(+)-Abscisic acid NEW

(+)-Abscisic acid Cas 21293-29-8

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Abscisic Acid (ABA) is a key plant hormone, often called the "stress hormone." The (+)-Abscisic acid form, specifically (S)-(+)-ABA, is the natural, biologically active enantiomer found in plants.

What It Does (Primary Physiological Roles):

• Stress Response: Its main role is to orchestrate a plant's response to environmental stresses, especially drought and salinity. It triggers stomatal closure in leaves to reduce water loss.

  Seed Dormancy: Induces and maintains dormancy, preventing seeds from germinating under unfavorable conditions.

  Bud Dormancy: Regulates dormancy in buds, enabling plants to survive winter.

  Growth Inhibition: Generally acts as an antagonist to growth-promoting hormones (like auxins and gibberellins) under stress.

  Other Functions: Involved in fruit ripening, leaf senescence, and response to pathogens.

Primary Uses & Applications:

1. Agricultural Biotechnology: Research focuses on modifying ABA pathways to develop drought-tolerant and stress-resilient crops.

2. Plant Tissue Culture: Used to induce somatic embryogenesis and maintain dormancy in cultured tissues.

3. Horticulture & Floriculture: Can be applied to manage stress during transplanting or to delay germination/growth commercially.

4. Scientific Research: A vital tool for studying plant stress signaling, dormancy, and water-use efficiency.

Note: A synthetic form of the active (S)-(+)-ABA (marketed as products like ProTone®) is used as a plant growth regulator to improve stress tolerance (e.g., in turfgrass, vineyards during transplant). It helps crops conserve water and survive temporary drought.

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Spring Zhang

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