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http://dx.doi.org/10.5352/JLS.2018.28.3.376

Understanding of Drought Stress Signaling Network in Plants  

Lee, Jae-Hoon (Department of Biology Education, Pusan National University)
Publication Information
Journal of Life Science / v.28, no.3, 2018 , pp. 376-387 More about this Journal
Abstract
Among a variety of environmental stresses heat, cold, chilling, high salt, drought, and so on exposed to plants, drought stress has been reported as a crucial factor to adversely affect the growth and productivity of plants. Therefore, to understand the mechanism for the drought stress signal transduction pathway in plants is more helpful to develop useful crops that display the enhanced tolerance against drought stress, and to expand crop growing areas. The signal transduction pathway for the drought stress in plants is largely categorized into two types; ABA-dependent pathway and ABA-independent pathway. It has been reported that two transcription factors, AREB/ABF and DREB2, play predominant roles in ABA-dependent and ABA-independent pathways, respectively. In addition to transcriptional regulation mediated by AREB/ABF and DREB2 transcription factors, post-translational modification (such as phosphorylation and ubiquitination) and epigenetic control are importantly involved in the signal transduction for drought stress. In this paper, we review current understanding of signal transduction pathway on drought stress in plants, especially focusing on the biological roles of a variety of signaling components related to drought stress response. Further understanding the mechanism of drought resistance in plants through this review will be useful to establish theoretical basis for developing drought tolerant crops in the future.
Keywords
ABA-dependent and ABA-independent pathways; drought stress signaling; epigenetic control; post-translational modification; transcriptional regulation;
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