Shedding acid

。is a plant
hormone
. ABA
for
. Once known as "shedding acid II.", "sleeping pigment", later confirmed that the two are the same substance, unified named shedding acid. Shedding acid is a compound of multi-and-a-half terpenes with isoprene as the basic
of
. The pure product is white crystalline and can be dissolved in ethanol, acetone and alkaline solutions such as sodium bicarbonate. Shedding acid, which was originally isolated from cotton bells and eucalyptus leaves, has been shown to be prevalent in plants, especially in mature and aging
tissues
, but also in young organs and tissues. The physiological effect of shedding acid is to promote the hibernation of tree buds and inhibit their germination. Another obvious physiological effect can cause the pores to close quickly. When plants are affected by drought, the amount of acid shedding in the leaves increases significantly, for example, when the leaves of vegetable beans wilt, the amount of acid shedding in the leaves can increase by
1.5
times in
10
minutes. When the shedding acid increases, the pores close and the water vapor decreases. After irrigation, the acid content drops and the pores open again. The opening and closing reaction of the shedding acid regulation pores is fast and reversible, so the shedding acid has the effect of regulating steaming. In addition, shedding acid also inhibits the growth of nutrient organs, promotes the aging of leaves and other organs and cotton fruit shedding and other effects.

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