum efficiencye0
- Direction
- increasese0
- Qualifier
- under droughte0
- Comparator
- untreated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 1-MCP caused reductions of lipid peroxidation, membrane leakage, and soluble sugar content, together with increases in water use efficiency (WUE), water potential, chlorophyll content, and fluorescence quantum efficiency, compared to the untreated plants under drought”
t0“cotton plants”
Claim · model-written summary
The authors conclude that 1-MCP has potential to delay cotton senescence under heat, drought, and aging.
- Taxon
- cotton plantsGossypium hirsutumt0
- Treatment
- 1-MCPe0
- Outcome
- delay senescencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1-MCP treatment of cotton should have the potential to delay senescence under heat and drought stress, and the aging process”
t0“cotton plants”
Claim · model-written summary
1-MCP was more effective under stress than nonstress conditions.
- Taxon
- cotton plantsGossypium hirsutumt0
- Treatment
- 1-MCPe0
- Outcome
- more effectivee0
- Direction
- more effectivee0
- Comparator
- non-stress conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1-MCP is more effective under stress than under non-stress conditions”
t0“cotton plants”
The same questions in other papers
1-methylcyclopropene · physiology: oxidative · Gossypium hirsutum (cotton)Results differ
4 papers in the same direction as this paper · 3 in the opposite direction
- positive
- no effect
- no effect
4 papers more in this group
See all 8 papers →1-methylcyclopropene · physiology: photosynthesis · Gossypium hirsutum (cotton)Positive and negative results
7 papers in the same direction as this paper · 2 in the opposite direction
- positive
- no effect
- no effect
6 papers more in this group
See all 10 papers →1-methylcyclopropene · physiology: water · Gossypium hirsutum (cotton)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.