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代谢适应导致在盐度应激下小麦根的增强化

Bhagya M Dissanayake¹, Christiana Staudinger^2,3, Kosala Ranathunge⁴

¹School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Perth, 6009, Australia.

The Plant journal : for cell and molecular biology

|June 26, 2024

概括

小麦根对盐度应激有不同的反应,影响细胞壁的化和改善盐分耐受性. 了解这些根层机制对于开发弹性作物至关重要.

科学领域:

植物生物学植物生物学
农业学是一种农业学.
分子生物学分子生物学

背景情况:

小麦的盐度耐受性主要侧重于芽盐的排除,忽视了根层面的适应性.
根类表型及其对盐度的分子反应仍未得到充分探索.
了解根部反应是提高小麦对盐应激应力的关键.

研究的目的:

研究不同面包小麦品种对盐度压力的表型和分子反应.
评估根细胞壁对小麦的盐分耐受性起的作用.
提供小麦根适应机制在盐度下的综合视图.

主要方法:

对四种面包小麦品种进行比较分析,它们具有不同的盐分耐受度.
根基体化学分析,离子度测量,差异蛋白质组学和向代谢学.
评估根细胞壁的木质化及其与盐分耐受性的相关性.

主要成果:

在能量转化和初级代谢中观察到的基因型和治疗依赖的代谢重组.
甲路径的变化导致根结石化程度和局部性的变化.
改变根的木质化和改善应对盐度压力的能力之间的相关性.

结论:

根细胞壁的线性化是小麦对盐度应激反应的关键因素.
小麦根中的代谢调整有助于提高盐分耐受性.
准根系表型为培育耐盐小麦品种提供了一个有前途的策略.

关键词:

面包麦子小麦面包化过程中的化.蛋白质组学蛋白质组学根根根根根根不包括盐的除外.组织耐受性组织耐受性

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相关概念视频

Responses to Salt Stress

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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

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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

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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

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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.

Tonicity in Plants

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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.

Water and Mineral Acquisition

Water and Mineral Acquisition

Specialized tissues in plant roots have evolved to capture water, minerals, and some ions from the soil. Roots exhibit a variety of branching patterns that facilitate this process. The outermost root cells have specialized structures called root hairs that increase the root surface, thus increasing soil contact. Water can passively cross into roots, as the concentration of water in the soil is higher than that of the root tissue. Minerals, in contrast, are actively transported into root cells.