(+)Abscisic Acid (Dormin, ABA)

Description

An isoprenoid plant hormone that acts as a growth regulator affecting leaf and fruit abscission and increases permeability of plant cells to water. Under osmotic stress conditions it alters the osmotic potential of stomatal guard cells, causing them to shrink and stomata to close. Also acts as a proton pump inhibitor. The trans form is shown to potentiate NMDA-gated currents in hippocampal neurons (EC50 = 440 µM).

Specifications

Application

(+)-Abscisic acid has been used:

• as a supplement for the germination of Arabidopsis thaliana seeds

• as a component of buffered nodulation medium to check its effects on lateral root density (LRD) in leguminous and non-leguminous plants

• as a standard to study its effects on root meristem defects in Medicago truncatula latd mutant

Biochem/physiol Actions

Plant hormone and growth regulator that is involved in several physiological mechanisms including seed dormancy, leaf abscission, stomatal movement, and plant stress responses. Through complex interactions with several intracellular signaling systems, it can regulate the expression of hundreds of plant genes.

Documents

COA

SDS