Abstract
The escalating global temperatures associated with climate change are detrimental to plant growth and development, leading to significant reductions in crop yields worldwide. Our research demonstrates that salicylic acid (SA), a phytohormone known for its growth-promoting properties, is crucial in enhancing heat tolerance in cotton (Gossypium hirsutum). This enhancement is achieved through modifications in various biochemical, physiological, and growth parameters. Under heat stress, cotton plants typically show significant growth disturbances, including leaf wilting, stunted growth, and reduced biomass. However, priming cotton plants with 1 mM SA significantly mitigated these adverse effects, evidenced by increases in shoot dry mass, leaf-water content, and chlorophyll concentrations in the heat-stressed plants. Heat stress also prompted an increase in hydrogen peroxide levels—a key reactive oxygen species—resulting in heightened electrolyte leakage and elevated malondialdehyde concentrations, which indicate severe impacts on cellular membrane integrity and oxidative stress. Remarkably, SA treatment significantly reduced these oxidative stresses by enhancing the activities of critical antioxidant enzymes, such as catalase, glutathione S-transferase, and ascorbate peroxidase. Additionally, the elevated levels of total soluble sugars in SA-treated plants enhanced osmotic regulation under heat stress. Overall, our findings reveal that SA-triggered protective mechanisms not only preserve photosynthetic pigments but also ameliorate oxidative stress and boost plant resilience in the face of elevated temperatures. In conclusion, the application of 1 mM SA is highly effective in enhancing heat tolerance in cotton and is recommended for field trials before being commercially used to improve crop resilience under increasing global temperatures.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 5
Claim · model-written summary
Salicylic acid priming increased shoot dry mass, leaf water content, and chlorophyll under heat stress.
- Taxon
- cotton
Gossypium hirsutume0 - Treatment
- 1 mM SAe0
- Outcome
- shoot dry mass, leaf-water content, and chlorophyll concentrationse0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“priming cotton plants with 1 mM SA significantly mitigated these adverse effects, evidenced by increases in shoot dry mass, leaf-water content, and chlorophyll concentrations in the heat-stressed plants”
Claim · model-written summary
Heat stress increased hydrogen peroxide, electrolyte leakage, and malondialdehyde in cotton.
Not reportedTaxon
Verbatim
e0“Heat stress also prompted an increase in hydrogen peroxide levels—a key reactive oxygen species—resulting in heightened electrolyte leakage and elevated malondialdehyde concentrations”
Claim · model-written summary
SA treatment reduced oxidative stress and enhanced antioxidant enzyme activities.
- Treatment
- SA treatmente0
- Gene
- catalase, glutathione S-transferase, and ascorbate peroxidasee0
- Outcome
- oxidative stressese0
- Direction
- reducede0
Not reportedTaxonComparator
Verbatim
e0“SA treatment significantly reduced these oxidative stresses by enhancing the activities of critical antioxidant enzymes, such as catalase, glutathione S-transferase, and ascorbate peroxidase”
Claim · model-written summary
SA-treated plants had elevated total soluble sugars that enhanced osmotic regulation.
Not reportedTaxon
Verbatim
e0“the elevated levels of total soluble sugars in SA-treated plants enhanced osmotic regulation under heat stress”
Claim · model-written summary
The authors recommend field trials of 1 mM SA for cotton heat tolerance.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- 1 mM SAe0
- Outcome
- recommended for field trialse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of 1 mM SA is highly effective in enhancing heat tolerance in cotton and is recommended for field trials”
The same questions in other papers
salicylic acid · physiology: water · Gossypium hirsutum (cotton)Results agree
3 papers in the same direction as this paper
- positive
- 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.