S-apscizinska kiselina učinkovito aktivira gene otpornosti na stres u riži, značajno povećavajući njenu otpornost na sušu, hladnoću i slanost-alkalnost, dok također potiče razvoj korijenskog sustava i povećava broj učinkovitih klipova.
Acting as a "stress-resistance inducer" in plants, this substance triggers the rice plant's internal stress-resistance immune system by regulating the balance of endogenous hormones. Under drought stress, S-abscisic Acid induces stomatal closure to reduce water evaporation; simultaneously, it boosts the activity of protective enzymes—such as superoxide dismutase and catalase—to mitigate membrane lipid peroxidation damage and sustain photosynthetic activity.
U okruženjima s niskom temperaturom, potiče sintezu proteina otpornih na hladnoću i povećava stabilnost stanične membrane, čime se smanjuje stopa kloroze i poleganja uzrokovanih ozljedama od hladnoće.
In saline-alkaline soils, S-abscisic Acid activates osmoregulation genes to bolster cellular osmotic adjustment capabilities, significantly improving the growth vigor of rice under high-salinity conditions.
Furthermore, S-abscisic Acid promotes increased root vitality. Treatment with a concentration of 0.5 mg/L has been shown to significantly enhance root vitality in tobacco; when applied analogously to rice, it demonstrates a similar root-promoting effect. Regarding tiller regulation, abscisic acid acts synergistically with strigolactones to suppress the formation of ineffective tillers while promoting the development of effective tillers, thereby optimizing plant architecture and boosting yield.
U praktičnim primjenama, namakanje sjemena u otopini od 0,3–0,4 mg/L tijekom 24 do 48 sati može značajno poboljšati klijavost i kvalitetu sadnica; foliar spraying during the "one-leaf-and-one-heart" to "two-leaves-and-one-heart" stages aids in seedling establishment and promotes tillering.
