相关实验视频

Updated: Jul 17, 2025

Measuring Spatial and Temporal Ca2+ Signals in Arabidopsis Plants

Measuring Spatial and Temporal Ca2+ Signals in Arabidopsis Plants

Published on: September 2, 2014

外源诱导了不同的液压策略,以应对玉米幼苗的奥斯莫斯压力

Dongyang Li^1,2, Minfei Yan¹, Haofeng Liang¹

¹State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, China.

Plants (Basel, Switzerland)

|September 1, 2023

概括

补充对玉米抗旱能力的影响不同,短期和长期不同. 短期的会增加水的吸收,而长期的会减少水的流失,从而提高整体的耐力.

科学领域:

植物生理学植物生理学
植物压力生物学植物压力生物学
农业科学农业科学

背景情况:

无生物应激显著影响植物生理学,需要对信号分子进行研究.
(Ca) 在植物应激反应中起到关键的第二信使作用,但其在通过外部应用中介干旱耐受性的作用尚未完全理解.
了解对植物液压系统的影响对于提高作物弹性至关重要.

研究的目的:

为了研究外源对水平衡和水力特性在透应激下玉米苗木的影响.
区分短期和长期治疗对植物对干旱生理反应的影响.
阐明参与介导干旱耐受性的信号通路,包括酸 (ABA) 和过氧化 (H2O2).

主要方法:

在水培培养中使用10%的PEG-6000对玉米幼苗 (Zea mays L.) 进行了透应激.
外源性治疗 (10mM CaCl2) 用于短期 (2h) 和长期 (10d) 持续时间.
测量包括气体交换参数 (光合作用速率,透气速率,口腔导电性),叶子水含量,根水吸收以及ABA和H2O2.2水平.

主要成果:

透应激显著降低了光合作用速率,透气,口腔导电性,叶子含水量和根水吸收.
短期治疗通过抑制ABA合成和增加根液压导电性,增强了透气和根水吸收.
长期的处理导致ABA和H2O2的积累,抑制汗流和提高水运输效率,从而减少水损失和改善应激耐受性.

结论:

外源不同调节玉米苗对透应激的反应,这取决于治疗的持续时间.
短期的应用增强了吸水机制,而长期的应用改善了节水策略.
肥的战略应用可以减轻干旱对作物产量的负面影响.

关键词:

阿布西斯酸是一种酸性酸.这是一种水素 (aquaporin).和是最重要的.过氧化是一种过氧化.根部液压导电性根部液压导电性整个植物的水平衡.

更多相关视频

Measuring the Osmotic Water Permeability Coefficient Pf of Spherical Cells: Isolated Plant Protoplasts as an Example

Measuring the Osmotic Water Permeability Coefficient Pf of Spherical Cells: Isolated Plant Protoplasts as an Example

Published on: October 8, 2014

Imaging and Analysis for Quantifying Maize (Zea mays) Abiotic Stress Phenotypes

Imaging and Analysis for Quantifying Maize (Zea mays) Abiotic Stress Phenotypes

Published on: March 28, 2025

相关概念视频

Responses to Salt Stress

Responses to Salt Stress

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.

Responses to Drought and Flooding

Responses to Drought and Flooding

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.

Adaptations that Reduce Water Loss

Adaptations that Reduce Water Loss

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.

Responses to Heat and Cold Stress

Responses to Heat and Cold Stress

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.

Feedback Regulation of Calcium Concentration

Feedback Regulation of Calcium Concentration

Calcium is an essential signaling molecule required for various cellular functions. Calcium pumps and ion channels on cell and organellar membranes, such as those on the endoplasmic reticulum (ER), regulate calcium concentrations inside the cell. They remain closed, keeping the cytosolic calcium levels low at a resting state.
Various transmembrane receptors, such as G protein-coupled receptors (GPCRs), elicit a response to extracellular signals by increasing cytosolic calcium. Activated GPCRs...

Tonicity in Plants

Tonicity in Plants

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.