ABA-mediated transcriptional regulation in response to osmotic stress in plants

The plant hormone abscisic acid (ABA) plays a pivotal role in a variety of developmental processes and adaptive stress responses to environmental stimuli in plants. Cellular dehydration during the seed maturation and vegetative growth stages induces an increase in endogenous ABA levels, which contro...

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Bibliographic Details
Published in:Journal of plant research Vol. 124; no. 4; pp. 509 - 525
Main Authors: Fujita, Yasunari, Fujita, Miki, Shinozaki, Kazuo, Yamaguchi-Shinozaki, Kazuko
Format: Journal Article
Language:English
Published: Japan Springer Japan 01.07.2011
Springer Nature B.V
Subjects:
Abscisic acid
Abscisic Acid - metabolism
Acclimatization
Arabidopsis - genetics
Arabidopsis - growth & development
Arabidopsis - metabolism
Arabidopsis Proteins - metabolism
Basic-Leucine Zipper Transcription Factors - genetics
Basic-Leucine Zipper Transcription Factors - metabolism
Biomedical and Life Sciences
Chromatin Assembly and Disassembly
Dehydration
Droughts
Gene Expression Regulation, Plant
Genes, Plant
Hormones
JPR Symposium
Life Sciences
Osmosis
Plant Biochemistry
Plant biology
Plant Ecology
Plant Growth Regulators - metabolism
Plant Physiology
Plant Proteins - genetics
Plant Proteins - metabolism
Plant Sciences
Seeds - genetics
Seeds - growth & development
Seeds - metabolism
Signal Transduction
Stress response
Stress, Physiological
Water - metabolism
Dehydration
Stress response
Transcription factor
Abscisic acid (ABA)
Arabidopsis
Osmotic stress
ISSN:0918-9440, 1618-0860, 1618-0860
Online Access:Get full text
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Summary:The plant hormone abscisic acid (ABA) plays a pivotal role in a variety of developmental processes and adaptive stress responses to environmental stimuli in plants. Cellular dehydration during the seed maturation and vegetative growth stages induces an increase in endogenous ABA levels, which control many dehydration-responsive genes. In Arabidopsis plants, ABA regulates nearly 10% of the protein-coding genes, a much higher percentage than other plant hormones. Expression of the genes is mainly regulated by two different families of bZIP transcription factors (TFs), ABI5 in the seeds and AREB/ABFs in the vegetative stage, in an ABA-responsive-element (ABRE) dependent manner. The SnRK2-AREB/ABF pathway governs the majority of ABA-mediated ABRE-dependent gene expression in response to osmotic stress during the vegetative stage. In addition to osmotic stress, the circadian clock and light conditions also appear to participate in the regulation of ABA-mediated gene expression, likely conferring versatile tolerance and repressing growth under stress conditions. Moreover, various other TFs belonging to several classes, including AP2/ERF, MYB, NAC, and HD-ZF, have been reported to engage in ABA-mediated gene expression. This review mainly focuses on the transcriptional regulation of ABA-mediated gene expression in response to osmotic stress during the vegetative growth stage in Arabidopsis.
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ISSN:0918-9440
1618-0860
1618-0860
DOI:10.1007/s10265-011-0412-3