期刊
FRONTIERS IN PLANT SCIENCE
卷 6, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fpls.2015.00462
关键词
abiotic stress; crop-loss; phytohormones; salicylic acid; stress tolerance mechanisms
资金
- University Grants Commission (UGC)
- Department of Biotechnology-BUILDER (DBT-BUILDER), New Delhi (India)
- Portuguese Foundation for Science (FCT, Research Institute/CESAM, Portugal) [SFRH/BPD/84671/2012]
- Technology Aveiro University [UID/AMB/50017/2013]
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/84671/2012] Funding Source: FCT
Abiotic stresses (such as metals/metalloids, salinity, ozone, UV-B radiation, extreme temperatures, and drought) are among the most challenging threats to agricultural system and economic yield of crop plants. These stresses (in isolation and/or combination) induce numerous adverse effects in plants, impair biochemical/physiological and molecular processes, and eventually cause severe reductions in plant growth, development and overall productivity. Phytohormones have been recognized as a strong tool for sustainably alleviating adverse effects of abiotic stresses in crop plants. In particular, the significance of salicylic acid (SA) has been increasingly recognized in improved plant abiotic stress-tolerance via SA-mediated control of major plant-metabolic processes. However, the basic biochemical/physiological and molecular mechanisms that potentially underpin SA-induced plant-tolerance to major abiotic stresses remain least discussed. Based on recent reports, this paper: (a) overviews historical background and biosynthesis of SA under both optimal and stressful environments in plants; (b) critically appraises the role of SA in plants exposed to major abiotic stresses; (c) cross-talks potential mechanisms potentially governing SA-induced plant abiotic stress-tolerance; and finally (d) briefly highlights major aspects so far unexplored in the current context.
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