S-Abscisic Acid (S-ABA) does indeed help strawberries ripen and sweeten, while also increasing anthocyanin accumulation and sugar content. Authoritative studies have verified its mechanism of action:
1. Mechanism of Action
Regulating Sugar Accumulation: Research by a team of professors at Beijing University of Agriculture has confirmed that S-Abscisic Acid (S-ABA) directly regulates sugar accumulation during strawberry fruit ripening through the FaRIPK1-FaTCP7-FaSTP13/FaSPT molecular module. During fruit ripening, S-Abscisic Acid levels increase, relieving the inhibition of sugar transport gene expression through signal transduction, activating sugar carrier gene activity, and directly promoting sugar accumulation in the fruit. This molecularly verifies the core role of ABA in increasing strawberry sugar content.
Promoting Anthocyanin Accumulation: S-Abscisic Acid can enhance the synthesis and accumulation of anthocyanins, while simultaneously regulating the balance of endogenous plant hormones, thereby promoting strawberry coloring and early ripening, resulting in more uniform and complete color change. Sugars themselves can also act as precursors and signaling molecules for anthocyanin synthesis, further aiding in anthocyanin accumulation and synergistically enhancing color change.
2. Application Value S-Abscisic acid is one of the five major endogenous hormones in plants. Besides improving color and sweetness, it can also simultaneously enhance the stress resistance of strawberries (drought resistance, cold resistance, salt and alkali resistance, and mitigation of pesticide and fertilizer damage), reducing the amount of chemical pesticides used, and ensuring stable yields while promoting strawberry quality improvement.
