Short‐Term Soil Waterlogging Improves Cotton Tolerance to High Temperature by Triggering Antioxidant Defence System in Cotton Seedlings DOI
Haimiao Wang, Li Huang,

Pan Yang

et al.

Journal of Agronomy and Crop Science, Journal Year: 2024, Volume and Issue: 210(4)

Published: June 18, 2024

ABSTRACT Soil waterlogging and high temperature (HT) are serious abiotic stresses that negatively affect cotton growth yield. Yet effects of prewaterlogging to HT subsequently in seedlings have not been obtained. To address this, two conditions (30/20°C 35/25°C) soil levels (0 3 days) were established during the seedling stage. Results showed indexes plant performance decreased markedly under HT. Unexpectedly, for treatment combined with days (HW) was better than (specifically, increase 7.9%, 9.0%, 10.2%, 5.4% 4.6% leaf area, height, belowground biomass, aboveground biomass root‐to‐shoot ratio detected). Decreases MDA (malondialdehyde), H 2 O (hydrogen peroxide) contents (superoxide radicals) generation rate HW observed by 14.1%, 7.7% respectively, compared Moreover, ASA (ascorbic acid) content DHAR (dehydroascorbate reductase) activity improved 19.7% 13.8% relative HT, however, opposite situation activities APX (ascorbate peroxidase) GR (glutathione reductase). Besides, SOD dismutase), CAT (catalase) POD (peroxidase) increased 16.7%, 8.3% 18.4%, separately. Thus, we concluded short‐term cross‐tolerance continued high‐HT stress enhanced SOD, CAT, activities, seedlings. These results expected provide a theoretical basis understanding cotton's stress.

Language: Английский

Short‐Term Soil Waterlogging Improves Cotton Tolerance to High Temperature by Triggering Antioxidant Defence System in Cotton Seedlings DOI
Haimiao Wang, Li Huang,

Pan Yang

et al.

Journal of Agronomy and Crop Science, Journal Year: 2024, Volume and Issue: 210(4)

Published: June 18, 2024

ABSTRACT Soil waterlogging and high temperature (HT) are serious abiotic stresses that negatively affect cotton growth yield. Yet effects of prewaterlogging to HT subsequently in seedlings have not been obtained. To address this, two conditions (30/20°C 35/25°C) soil levels (0 3 days) were established during the seedling stage. Results showed indexes plant performance decreased markedly under HT. Unexpectedly, for treatment combined with days (HW) was better than (specifically, increase 7.9%, 9.0%, 10.2%, 5.4% 4.6% leaf area, height, belowground biomass, aboveground biomass root‐to‐shoot ratio detected). Decreases MDA (malondialdehyde), H 2 O (hydrogen peroxide) contents (superoxide radicals) generation rate HW observed by 14.1%, 7.7% respectively, compared Moreover, ASA (ascorbic acid) content DHAR (dehydroascorbate reductase) activity improved 19.7% 13.8% relative HT, however, opposite situation activities APX (ascorbate peroxidase) GR (glutathione reductase). Besides, SOD dismutase), CAT (catalase) POD (peroxidase) increased 16.7%, 8.3% 18.4%, separately. Thus, we concluded short‐term cross‐tolerance continued high‐HT stress enhanced SOD, CAT, activities, seedlings. These results expected provide a theoretical basis understanding cotton's stress.

Language: Английский

Citations

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