在盐水条件下通过调节玉米生长,代谢反应和抗氧化机制
Muhammad Saad Ullah1, Athar Mahmood2, Hussam F Najeeb Alawadi3
1Department of Botany, University of Agriculture Faisalabad, Faisalabad, 38000, Pakistan.
BMC plant biology
|January 3, 2025
概括
外源 (Si) 应用通过改善生理特征和降低盐度应激下 (Na+) 吸收来增强玉米盐耐药性. 能增强抗氧化酶和叶绿素含量,减轻盐应激的负面影响.
科学领域:
- 农业科学 农业科学
- 植物生理学 植物生理学
- 生物化学 生化学
背景情况:
- 土壤盐度对全球作物生产构成重大威胁,导致易受植物生理异常和生长停止.
- 了解 (Si) 等基本元素在减轻盐应激中的作用,对于开发弹性作物至关重要.
研究的目的:
- 研究外源 (Si) 在不同盐度条件下对玉米 (Zea mays) 的生长和耐盐性的影响.
- 确定如何影响受化 (NaCl) 压力的玉米中的关键生理指标和生物化学途径.
主要方法:
- 玉米是在充满沙子的中种植的,使用受控的 (0-8 mM) 和盐应激 (0-120 mM NaCl) 处理.
- 测量包括叶绿素含量,抗氧化酶活性 (SOD,POD,CAT),二次代谢物水平 (,黄,素) 和Na+吸收.
主要成果:
- 盐应激显著降低了叶绿素含量和抗氧化酶活性,但增加了二次代谢物.
- 在盐应激下应用降低了Na+的吸收,并显著增强了抗氧化酶 (SOD,POD,CAT) 和叶绿素含量,特别是在8mMSi.
- 的应用对生长和生理特征产生了积极的影响,减轻了盐度的影响.
结论:
- 外源的应用通过改善生理参数和减少吸收,有效地提高了玉米盐的抗性.
- 的应用有助于植物通过调节二次代谢物和增强抗氧化剂防御机制来应对盐度压力.
相关概念视频
Responses to Salt Stress
12.8K
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.
12.8K
Adaptations that Reduce Water Loss
25.0K
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.
25.0K
Key Elements for Plant Nutrition
18.5K
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
18.5K
Responses to Drought and Flooding
10.5K
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.
10.5K
Tonicity in Plants
26.0K
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...
26.0K
Responses to Heat and Cold Stress
13.2K
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.
13.2K


