Department of Biotechnology, Vignan's Foundation for Science, Technology & Research (Deemed to be University), Vadlamudi, Guntur 522 213, Andhra Pradesh, India.
Max-Planck-Institut für Molekulare Pflanzenphysiologie, Am Muhlenberg 1, 14476 Potsdam-Golm, Germany; International Rice Research Institute, DAPO Box 7777, Metro Manila, Philippines.
Trends Plant Sci. 2022 Dec;27(12):1283-1295. doi: 10.1016/j.tplants.2022.08.013. Epub 2022 Sep 10.
Abscisic acid (ABA) is known to confer stress tolerance; however, at elevated levels it impairs plant growth under prolonged stress. Paradoxically, at its basal level, ABA plays many vital roles in promoting plant growth and development, including modulation of tillering, flowering, and seed development, as well as seed maturation. In this review, we provide insight into novel discoveries of ABA fluxes, ABA signaling responses, and their impact on yield stability. We discuss ABA homeostasis implicated under pre- and postanthesis drought and its impact on productive tillers, grain number determination, and seed development to address yield stability in cereal crops while considering the new knowledge that emerged from the model plant systems.
脱落酸（ABA）被认为能赋予植物抗逆性；然而，在高浓度下，它会在长期胁迫下损害植物生长。矛盾的是，在其基础水平上，ABA 在促进植物生长和发育方面发挥着许多重要作用，包括分蘖、开花和种子发育以及种子成熟的调节。在这篇综述中，我们深入探讨了 ABA 流动、ABA 信号响应及其对产量稳定性的影响的新发现。我们讨论了在花前和花后干旱条件下涉及的 ABA 动态平衡及其对生产性分蘖、籽粒数决定和种子发育的影响，以解决谷物作物的产量稳定性问题，同时考虑到模式植物系统中出现的新知识。
