Redox sensing and signalling associated with reactive oxygen in chloroplasts, peroxisomes and mitochondria
Redox sensing and signalling associated with reactive oxygen in chloroplasts, peroxisomes and mitochondria
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DOI：
10.1034/j.1399-3054.2003.00223.x
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发表时间：
2003-11-01
影响因子：
6.4
通讯作者：
Noctor, G
中科院分区：
文献类型：
--
作者：
Foyer, CH;Noctor, G
叶绿体和线粒体是光合作用细胞的发电站。光合和呼吸电子传递链的氧化还原级联反应不仅提供代谢的驱动力，而且产生氧化还原信号，参与和调节植物生物学的各个方面，从基因表达和翻译到酶化学。质体醌、硫氧还蛋白和活性氧都被证明具有信号传导功能。此外，分子氧在电子传递过程中的内在参与以及超氧化物、过氧化氢和单线态氧的内在产生提供了额外的极其强大的信号的库。越来越多的证据表明，植物细胞的主要氧化还原缓冲剂，抗坏血酸和谷胱甘肽，在氧化还原信号转导。来自能量产生细胞器的氧化还原信号网络协调新陈代谢，以调整能量的产生和利用，与激素信号相互作用，以响应植物发育的每个阶段的环境变化。
Chloroplasts and mitochondria are the powerhouses of photosynthetic cells. The oxidation-reduction (redox) cascades of the photosynthetic and respiratory electron transport chains not only provide the driving forces for metabolism but also generate redox signals, which participate in and regulate every aspect of plant biology from gene expression and translation to enzyme chemistry. Plastoquinone, thioredoxin and reactive oxygen have all been shown to have signalling functions. Moreover, the intrinsic involvement of molecular oxygen in electron transport processes with the inherent generation of superoxide, hydrogen peroxide and singlet oxygen provides a repertoire of additional extremely powerful signals. Accumulating evidence implicates the major redox buffers of plant cells, ascorbate and glutathione, in redox signal transduction. The network of redox signals from energy-generating organelles orchestrates metabolism to adjust energy production to utilization, interfacing with hormone signalling to respond to environmental change at every stage of plant development.