Antagonistic Regulation of ABA and GA in Metabolism and Signaling Pathways

The phytohormones gibberellic acid (GA) and abscisic acid (ABA) are widely recognized as essential endogenous regulators that mostly play antagonistic roles in plant developmental processes and environmental responses. A variety of both internal and external cues oppositely regulate GA and ABA biosy...

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Published inFrontiers in plant science Vol. 9; p. 251
Main Authors Liu, Xu, Hou, Xingliang
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers Media S.A 26.02.2018
Subjects
abscisic acid
antagonistic interaction
gibberellic acid
metabolic pathway
Plant Science
signaling pathway
antagonistic interaction
signaling pathway
metabolic pathway
abscisic acid
gibberellic acid
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Summary:The phytohormones gibberellic acid (GA) and abscisic acid (ABA) are widely recognized as essential endogenous regulators that mostly play antagonistic roles in plant developmental processes and environmental responses. A variety of both internal and external cues oppositely regulate GA and ABA biosynthesis and catabolism, which directly and indirectly affect their signaling pathways and subsequent responses. Recent discoveries have revealed direct molecular links between GA- and ABA-signaling components, which provide novel insights into their antagonistic regulation. In this review, we mainly focus on these recent reports and the growing understanding of GA and ABA antagonism in metabolic regulation and signaling interactions, and attempt to clarify the problems and challenges involved in exploring the complicated regulatory events associated with these two phytohormones.
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This article was submitted to Plant Physiology, a section of the journal Frontiers in Plant Science
Reviewed by: Kai Shu, Sichuan Agricultural University, China; Lucio Conti, Università degli Studi di Milano, Italy
Edited by: Paola Vittorioso, Sapienza Università di Roma, Italy
ISSN:1664-462X
1664-462X
DOI:10.3389/fpls.2018.00251