Redox regulation in shoot growth, SAM maintenance and flowering.
Redox regulation in shoot growth, SAM maintenance and flowering.
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DOI：
10.1016/j.pbi.2015.11.009
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发表时间：
2016-02
影响因子：
9.5
通讯作者：
Jos H. M. Schippers;C. Foyer;Joost T. van Dongen
中科院分区：
文献类型：
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作者：
Jos H. M. Schippers;C. Foyer;Joost T. van Dongen
植物细胞周期是由氧化还原控制的。巯基开关的酶促调控是氧和活性氧信号传导的基本概念。活性氧信号的特异性由靶蛋白中的巯基开关提供。活性氧（ROS）和相关的还原/氧化（氧化还原）控制涉及谷胱甘肽，谷氧还蛋白和硫氧还蛋白在调节植物生长和发育中起关键作用。尽管关于茎顶端分生组织（SAM）的氧化还原功能仍存在许多问题，但越来越多的证据表明，氧化还原主开关整合了SAM中的主要激素信号和转录网络，从而调节器官生长、极性和花发育。生长素诱导的位于质膜的NADPH氧化酶的活化和线粒体呼吸生物能量学可能是ROS爆发的调节剂，其驱动增殖区域中的细胞周期，其他激素如茉莉酸在基因调节中发挥增殖或拮抗作用。此外，通过光合作用和氧依赖性N-末端规则控制的氧产生的活化与从细胞增殖到细胞扩增和分化的转变有关。虽然仍有许多有待理解的，可用的氧化还原控制的关系提供了一个关键的基础机制，激素控制，能量代谢和生物能量学植物生长和发育。
HighlightsRedox relays integrate into developmental programs.The cell cycle in plants is under redox control.Enzymatic regulation of thiol-switches is a fundamental concept in oxygen and ROS signalling.Specificity of ROS signals is provided by thiol-switches in target proteins.Reactive oxygen species (ROS) and associated reduction/oxidation (redox) controls involving glutathione, glutaredoxins and thioredoxins play key roles in the regulation of plant growth and development. While many questions remain concerning redox functions in the shoot apical meristem (SAM), accumulating evidence suggests that redox master switches integrate major hormone signals and transcriptional networks in the SAM, and so regulate organ growth, polarity and floral development. Auxin-induced activation of plasma-membrane located NADPH-oxidases and mitochondrial respiratory bioenergetics are likely regulators of the ROS bursts that drive the cell cycle in proliferating regions, with other hormones such as jasmonic acid playing propagating or antagonistic roles in gene regulation. Moreover, the activation of oxygen production by photosynthesis and oxygen-dependent N-end rule controls are linked to the transition from cell proliferation to cell expansion and differentiation. While much remains to be understood, the nexus of available redox controls provides a key underpinning mechanism linking hormonal controls, energy metabolism and bioenergetics to plant growth and development.