Integration of ABA, GA, and light signaling in seed germination through the regulation of ABI5

Seed germination is precisely controlled by a variety of signals, among which light signals and the phytohormones abscisic acid (ABA) and gibberellin (GA) play crucial roles. New findings have greatly increased our understanding of the mechanisms by which these three signals regulate seed germinatio...

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Published inFrontiers in plant science Vol. 13; p. 1000803
Main Authors Zhao, Hongyun, Zhang, Yamei, Zheng, Yuan
Format Journal Article
LanguageEnglish
Published Frontiers Media S.A 24.08.2022
Subjects
ABI5
abscisic acid
Arabidopsis
gibberellins
light signaling
Plant Science
seed germination
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ISSN1664-462X
1664-462X
DOI10.3389/fpls.2022.1000803

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Summary:Seed germination is precisely controlled by a variety of signals, among which light signals and the phytohormones abscisic acid (ABA) and gibberellin (GA) play crucial roles. New findings have greatly increased our understanding of the mechanisms by which these three signals regulate seed germination and the close connections between them. Although much work has been devoted to ABA, GA, and light signal interactions, there is still no systematic description of their combination, especially in seed germination. In this review, we integrate ABA, GA, and light signaling in seed germination through the direct and indirect regulation of ABSCISIC ACID INSENSITIVE5 (ABI5), the core transcription factor that represses seed germination in ABA signaling, into our current understanding of the regulatory mechanism of seed germination.
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Edited by: Yunpeng Cao, Chinese Academy of Sciences, China
Reviewed by: Xuehai Zhang, Henan Agricultural University, China; Yongqing Yang, China Agricultural University, China
These authors have contributed equally to this work
This article was submitted to Plant Bioinformatics, a section of the journal Frontiers in Plant Science
ISSN:1664-462X
1664-462X
DOI:10.3389/fpls.2022.1000803