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首页> 外文期刊>Journal of Experimental Botany >The enigmatic contribution of mitochondrial function in photosynthesis
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The enigmatic contribution of mitochondrial function in photosynthesis

机译：线粒体功能在光合作用中的神秘贡献

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Considerable cumulative evidence has accrued suggesting a vital role for mitochondrial function in optimizing photosynthesis. Both pharmacological approaches using respiratory inhibitors and reverse genetic approaches have recently underscored the high degree of interconnection between photosynthesis and respiration—the major pathways of energy production which are largely confined to the plastid and mitochondria, respectively. Here recent studies into the nature of these interactions are reviewed, with particular focus on (i) the recently described link between the mitochondrial electron transport chain activity, ascorbate biosynthesis, and photosynthesis; and (ii) the contribution of mitochondrial metabolism to the photorespiratory process. Whilst there is increasing evidence of a role for ascorbate in co-ordinating the rates of respiration and photosynthesis, some data are presented here for plants grown under extreme environmental conditions that suggest that this relationship is not absolute. It thus seems likely that interactions between these compartments are perhaps more numerous and complicated than previously thought. This observation suggests that although the elucidation of the genetic bases of both photorespiration and the Wheeler–Smirnoff pathway of ascorbate biosynthesis has recently been completed, much further research is probably necessary in order to understand fully how energy metabolism is co-ordinated in the illuminated leaf.
机译：积累了大量的证据表明线粒体功能在优化光合作用中起着至关重要的作用。最近，使用呼吸抑制剂的药理学方法和反向遗传学方法都强调了光合作用和呼吸之间的高度相互联系-这是能量产生的主要途径，分别主要局限于质体和线粒体。在这里，对有关这些相互作用的性质的最新研究进行了综述，特别关注（i）最近描述的线粒体电子转运链活性，抗坏血酸生物合成和光合作用之间的联系； （ii）线粒体代谢对光呼吸过程的贡献。尽管越来越多的证据表明抗坏血酸在协调呼吸和光合作用的速率中起作用，但此处提供了一些有关在极端环境条件下生长的植物的数据，表明这种关系不是绝对的。因此，这些隔室之间的相互作用似乎可能比以前认为的要复杂得多。该观察结果表明，尽管最近已经完成了对光呼吸和抗坏血酸生物合成的Wheeler-Smirnoff途径的遗传基础的阐明，但为了充分了解光照叶中能量代谢的协调方式，可能还需要进行更多的研究。 。

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