Max-Planck-Institut für Molekulare Pflanzenphysiologie, 14476 Potsdam-Golm, Germany.
Lehrstuhl für Botanik, Technische Universität München, D-85354 Freising, Germany.
Trends Plant Sci. 2019 Jul;24(7):625-635. doi: 10.1016/j.tplants.2019.04.008. Epub 2019 May 29.
The physiological roles of abscisic acid (ABA) as a stress hormone in plant responses to water shortage, including stomatal regulation and gene expression, have been well documented. However, less attention has been paid to the function of basal ABA synthesized under well-watered conditions in recent studies. In this review, we summarize progress in the understanding of how low concentrations of ABA are perceived at the molecular level and how its signaling affects plant metabolism and growth under nonstressed conditions. We also discuss the dual nature of ABA in acting as an inhibitor and activator of plant growth and development.
脱落酸（ABA）作为一种植物对缺水胁迫反应的应激激素，其在气孔调节和基因表达等方面的生理作用已得到充分证实。然而，在最近的研究中，对在水分充足条件下合成的基础 ABA 的功能关注较少。在这篇综述中，我们总结了在分子水平上感知低浓度 ABA 的进展，以及其信号如何影响非胁迫条件下植物的代谢和生长。我们还讨论了 ABA 在作为植物生长发育的抑制剂和激活剂的双重性质。
