Journal ArticleDOI
Cross-talk between abscisic acid-dependent and abscisic acid-independent pathways during abiotic stress.
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TLDR
There are genes or TFs containing both DRE/CRT and ABRE, which can integrate input stimuli from salinity, drought, cold and ABA signaling pathways, thereby enabling cross-tolerance to multiple stresses.Abstract:
Salinity, drought and low temperature are the common forms of abiotic stress encountered by land plants. To cope with these adverse environmental factors, plants execute several physiological and metabolic responses. Both osmotic stress (elicited by water deficit or high salt) and cold stress increase the endogenous level of the phytohormone abscisic acid (ABA). ABA-dependent stomatal closure to reduce water loss is associated with small signaling molecules like nitric oxide, reactive oxygen species and cytosolic free calcium, and mediated by rapidly altering ion fluxes in guard cells. ABA also triggers the expression of osmotic stress-responsive (OR) genes, which usually contain single/multiple copies of cis-acting sequence called abscisic acid-responsive element (ABRE) in their upstream regions, mostly recognized by the basic leucine zipper-transcription factors (TFs), namely, ABA-responsive element-binding protein/ABA-binding factor. Another conserved sequence called the dehydration-responsive element (DRE)/C-repeat, responding to cold or osmotic stress, but not to ABA, occurs in some OR promoters, to which the DRE-binding protein/C-repeat-binding factor binds. In contrast, there are genes or TFs containing both DRE/CRT and ABRE, which can integrate input stimuli from salinity, drought, cold and ABA signaling pathways, thereby enabling cross-tolerance to multiple stresses. A strong candidate that mediates such cross-talk is calcium, which serves as a common second messenger for abiotic stress conditions and ABA. The present review highlights the involvement of both ABA-dependent and ABA-independent signaling components and their interaction or convergence in activating the stress genes. We restrict our discussion to salinity, drought and cold stress.read more
Citations
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Journal ArticleDOI
Abscisic Acid Signaling and Abiotic Stress Tolerance in Plants: A Review on Current Knowledge and Future Prospects.
Kanchan Vishwakarma,Neha Upadhyay,Nitin Kumar,Gaurav Yadav,Jaspreet Singh,Rohit Kumar Mishra,Vivek Kumar,Rishi Verma,R. G. Upadhyay,Mayank Pandey,Shivesh Sharma +10 more
TL;DR: The importance and role of A BA signaling with regard to various stresses as well as regulation of ABA biosynthetic pathway along with the transcription factors for stress tolerance are enlightened.
Journal ArticleDOI
Nitric oxide function in plant abiotic stress
TL;DR: The emerging knowledge concerning the function of NO and S-nitrosylation during plant responses to abiotic stress is described.
Journal ArticleDOI
The Role and Regulation of ABI5 (ABA-Insensitive 5) in Plant Development, Abiotic Stress Responses and Phytohormone Crosstalk
TL;DR: Recent advances in understanding the action of ABI5 in early developmental processes and the adaptation of plants to unfavorable environmental conditions are described and monocot orthologs of AtABI5 have been identified.
Journal ArticleDOI
The phytohormone crosstalk paradigm takes center stage in understanding how plants respond to abiotic stresses.
TL;DR: The recent findings have made it increasingly apparent that such crosstalk will also explain the extreme pleiotropic responses elicited by various phytohormones and it would not be presumptuous to expect that in the coming years this paradigm will take a central role in explaining developmental regulation.
Journal ArticleDOI
Abscisic-acid-dependent basic leucine zipper (bZIP) transcription factors in plant abiotic stress.
TL;DR: The present review will provide a coherent documentation on the functional characterization and regulation of bZIP TFs under multiple environmental stresses, with the major goal of generating multiple-stress-tolerant plant cultivars in near future.
References
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Journal ArticleDOI
Salt and drought stress signal transduction in plants
TL;DR: Salt and drought stress signal transduction consists of ionic and osmotic homeostasis signaling pathways, detoxification (i.e., damage control and repair) response pathways, and pathways for growth regulation.
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MYB transcription factors in Arabidopsis
TL;DR: The elucidation ofMYB protein function and regulation that is possible in Arabidopsis will provide the foundation for predicting the contributions of MYB proteins to the biology of plants in general.
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PLANT COLD ACCLIMATION: Freezing Tolerance Genes and Regulatory Mechanisms
TL;DR: This review of recent advances in determining the nature and function of genes with roles in freezing tolerance and the mechanisms involved in low temperature gene regulation and signal transduction concludes that cold acclimation includes the expression of certain cold-induced genes that function to stabilize membranes against freeze-induced injury.
Journal ArticleDOI
Two transcription factors, DREB1 and DREB2, with an EREBP/AP2 DNA binding domain separate two cellular signal transduction pathways in drought- and low-temperature-responsive gene expression, respectively, in Arabidopsis.
Qiang Liu,Mie Kasuga,Yoh Sakuma,Hiroshi Abe,Setsuko Miura,Kazuko Yamaguchi-Shinozaki,Kazuo Shinozaki +6 more
TL;DR: Overexpression of the DREB1A cDNA in transgenic Arabidopsis plants not only induced strong expression of the target genes under unstressed conditions but also caused dwarfed phenotypes in the transgenic plants, and revealed freezing and dehydration tolerance.
Plant cold acclimation: Freezing tolerance genes and regulatory mechanisms
TL;DR: A review of recent advances in determining the nature and function of genes with roles in freezing tolerance and the mechanisms involved in low temperature gene regulation and signal transduction are described in this article.