Abscisic Acid (ABA) is a fundamental plant hormone, often referred to as the stress hormone, that acts as a primary chemical messenger for survival. It regulates critical stages of a plant’s life cycle—from seed dormancy to environmental adaptation—ensuring the plant can withstand harsh external conditions.

ABA is a staple in agricultural research and commercial farming due to its ability to strengthen crop resilience. Its primary roles include stress management, where it triggers the closure of stomata to prevent water loss during droughts; growth regulation, which ensures plants focus energy on survival during winter or dry seasons; and seed development, where it maintains dormancy to prevent premature germination.

The application of ABA varies depending on the specific needs of the plant. For wheat and rice, it improves tolerance to soil salinity and drought, protecting grain yield. In grapes, it promotes uniform fruit coloring and can accelerate the ripening process. For mangoes, it helps regulate flowering cycles and manages the plant's response to temperature fluctuations.

In modern horticulture and agriculture, ABA is a vital tool for resilience. By enhancing a plant's natural defenses against salinity, extreme temperatures, and dehydration, it helps secure food supplies in increasingly unpredictable climates.