期刊
PLANT BIOLOGY
卷 23, 期 2, 页码 221-228出版社
WILEY
DOI: 10.1111/plb.13217
关键词
alternative oxidase; de-etiolation; gene expression; non-phosphorylating pathway; signalling pathway
资金
- RFBR [19-04-00476 A]
- Ministry of Science and Higher Education of the Russian Federation [AAAA-A17-117033010038-7]
The AOX pathway within NPhPs plays a critical role in maintaining cellular redox and energy balance, especially under stress conditions such as light stress. AOX helps cells dissipate excess reductants and prevent photooxidation, particularly when exposed to physiologically relevant light levels. This study further explores the role of AOX in greening cells and emphasizes its importance in integrating cellular signaling pathways.
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.
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