Introduction From genes to stomata, (+)-ABA plays an important Abscisic acid (ABA) is involved in many of the responses of plants to environmental stress. This role in stress physiology (Davies and Jones, 1991; Munns and Cramer, 1996). (+)-ABA concentrations usually study focuses on the inhibitory effect of ABA on leaf expansion. In addition, the effects of (+)-ABA, the increase when the plant ...
