ABA (abscisic acid)

Abscisic acid (ABA) is a plant hormone that plays a crucial role in helping plants respond to stress, such as drought or cold. It signals plants to conserve water by closing stomata (tiny pores on leaves), reducing water loss. ABA also helps regulate seed dormancy, preventing seeds from germinating prematurely under unfavorable conditions. Essentially, ABA acts as a stress alarm system, helping plants survive challenging environments by coordinating their growth and water management strategies.