APETALA 2-domain-containing transcription factors: focusing on abscisic acid and gibberellins antagonism
APETALA 2-domain-containing transcription factors: focusing on abscisic acid and gibberellins antagonism
复制标题
含APETALA 2结构域的转录因子：关注脱落酸和赤霉素拮抗作用
DOI：
10.1111/nph.14880
复制
发表时间：
2018-02-01
期刊：
影响因子：
9.4
通讯作者：
Yang, Wenyu
中科院分区：
文献类型：
--
作者：
Shu, Kai;Zhou, Wenguan;Yang, Wenyu
植物激素脱落酸（ABA）和赤霉素（GA）拮抗地介导多种植物发育过程，包括种子休眠和发芽、根系发育和开花时间控制，因此ABA和GA之间的最佳平衡对于植物生长和发育至关重要。尽管自最初发现 ABA 和 GA 以来已经分别过去了半个多世纪和一个多世纪，但 ABA-GA 拮抗作用的确切机制仍需要进一步研究。新的证据表明，两个含有 APETALA 2 (AP2) 结构域的转录因子 (ATF)，即拟南芥中的 ABI4 和水稻中的 OsAP2-39，在 ABA 和 GA 拮抗作用中发挥着关键作用。这两个转录因子精确调控ABA和GA生物合成或失活基因的转录模式，介导ABA和GA水平。在这篇观点文章中，我们试图阐明 ATF 对 ABA-GA 拮抗作用的影响，并总结这些 ATF 在 ABA 和 GA 拮抗作用中重叠但不同的生物学功能。最后，我们强烈建议需要进一步研究额外的大量 ATF 在 ABA 和 GA 串扰中的详细作用，这将提高我们对这两种植物激素之间拮抗作用的理解。
The phytohormones abscisic acid (ABA) and gibberellin (GA) antagonistically mediate diverse plant developmental processes including seed dormancy and germination, root development, and flowering time control, and thus the optimal balance between ABA and GA is essential for plant growth and development. Although more than a half and one century have passed since the initial discoveries of ABA and GA, respectively, the precise mechanisms underlying ABA-GA antagonism still need further investigation. Emerging evidence indicates that two APETALA 2 (AP2)-domain-containing transcription factors (ATFs), ABI4 in Arabidopsis and OsAP2-39 in rice, play key roles in ABA and GA antagonism. These two transcription factors precisely regulate the transcription pattern of ABA and GA biosynthesis or inactivation genes, mediating ABA and GA levels. In this Viewpoint article, we try to shed light on the effects of ATFs on ABA-GA antagonism, and summarize the overlapping but distinct biological functions of these ATFs in the antagonism between ABA and GA. Finally, we strongly propose that further research is needed into the detailed roles of additional numerous ATFs in ABA and GA crosstalk, which will improve our understanding of the antagonism between these two phytohormones.