2-|cis|,4-|trans|-Abscisic acid CAS:14375-45-2

Regulation of Stomatal Closure: ABA plays a crucial role in controlling the opening and closing of stomata, the small pores on plant leaves, which helps regulate water loss from the plant. This is particularly important during drought conditions, as ABA helps plants conserve water by causing stomatal closure.

Seed Dormancy and Germination: ABA helps regulate seed dormancy, the period of inactivity before germination, and promotes seed dormancy under unfavorable environmental conditions. It also inhibits seed germination, which can be advantageous for preventing premature germination in unfavorable conditions.

Stress Response: ABA is involved in the plant's response to various environmental stresses, including drought, high salinity, and extreme temperatures. It helps plants adapt to and cope with adverse environmental conditions by triggering stress response mechanisms.

Agricultural Applications: ABA is used in agriculture to improve stress tolerance in crops. It can be applied exogenously to enhance plant resistance to drought, salinity, and other environmental stresses. ABA treatments are also used to regulate seed dormancy and promote uniform germination in agricultural practices.

Research and Biotechnology: ABA is widely used in research and biotechnological applications to study plant stress responses, signaling pathways, and developmental processes. It is also utilized in the development of genetically modified crops with improved stress tolerance.