Abscisic Acid and Gibberellins Antagonistically Mediate Plant Development and Abiotic Stress Responses.

Abscisic Acid and Gibberellins Antagonistically Mediate Plant Development and Abiotic Stress Responses.
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脱落酸和赤霉素拮抗地介导植物发育和非生物胁迫反应

DOI:
10.3389/fpls.2018.00416
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发表时间:
2018
影响因子:
5.6
通讯作者:
Yang W
Yang W
中科院分区:
生物学2区
文献类型:
--
作者:
Shu K;Zhou W;Chen F;Luo X;Yang W

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植物激素调节植物发育和生物/非生物胁迫反应级联中的许多重要生物过程。自从最初发现植物激素脱落酸 (ABA) 和赤霉素 (GA) 以来,已经过去了 50 多年和 100 多年。在过去的几十年里,大量研究表明,ABA 和 GA 拮抗地调节许多植物发育过程,包括种子成熟、种子休眠和发芽、根起始、下胚轴和茎伸长以及花转变。此外,作为一种成熟的应激激素,ABA 在植物对干旱、洪水、盐度和低温等非生物胁迫的反应中发挥着关键作用。有趣的是,最近的证据表明赤霉素也参与植物对不利环境条件的反应。因此,ABA 和 GA 之间由不同关键调节因子介导的复杂串扰网络已被广泛研究和记录。在这篇更新的小综述中,我们总结了对 ABA 和 GA 在植物发育不同阶段以及各种植物与环境相互作用中拮抗调节作用的最新进展,重点关注 ABA 和 GA 在植物激素代谢和信号转导水平上的串扰。
Phytohormones regulate numerous important biological processes in plant development and biotic/abiotic stress response cascades. More than 50 and 100 years have passed since the initial discoveries of the phytohormones abscisic acid (ABA) and gibberellins (GA), respectively. Over the past several decades, numerous elegant studies have demonstrated that ABA and GA antagonistically regulate many plant developmental processes, including seed maturation, seed dormancy and germination, root initiation, hypocotyl and stem elongation, and floral transition. Furthermore, as a well-established stress hormone, ABA plays a key role in plant responses to abiotic stresses, such as drought, flooding, salinity and low temperature. Interestingly, recent evidence revealed that GA are also involved in plant response to adverse environmental conditions. Consequently, the complex crosstalk networks between ABA and GA, mediated by diverse key regulators, have been extensively investigated and documented. In this updated mini-review, we summarize the most recent advances in our understanding of the antagonistically regulatory roles of ABA and GA in different stages of plant development and in various plant–environment interactions, focusing on the crosstalk between ABA and GA at the levels of phytohormone metabolism and signal transduction.
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