是刺激还是抑制？这就是脱落酸功能的问题所在。

To Stimulate or Inhibit? That Is the Question for the Function of Abscisic Acid.

机构信息

Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany Czech Academy of Sciences and Palacký University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic; Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic; These authors contributed equally to the work.

Department of Molecular Biology, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic; These authors contributed equally to the work.

出版信息

Trends Plant Sci. 2017 Oct;22(10):830-841. doi: 10.1016/j.tplants.2017.07.009. Epub 2017 Aug 23.

DOI:10.1016/j.tplants.2017.07.009

PMID:28843765

Abstract

Physiologically, abscisic acid (ABA) is believed to be a general inhibitor of plant growth, including during the crucial early development of seedlings. However, this view contradicts many reports of stimulatory effects of ABA that, so far, have not been considered in the debate concerning ABA's function in plant development. To address this apparent contradiction, we propose a hypothetical mechanism to explain how ABA might contribute to the promotion of cell expansion. We wish to overturn conventional views on ABA's role during juvenile plant development and put forward the idea that, as for other phytohormones, the role of ABA is determined by dose and sensitivity and ranges from stimulatory to inhibitory effects.

摘要

从生理学角度来看，脱落酸（ABA）被认为是植物生长的普遍抑制剂，包括在幼苗发育的关键早期阶段。然而，这种观点与许多关于 ABA 刺激作用的报告相矛盾，而这些报告迄今为止在关于 ABA 在植物发育中的功能的争论中并未被考虑。为了解决这一明显的矛盾，我们提出了一个假设性的机制来解释 ABA 如何有助于促进细胞扩张。我们希望推翻关于 ABA 在幼年植物发育过程中作用的传统观点，并提出这样一种观点，即与其他植物激素一样，ABA 的作用取决于剂量和敏感性，其作用范围从刺激作用到抑制作用。