Role of mitochondrial alternative oxidase in the regulation of cellular homeostasis during development of photosynthetic function in greening leaves,Plant Biology

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Role of mitochondrial alternative oxidase in the regulation of cellular homeostasis during development of photosynthetic function in greening leaves
Plant Biology ( IF 4.2 ) Pub Date : 2020-11-15 , DOI: 10.1111/plb.13217
E. V. Garmash ₁

Affiliation

Here, recent publications on the role of mitochondrial non‐phosphorylating pathways (NPhPs) in the electron transport chain during the de‐etiolation of wheat leaves are reviewed. Among NPhPs, the alternative oxidase (AOX) pathway is the most effective pathway in maintaining cellular redox and energy balance, especially under stress conditions, including light stress. AOX is considered to dissipate excess reductants produced in the chloroplasts, and thereby prevent photooxidation. However, when etiolated wheat plants were exposed to a physiologically relevant light level, AOX was rapidly induced and increased, although the etioplasts did not produce excess reductants and have their own strong photoprotective mechanisms. The present study provides further insights into the role of AOX in greening cells and highlights the importance of AOX in the integration of cellular signalling pathways.

中文翻译：

线粒体替代氧化酶在绿化叶片光合功能发展过程中调控细胞稳态的作用

在此，综述了有关小麦叶片去黄化过程中线粒体非磷酸化途径（NPhPs）在电子传输链中的作用的最新出版物。在NPhP中，替代氧化酶（AOX）途径是维持细胞氧化还原和能量平衡的最有效途径，尤其是在包括轻胁迫在内的胁迫条件下。人们认为AOX可以消散叶绿体中产生的过量还原剂，从而防止光氧化。然而，当黄化的小麦植株暴露于生理相关的光照水平时，AOX被迅速诱导并增加，尽管黄绿体不产生过量的还原剂并具有自己强大的光保护机制。

更新日期：2020-11-15

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