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Abscisic acid

Basic information Description References Safety Related Supplier
Abscisic acid Basic information
Abscisic acid Chemical Properties
  • Melting point:186-188 °C(lit.)
  • Boiling point:458.7±45.0 °C(Predicted)
  • Density 1.193±0.06 g/cm3(Predicted)
  • Flash point:120°C
  • storage temp. −20°C
  • solubility methanol: 50 mg/mL, may be clear to slightly hazy
  • pka4.87±0.33(Predicted)
  • Sensitive Light Sensitive
  • Merck 14,11
  • Sublimation 120 ºC
  • BRN 4142666
  • CAS DataBase Reference14375-45-2(CAS DataBase Reference)
Safety Information
  • Safety Statements 24/25
  • WGK Germany 3
  • 8-10
  • HS Code 29189900
Abscisic acid Usage And Synthesis
  • DescriptionAbscisic Acid (ABA) is a phytohormone, a naturally occurring compound in plant. ABA is regarded as an inhibitor of plant growth and therefore usually used as a growth retardant in plant tissue culture. To date, ABA has been primarily used to promote the maturation of somatic embryos and the synthesis of storage reserves in embryos during maturation. ABA also acts as a controlling factor of germination and dormancy in somatic embryos and is generally used to induce somatic embryos into a quiescent state during plant tissue culture and synthetic seed studies. ABA stimulates the stomatal closure, thereby reducing transpirational water loss. Thus, it could be used as an anti-transpiration during the acclimatization of tissue culture-raised plants.
  • References[1] Shintaro Munemasa, Felix Hauser, Jiyoung Park, Rainer Waadt, Benjamin Brandt, Julian I Schroeder (2015) Mechanisms of abscisic acid-mediated control of stomatal aperture, 28, 154-162
    [2] Manoj K. Rai, N. S. Shekhawat, Harish, Amit K. Gupta, M. Phulwaria, Kheta Ram, U. Jaiswal (2011) The role of abscisic acid in plant tissue culture: a review of recent progress, 106, 179-190
  • Chemical Propertieswhite to light yellow crystalline powder
  • Usesabscission-accelerant; kinetin neucleotide synthesis inhibitor
  • Agricultural UsesThe name abscisic acid (ABA), a weak organic acid, is derived from the ability of a substance to promote abscission. Abscission is the natural detachment of leaves, branches, flowers, etc. from plants. Abscisic acid is a naturally occurring plant growth inhibitor, and is one of five major plant hormones. It carries out a number of important functions in the growth and development of plants. It is a key factor controlling stomatal movements, leaf senescence and bud and seed dormancy. Abscisic acid (ABA) is present in leaves, fruits and seeds, and is distributed throughout the plant body. The synthesis of ABA takes place mainly in chloroplasts. The rate of synthesis of ABA increases when the plant is under stress. Chemically, abscisic acid is a member of the terpenoid family.
  • Metabolic pathwayPlant growth regulators: promotion of maturation of the somatic embryo of white spruce Somatic embryo suspension cultures of white spruce containing (?+)-abscisic acid (ABA) metabolize (+?)- ABA almost completely to yield quantitatively phaseic acid with slight further transformation into dihydrophaseic acid within 7 days. (-)-ABA remains essentially unchanged under the same culture conditions, and when the cells are supplied with racemic (±)-ABA, only the (+?) enantiomer is metabolized.
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