(+)-cis,trans-Abscisic acid is a natural and active isomer of the abscission accelerating plant hormone. The compound is a plant growth regulator which has high-affinity binding sites for abscisic acid on the plasmalemma of Vicia faba guard cells. (+)-cis,trans-Abscisic acid has been involved in several physiological mechanisms including seed dormancy, leaf abscission, stomatal movement, and plant stress responses. Throμgh complex interactions with several intracellular signaling systems, the Abscisic isomer can regulate the expression of hundreds of plant genes.(+) - 脱落酸是一种植物激素及生长调节剂,涉及几个生理机制,包括种子休眠,叶片脱落,气孔运动和植物应激反应,如干旱。在一项研究中脱落酸调控四个刚毛柽柳过氧化物酶基因的表达分析。