植物的氧化还原代码
Ron Mittler1,2, Dean P Jones3
1Division of Plant Science and Technology, College of Agriculture Food and Natural Resources and Interdisciplinary Plant Group, University of Missouri, Columbia, Missouri, USA.
Plant, cell & environment
|December 13, 2023
概括
基于细胞的氧化还原状态和反应性氧物种的氧化还原代码解释了植物信号. 这一框架对于了解植物对气候变化等环境变化的反应至关重要.
科学领域:
- 生物化学 生物化学
- 植物生理学 植物生理学
- 细胞生物学 细胞生物学
背景情况:
- 中央新陈代谢依赖于尼古丁胺氨酸二核酸 (NAD+/NADH) 和NADP+/NADPH系统.
- 像H2O2这样的活性氧物种 (ROS) 通过氧化还原蛋白质组将新陈代谢与细胞调节联系起来.
- "redox代码"描述了动态ROS变化如何调节细胞功能.
研究的目的:
- 将"redox代码"原则应用于植物系统.
- 解释植物中细胞对细胞和植物对植物的信号使用氧化还原代码.
- 突显氧化还原代码在了解植物对环境压力的反应方面的重要性.
主要方法:
- 关于植物中氧化还原信号的最新研究的审查和综合.
- 已建立的"redox代码"框架应用于植物生理学.
- 分析氧化还原稳态如何影响植物发育和环境反应.
主要成果:
- 氧化还原代码有效地解释了植物中的各种信号传递过程,从亚细胞到生态系统水平.
- 植物对植物和细胞对细胞的通信可以通过氧化还原信号来理解.
- 氧化还原代码为植物生物过程提供了一个统一的框架.
结论:
- 氧化还原代码是一个基本原则,适用于包括植物在内的生物系统.
- 了解植物氧化还原信号对于应对环境挑战至关重要.
- 未来的研究应该专注于将氧化还原代码应用于植物对全球变暖,气候变化和污染的反应.
相关概念视频
01:23Redox Equilibria: Overview
564
A reduction-oxidation reaction is commonly called a redox reaction. In a redox reaction, electrons are transferred from one species to another rather than being shared between or among atoms. The reducing agent or reductant is the species that loses electrons and gets oxidized in the process. The species that gains electrons and gets reduced in the process is the oxidizing agent or oxidant. Redox reactions are represented as two separate equations called half-reactions, where one equation...
564
01:19Oxidation and Reduction of Organic Molecules
6.6K
Energy production within a cell involves many coordinated chemical pathways. Most of these pathways are combinations of oxidation and reduction reactions, which occur at the same time. An oxidation reaction strips an electron from an atom in a compound, and the addition of this electron to another compound is a reduction reaction. Because oxidation and reduction usually occur together, these pairs of reactions are called redox reactions.
The removal of an electron from a molecule, results in a...
The removal of an electron from a molecule, results in a...
6.6K
03:11Oxidation-Reduction Reactions
65.0K
Oxidation–Reduction Reactions
65.0K
01:34The Z-Scheme of Electron Transport in Photosynthesis
10.2K
The light reactions of photosynthesis assume a linear flow of electrons from water to NADP+. During this process, light energy drives the splitting of water molecules to produce oxygen. However, oxidation of water molecules is a thermodynamically unfavorable reaction and requires a strong oxidizing agent. This is accomplished by the first product of light reactions: oxidized P680 (or P680+), the most powerful oxidizing agent known in biology. The oxidized P680 that acquires an electron from the...
10.2K
02:58Balancing Redox Equations
52.3K
Electrochemistry is the science involved in the interconversion of electrical and chemical reactions. Such reactions are called reduction-oxidation, or redox reactions. These important reactions are defined by changes in oxidation states for one or more reactant elements and include a subset of reactions involving the transfer of electrons between reactant species. Electrochemistry as a field has evolved to yield sufficient insights on the fundamental principles of redox chemistry and multiple...
52.3K
01:46The Calvin Benson Cycle
4.6K
Ribulose 1,5- bisphosphate carboxylase/oxygenase (RuBisCo) is a critical enzyme that catalyzes carbon dioxide assimilation during photosynthesis. However, it is an inefficient enzyme, having an extremely slow catalytic rate. A typical enzyme can process about a thousand molecules per second; however, RuBisCo fixes only around three-carbon dioxides per second. Photosynthetic cells compensate for this slow rate by synthesizing very high amounts of RuBisCo, making it the most abundant single...
4.6K