Noctor Graham, De Paepe Rosine, Foyer Christine H
Institut de Biotechnologie des Plantes, UMR CNRS 8618, Université de Paris XI, 91405 Orsay cedex, France.
Trends Plant Sci. 2007 Mar;12(3):125-34. doi: 10.1016/j.tplants.2007.01.005. Epub 2007 Feb 12.
Mitochondria are key players in plant cell redox homeostasis and signalling. Earlier concepts that regarded mitochondria as secondary to chloroplasts as the powerhouses of photosynthetic cells, with roles in cell proliferation, death and ageing described largely by analogy to animal paradigms, have been replaced by the new philosophy of integrated cellular energy and redox metabolism involving mitochondria and chloroplasts. Thanks to oxygenic photosynthesis, plant mitochondria often operate in an oxygen- and carbohydrate-rich environment. This rather unique environment necessitates extensive flexibility in electron transport pathways and associated NAD(P)-linked enzymes. In this review, mitochondrial redox metabolism is discussed in relation to the integrated cellular energy and redox function that controls plant cell biology and fate.
线粒体是植物细胞氧化还原稳态和信号传导的关键参与者。早期观点认为线粒体作为光合细胞的动力源，其重要性仅次于叶绿体，在细胞增殖、死亡和衰老中的作用很大程度上是通过类比动物模式来描述的，而现在这种观点已被涉及线粒体和叶绿体的整合细胞能量与氧化还原代谢的新观念所取代。由于有氧光合作用，植物线粒体通常在富含氧气和碳水化合物的环境中运作。这种相当独特的环境要求电子传递途径及相关的NAD(P)连接酶具有广泛的灵活性。在本综述中，将结合控制植物细胞生物学和命运的整合细胞能量与氧化还原功能来讨论线粒体氧化还原代谢。
