Abscisic Acid Stimulation of Suberization

Abscisic Acid Signal Transduction.

The plant hormone abscisic acid (ABA) plays a major role in seed maturation and germination, as well as in adaptation to abiotic environmental stresses. ABA promotes stomatal closure by rapidly altering ion fluxes in guard cells. Other ABA actions involve modifications of gene expression, and the analysis of ABA-responsive promoters has revealed a diversity of potential cis-acting regulatory el...

Members of the abscisic acid co-receptor PP2C protein family mediate salicylic acid-abscisic acid crosstalk

Abscisic acid receptors.

Abscisic acid (ABA), a sesquiterpenoid phytohormone, was first discovered in the 1960s, and has since been found to be a key regulator of such diverse processes as dormancy, germination, seed development, and responses to biotic and abiotic stress (Cutler et al., 2010). Since the discovery of its structure, advances have been made in understanding ABA metabolism, synthesis, and hormone-responsi...

Abscission: role of abscisic Acid.

The effect of abscisic acid on cotton (Gossypium hirsutum L. cv. Acala 4-42) and bean (Phaseolus vulgaris L. cv. Red Kidney) explants was 2-fold. It increased ethylene production from the explants, which was found to account for some of its ability to accelerate abscission. Absci is acid also increased the activity of cellulase. Increased synthesis of cellulase was not du to an increase in agin...

Sucrose Promotes Strawberry Fruit Ripening by Stimulation of Abscisic Acid Biosynthesis

The interaction of sugar with ABA plays an important role in many aspects of plant growth and development. Although glucose is reported to act as a signal molecular to promote abscisic acid (ABA) biosynthesis, whether sucrose can also serve as a signal molecule involved in ABA biosynthesis is yet unclear. Here, we showed that soluble sugars, especially sucrose, could accelerate strawberry fruit...