Implications of Abscisic Acid in the Drought Stress Tolerance of Plants

By Shahid Ali, Kashif Hayat, A. Iqbal, Linan Xie. Agronomy, 2020

164 citations recorded by the source corpus.

Drought is a severe environmental constraint, which significantly affects plant growth, productivity, and quality. Plants have developed specific mechanisms that perceive the stress signals and respond to external environmental changes via different mitigation strategies. Abscisic acid (ABA), being one of the phytohormones, serves as an important signaling mediator for plants’ adaptive response to a variety of environmental stresses. ABA triggers many physiological processes, including bud dormancy, seed germination, stomatal closure, and transcriptional and post-transcriptional regulation of stress-responsive gene expression. The site of its biosynthesis and action must be clarified to understand the signaling network of ABA. Various studies have documented multiple sites for ABA biosynthesis, their transporter proteins in the plasma membrane, and several components of ABA-dependent signaling pathways, suggesting that the ABA response to external stresses is a complex networking mechanism. Knowing about stress signals and responses will increase our ability to enhance crop stress tolerance through the use of various advanced techniques. This review will elaborate on the ABA biosynthesis, transportation, and signaling pathways at the molecular level in response to drought stress, which will add a new insight for future studies.

Subfields: Plant Science

View Paper: https://www.semanticscholar.org/paper/7e7907b5c6d58dc57e7b0f95da8fe68a03126a69

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In Plant Science

1. Shahid Ali
2. N. Khan
3. M. Shahid

Citations in the corpus

• Water Conservation and Plant Survival Strategies of Rhizobacteria under Drought Stress (2020, background): “Additionally, a variety of compounds serve as systemic signals to alleviate stress within the plants, for example, small RNAs (sRNA), peptides and metabolites [198].”