生物资源2025，Vol.47Issue(5)：442-455,14.DOI:10.14188/j.ajsh.20250624001
植物激素脱落酸和赤霉素在干旱调节中的拮抗机制
Antagonistic mechanism of phytohormones abscisic acid and gibberellins in plant drought response
胡骏 1江悦 1黄继帅 1徐祎萌 1陈雨婷 1谢斌1
作者信息
- 1. 武汉大学 生命科学学院 杂交水稻全国重点实验室,湖北 武汉 430072
- 折叠
摘要
Abstract
Drought is one of the major abiotic stresses limiting plant growth,development,and crop production.To adapt to drought conditions,plants have evolved complex response mechanisms,among which phytohormones play a piv-otal role in perceiving stress signals and coordinating growth responses.Abscisic acid(ABA)and gibberellins(GA),as key endogenous regulators,exhibit a typical antagonistic relationship in plant development and stress responses.ABA,widely recognized as a classical stress hormone,has been extensively validated for its critical role in drought stress.Mean-while,an increasing number of studies indicate that GA not only plays an important role in growth and development,but also in drought regulation.Multiple endogenous and exogenous signals can regulate the biosynthesis and catabolism of ABA and GA in opposite ways,thereby mediating a dynamic hormonal antagonism.Recent studies have uncovered di-rect molecular connections between components of the ABA and GA signaling pathways,offering new insights into their antagonistic mechanisms.Here,we summarize the recent advances in understanding the roles of ABA and GA under drought stress,focusing on their crosstalk at the levels of metabolic regulation and signal transduction in plants,with the aim of providing a theoretical basis for the genetic improvement of drought tolerance in crops.关键词
干旱胁迫/脱落酸/赤霉素/串扰机制Key words
drought stress/abscisic acid(ABA)/gibberellins(GA)/crosstalk mechanism分类
生物科学引用本文复制引用
胡骏,江悦,黄继帅,徐祎萌,陈雨婷,谢斌..植物激素脱落酸和赤霉素在干旱调节中的拮抗机制[J].生物资源,2025,47(5):442-455,14.
