活性氧
信号
氧化还原
非生物成分
背景(考古学)
细胞生物学
线粒体
叶绿体
适应
生物
线粒体ROS
氧化应激
非生物胁迫
代谢途径
生物化学
化学
植物
新陈代谢
生态学
基因
古生物学
有机化学
作者
Nobuhiro Suzuki,Shai Koussevitzky,Ron Mittler,Gad Miller
标识
DOI:10.1111/j.1365-3040.2011.02336.x
摘要
The redox state of the chloroplast and mitochondria, the two main powerhouses of photosynthesizing eukaryotes, is maintained by a delicate balance between energy production and consumption, and affected by the need to avoid increased production of reactive oxygen species (ROS). These demands are especially critical during exposure to extreme environmental conditions, such as high light (HL) intensity, heat, drought or a combination of different environmental stresses. Under these conditions, ROS and redox cues, generated in the chloroplast and mitochondria, are essential for maintaining normal energy and metabolic fluxes, optimizing different cell functions, activating acclimation responses through retrograde signalling, and controlling whole-plant systemic signalling pathways. Regulation of the multiple redox and ROS signals in plants requires a high degree of coordination and balance between signalling and metabolic pathways in different cellular compartments. In this review, we provide an update on ROS and redox signalling in the context of abiotic stress responses, while addressing their role in retrograde regulation, systemic acquired acclimation and cellular coordination in plants.
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