Abstract
Cadmium (Cd) contamination in agricultural soils is increasing due to anthropogenic activities, posing a significant threat to plant growth and productivity. Phosphorus (P) has been suggested as a potential mitigator of Cd toxicity, yet the role of cotton genotypes with contrasting low-P tolerance in contaminated soils remains largely unexplored. A hydroponic experiment was conducted to assess the effects of Cd stress (5 μM) on Jimian169 (strong-low-P tolerant) and DES926 (weak-low-P tolerant) cotton genotypes under low-P (0.01 mM KH2PO4) and normal P (1 mM KH2PO4) conditions. The results revealed that Cd stress, especially under low-P, significantly reduced plant growth, dry matter, photosynthetic rate, and P use efficiency (PUE), while increasing oxidative damage through increased malonaldehyde levels and reactive oxygen species accumulation. These adverse impacts were very much evident in DES926 compared to Jimian169. In contrast, Jimian169 demonstrated greater resilience to Cd stress by mitigating oxidative damage through enhanced antioxidant enzyme activity, improved photosynthetic performance, and increased accumulation of osmoprotectants. These findings indicate that Jimian169 can better withstand Cd toxicity by enhancing photosynthesis, antioxidant defense mechanisms, and osmotic adjustment. This makes them a promising candidate for cultivation in Cd-contaminated, P-deficient soils.
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Claims 9
Claim · model-written summary
Cadmium stress, especially under low phosphorus, significantly reduced plant growth and dry matter.
- Taxon
- Cotton
Gossypium hirsutumt0 - Treatment
- Cd stresse0
- Outcome
- plant growth, dry mattere0
- Direction
- reducede0
- Qualifier
- especially under low-Pe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cd stress, especially under low-P, significantly reduced plant growth, dry matter, photosynthetic rate, and P use efficiency (PUE)”
t0“Cotton”
Claim · model-written summary
Cadmium stress, especially under low phosphorus, significantly reduced photosynthetic rate.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Cd stresse0
- Outcome
- photosynthetic ratee0
- Direction
- reducede0
- Qualifier
- especially under low-Pe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cd stress, especially under low-P, significantly reduced plant growth, dry matter, photosynthetic rate, and P use efficiency (PUE)”
t0“Cotton”
Claim · model-written summary
Cadmium stress, especially under low phosphorus, significantly reduced phosphorus use efficiency.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Cd stresse0
- Outcome
- P use efficiency (PUE)e0
- Direction
- reducede0
- Qualifier
- especially under low-Pe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cd stress, especially under low-P, significantly reduced plant growth, dry matter, photosynthetic rate, and P use efficiency (PUE)”
t0“Cotton”
Claim · model-written summary
Cadmium stress increased malonaldehyde levels and reactive oxygen species accumulation.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Cadmium Stresst0
- Outcome
- malonaldehyde levels and reactive oxygen species accumulatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while increasing oxidative damage through increased malonaldehyde levels and reactive oxygen species accumulation.”
t0“Cadmium Stress in Cotton”
Claim · model-written summary
The adverse cadmium effects were more evident in DES926 than Jimian169.
- Taxon
- CottonGossypium hirsutumt0
- Material
- DES926e0
- Outcome
- adverse impactse0
- Comparator
- Jimian169e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These adverse impacts were very much evident in DES926 compared to Jimian169.”
t0“Cotton”
Claim · model-written summary
Jimian169 showed greater cadmium resilience through enhanced antioxidant enzyme activity.
- Taxon
- CottonGossypium hirsutumt0
- Material
- Jimian169e0
- Outcome
- antioxidant enzyme activitye0
- Direction
- enhancede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Jimian169 demonstrated greater resilience to Cd stress by mitigating oxidative damage through enhanced antioxidant enzyme activity”
t0“Cotton”
Claim · model-written summary
Jimian169 showed improved photosynthetic performance under cadmium stress.
- Taxon
- CottonGossypium hirsutumt0
- Material
- Jimian169e1
- Outcome
- photosynthetic performancee0
- Direction
- improvede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“improved photosynthetic performance”
e1“Jimian169 demonstrated greater resilience to Cd stress”
t0“Cotton”
Claim · model-written summary
Jimian169 accumulated more osmoprotectants under cadmium stress.
- Taxon
- CottonGossypium hirsutumt0
- Material
- Jimian169e1
- Outcome
- accumulation of osmoprotectantse0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased accumulation of osmoprotectants”
e1“Jimian169 demonstrated greater resilience to Cd stress”
t0“Cotton”
Claim · model-written summary
The authors consider Jimian169 promising for cultivation in cadmium-contaminated, phosphorus-deficient soils.
- Taxon
- CottonGossypium hirsutumt0
- Material
- Jimian169e1
- Outcome
- promising candidate for cultivation in Cd-contaminated, P-deficient soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This makes them a promising candidate for cultivation in Cd-contaminated, P-deficient soils.”
e1“Jimian169 can better withstand Cd toxicity”
t0“Cotton”
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