Roles of Reactive Oxygen Species and Mitochondria in Seed Germination

文献类型： 外文期刊

第一作者： Farooq, Muhammad Awais

作者： Farooq, Muhammad Awais;Zhang, Xiaomeng;Ma, Wei;Zhao, Jianjun;Farooq, Muhammad Awais;Zafar, Muhammad Mubashar

作者机构：

关键词： seed germination and dormancy; reactive oxygen species (ROS); mitochondria; heat shock proteins (HSPs); embryogenesis and endosperm

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：6.627； 五年影响因子：7.255 ）

ISSN： 1664-462X

年卷期： 2021 年 12 卷

页码：

收录情况： SCI

摘要： Seed germination is crucial for the life cycle of plants and maximum crop production. This critical developmental step is regulated by diverse endogenous [hormones, reactive oxygen species (ROS)] and exogenous (light, temperature) factors. Reactive oxygen species promote the release of seed dormancy by biomolecules oxidation, testa weakening and endosperm decay. Reactive oxygen species modulate metabolic and hormone signaling pathways that induce and maintain seed dormancy and germination. Endosperm provides nutrients and senses environmental signals to regulate the growth of the embryo by secreting timely signals. The growing energy demand of the developing embryo and endosperm is fulfilled by functional mitochondria. Mitochondrial matrix-localized heat shock protein GhHSP24.7 controls seed germination in a temperature-dependent manner. In this review, we summarize comprehensive view of biochemical and molecular mechanisms, which coordinately control seed germination. We also discuss that the accurate and optimized coordination of ROS, mitochondria, heat shock proteins is required to permit testa rupture and subsequent germination.

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