The phytohormone abscisic acid (ABA) plays crucial roles in numerous physiological processes during plant growth and abiotic stress responses. The endogenous ABA level is controlled by complex regulatory mechanisms involving biosynthesis, catabolism, transport and signal transduction pathways. This complex regulatory network may target multiple levels, including transcription, translation and post-translational regulation of genes involved in ABA responses. Most of the genes involved in ABA biosynthesis, catabolism and transport have been characterized. The local ABA concentration is critical for initiating ABA-mediated signalling during plant development and in response to environmental changes. In this chapter we discuss the mechanisms that regulate ABA biosynthesis, catabolism, transport and homoeostasis. We also present the findings of recent research on ABA perception by cellular receptors, and ABA signalling in response to cellular and environmental conditions.
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September 2015
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Review Article|
September 15 2015
Abscisic acid: biosynthesis, inactivation, homoeostasis and signalling
Ting Dong;
Ting Dong
Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, 790-784, Korea
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Youngmin Park;
Youngmin Park
Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, 790-784, Korea
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Inhwan Hwang
Inhwan Hwang
1
Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, 790-784, Korea
1To whom correspondence should be addressed (email ihhwang@postech.ac.kr).
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Essays Biochem (2015) 58: 29–48.
Citation
Thomas Guilfoyle, Gretchen Hagen, Ting Dong, Youngmin Park, Inhwan Hwang; Abscisic acid: biosynthesis, inactivation, homoeostasis and signalling. Essays Biochem 15 September 2015; 58 29–48. doi: https://doi.org/10.1042/bse0580029
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