Advances in Plant Auxin Biology: Synthesis, Metabolism, Signaling, Interaction with Other Hormones, and Roles under Abiotic Stress

Plants Pub Date : 2024-09-08 DOI:10.3390/plants13172523
Jianshuang Gao, Shunyao Zhuang, Weiwei Zhang
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Abstract

Auxin is a key hormone that regulates plant growth and development, including plant shape and sensitivity to environmental changes. Auxin is biosynthesized and metabolized via many parallel pathways, and it is sensed and transduced by both normal and atypical pathways. The production, catabolism, and signal transduction pathways of auxin primarily govern its role in plant growth and development, and in the response to stress. Recent research has discovered that auxin not only responds to intrinsic developmental signals, but also mediates various environmental signals (e.g., drought, heavy metals, and temperature stresses) and interacts with hormones such as cytokinin, abscisic acid, gibberellin, and ethylene, all of which are involved in the regulation of plant growth and development, as well as the maintenance of homeostatic equilibrium in plant cells. In this review, we discuss the latest research on auxin types, biosynthesis and metabolism, polar transport, signaling pathways, and interactions with other hormones. We also summarize the important role of auxin in plants under abiotic stresses. These discussions provide new perspectives to understand the molecular mechanisms of auxin’s functions in plant development.
植物叶黄素生物学研究进展:合成、代谢、信号传递、与其他激素的相互作用以及在非生物胁迫下的作用
叶黄素是调节植物生长和发育(包括植物形状和对环境变化的敏感性)的一种关键激素。叶黄素通过许多平行途径进行生物合成和代谢,并通过正常和非典型途径进行感应和信号转导。辅酶的产生、分解和信号转导途径主要决定了它在植物生长和发育以及对胁迫的反应中的作用。最近的研究发现,辅酶不仅能对内在发育信号做出反应,还能介导各种环境信号(如干旱、重金属和温度胁迫),并与细胞分裂素、脱落酸、赤霉素和乙烯等激素相互作用,所有这些激素都参与植物生长和发育的调控,并维持植物细胞的平衡。在这篇综述中,我们讨论了有关辅酶类型、生物合成和代谢、极性运输、信号传导途径以及与其他激素相互作用的最新研究。我们还总结了在非生物胁迫下植物体内辅助素的重要作用。这些讨论为了解植物发育过程中植物生长素功能的分子机制提供了新的视角。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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