Abstract            Volume:12  Issue-4  Year-2024         Original Research Articles

Online ISSN : 2347 - 3215 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcret@gmail.com

Climate change is resulting in abiotic stress, including drought and high temperatures, which are affecting the development and production of coffee plants. Drought, a significant environmental stressor, has a detrimental effect on plant growth and productivity, posing a risk to global food security. It diminishes the moisture content in the soil, thereby restricting plant growth and productivity. The objective of this paper is to review the role of Abscisic Acid on coffee under water deficit. Plants have developed adaptive mechanisms to cope with drought stress, including the presence of a crucial phytohormone, Abscisic Acid. Abscisic Acid serves as a key mediator of drought and holds a crucial position in plant growth, development, and reactions to environmental pressures. It serves as a pivotal hormone in enhancing the plant's ability to tolerate abiotic stresses such as heat, cold, salt, drought, and high levels of irradiance. It regulates plant growth, stress responses, and physiological processes, safeguarding plants against abiotic stresses like drought. Furthermore, it activates stress-responsive genes, stomata closure, and regulates plant growth. Abscisic Acid levels increase during drought stress due to gene expression changes and enzymes responsible for Abscisic Acid biosynthesis. Hence, Abscisic Acid serves as a mechanism for drought tolerance in coffee, and research should be concentrated on addressing the existing gaps.

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