挥发性甲会诱导大米 (Oryza sativa) 根中的系统盐耐受性
Chung-Chih Huang1, Yun-Ting Lee1, Thach-Thao Ly2
1Department of Life Sciences, National Cheng Kung University, Tainan, Taiwan.
Physiologia plantarum
|May 27, 2023
概括
肉甲蒸气有助于米根通过增强素和改变离子平衡,减少损伤,耐受盐应激. 这一发现为改善作物在气候变化中的弹性提供了新的策略.
科学领域:
- 植物科学 植物科学
- 农业科学 农业科学
- 环境科学 环境科学
背景情况:
- 丁甲 (CA) 是一种具有已知的抗病原性质的植物代谢物.
- 它对植物对非生物应激 (如盐度) 的耐受性的影响基本上是未知的.
- 米 (Oryza Sativa L cv. 其他) (TNG67) 是面临盐度挑战的关键作物.
研究的目的:
- 调查甲 (CA) 雾化对大米根对盐度压力的耐受性的影响.
- 了解CA诱导的米压力减轻的潜在机制.
主要方法:
- 米根被暴露在200mM NaCl盐度压力中,有或没有CA烟雾化.
- 测量包括活性氧物种 (ROS) 积累,细胞死亡,林水平,Na+/K+比,以及抗氧化酶 (POD,CAT,SOD) 的活性.
主要成果:
- 在根中,CA蒸显著降低了盐度诱导的ROS积累和细胞死亡.
- CA治疗导致了快速的普林积累,并在3小时内降低了Na+/K+比率.
- 过氧化酶 (POD) 的活性随着CA烟雾化而下降,而酶 (CAT) 和超氧化物脱酶 (SOD) 的活性没有受到影响.
结论:
- 甲蒸汽可以培养大米根,以提高对度压力的耐受性.
- 保护作用与氨酸代谢和离子稳态有关.
- 这项研究首次证明了CA在调节盐度压力大米根中的元素组成和抗氧化因子中的作用.
更多相关视频
相关概念视频
Responses to Salt Stress
13.2K
Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
13.2K
Responses to Drought and Flooding
10.8K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
10.8K
Responses to Heat and Cold Stress
13.6K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.6K
Adaptations that Reduce Water Loss
25.8K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
25.8K
C4 Pathway and CAM
45.7K
Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
C4 Pathway
The C4 pathway is used by plants such as...
C4 Pathway
The C4 pathway is used by plants such as...
45.7K
Tonicity in Plants
30.9K
Plant cells maintain appropriate osmotic balance in extreme conditions. For instance, plants in dry environments store water in vacuoles, limit the opening of their stoma, and have thick, waxy cuticles to prevent unnecessary water loss. Some species of plants that live in salty environments store salt in their roots. As a result, water osmosis occurs in the root from the surrounding soil.
Tonicity
Tonicity describes the capacity of a cell to lose or gain water depending on the solute...
Tonicity
Tonicity describes the capacity of a cell to lose or gain water depending on the solute...
30.9K


