This page discusses the role of abscisic acid (ABA) in plant adaptation to stress. ABA is essential for various stress responses, including closing stomata during drought, protecting against dehydrati...This page discusses the role of abscisic acid (ABA) in plant adaptation to stress. ABA is essential for various stress responses, including closing stomata during drought, protecting against dehydration, and regulating seed dormancy. It aids in root growth, leaf, and fruit abscission, and influences seedling growth and apical dominance by inhibiting lateral bud development, underscoring its importance for plant survival in challenging environments.