Abiotic Stress-Induced Leaf Senescence: Regulatory Mechanisms and Application.
Abiotic Stress-Induced Leaf Senescence: Regulatory Mechanisms and Application.
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DOI：
10.3390/ijms241511996
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发表时间：
2023-07-26
影响因子：
5.6
通讯作者：
Li Z
中科院分区：
文献类型：
--
作者：
Tan S;Sha Y;Sun L;Li Z
叶片衰老是植物衰老过程中发生的一种自然现象，受多种内外因素的影响。这些因素包括植物激素，以及环境压力，如营养不足，干旱，黑暗，高盐度和极端温度。非生物胁迫加速叶片衰老，导致光合效率、产量和品质降低。全面了解叶片衰老响应非生物胁迫的分子机制对于提高作物在不利环境中的恢复力和生产力至关重要。近年来，叶片衰老的研究取得了很大的进展，特别是在确定参与这一过程的关键基因和转录因子方面。然而，挑战仍然存在，包括需要进一步探索复杂的调控网络叶片衰老和有效的策略，操纵作物基因的发展。本文综述了非生物胁迫下叶片衰老的分子机制，沿着提出了通过延缓叶片衰老提高作物抗逆性、提高产量和品质的策略。此外，该综述还强调了与叶片衰老研究相关的挑战，并提出了潜在的解决方案。
Leaf senescence is a natural phenomenon that occurs during the aging process of plants and is influenced by various internal and external factors. These factors encompass plant hormones, as well as environmental pressures such as inadequate nutrients, drought, darkness, high salinity, and extreme temperatures. Abiotic stresses accelerate leaf senescence, resulting in reduced photosynthetic efficiency, yield, and quality. Gaining a comprehensive understanding of the molecular mechanisms underlying leaf senescence in response to abiotic stresses is imperative to enhance the resilience and productivity of crops in unfavorable environments. In recent years, substantial advancements have been made in the study of leaf senescence, particularly regarding the identification of pivotal genes and transcription factors involved in this process. Nevertheless, challenges remain, including the necessity for further exploration of the intricate regulatory network governing leaf senescence and the development of effective strategies for manipulating genes in crops. This manuscript provides an overview of the molecular mechanisms that trigger leaf senescence under abiotic stresses, along with strategies to enhance stress tolerance and improve crop yield and quality by delaying leaf senescence. Furthermore, this review also highlighted the challenges associated with leaf senescence research and proposes potential solutions.
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