干旱压力期间小麦植物的生物化学和超结构变化
Durna R Aliyeva1, Ulduza A Gurbanova2, Fuad H Rzayev3
1Institute of Molecular Biology and Biotechnologies, Ministry of Science and Education of the Republic of Azerbaijan, Baku, AZ1073, Azerbaijan. aliyeva-1965@inbox.ru.
Biochemistry. Biokhimiia
|December 17, 2023
概括
耐干旱的小麦品种表现出增强的抗氧化酶活性和在压力下减少细胞损伤. 这些发现突出了提高作物抗旱能力的关键生理反应.
科学领域:
- 植物生理学 植物生理学
- 农作物科学 农作物科学
- 生物化学 生物化学
背景情况:
- 干旱压力会对植物生长,产量和生理功能产生负面影响.
- 了解特定品种的反应对于农业适应至关重要.
- 小麦 (Triticum aestivum) 是一个易受干旱影响的全球重要作物.
研究的目的:
- 为了比较四种本地面包小麦品种对干旱压力的生理和生化反应.
- 为了识别小麦幼苗中耐旱性标记物.
- 研究干旱对不同小麦品种细胞结构的影响.
主要方法:
- 对抗氧化酶活性 (例如,超氧化物转化酶,催化酶) 和氧化应激标记物 (甲,过氧化) 的比较分析.
- 测量可溶性蛋白质含量和和碳代谢酶的活性.
- 使用传输电子显微镜对美索菲尔细胞和叶绿体进行超结构检查.
主要成果:
- 耐旱品种 (Zirva 85,Murov 2) 与敏感品种 (Aran,Gyzyl bughda) 相比,表现出更高的抗氧化酶活性和更低的甲和过氧化水平.
- 干旱暴露的植物中可溶性蛋白质含量增加,这表明压力诱导的合成.
- 在干旱期间,Zirva 85显示和碳代谢酶活性升高.
- 超结构分析显示,耐受性栽培品种中,干旱对美索菲尔细胞和叶绿体造成的损害较小.
结论:
- 小麦品种在生理和细胞层面对干旱压力表现出不同的反应.
- 增强的抗氧化能力和减少的氧化损伤是小麦苗木耐旱能力的关键指标.
- 研究结果提供了对抗干旱机制的见解,并可以为改善小麦品种的育种策略提供信息.
更多相关视频
相关概念视频
02:41Responses to Drought and Flooding
10.7K
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.
10.7K
02:45Responses to Heat and Cold Stress
13.5K
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.
13.5K
01:57Adaptations that Reduce Water Loss
25.6K
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.
25.6K
02:02Responses to Salt Stress
13.1K
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.
13.1K
02:04Regulation of Transpiration by Stomata
28.3K
During photosynthesis, plants acquire the necessary carbon dioxide and release the produced oxygen back into the atmosphere. Openings in the epidermis of plant leaves is the site of this exchange of gasses. A single opening is called a stoma—derived from the Greek word for “mouth.” Stomata open and close in response to a variety of environmental cues.
28.3K
00:53Tonicity in Plants
53.5K
Tonicity describes the capacity of a cell to lose or gain water. It depends on the quantity of solute that does not penetrate the membrane. Tonicity delimits the magnitude and direction of osmosis and results in three possible scenarios that alter the volume of a cell: hypertonicity, hypotonicity, and isotonicity. Due to differences in structure and physiology, tonicity of plant cells is different from that of animal cells in some scenarios.
53.5K