Today, lets learn something simple about Abscisic acid!!


Abscisic Acid

Abscisic (ABA)is a naturally occurring compound in plants. It is partially produced via the mevalonic pathway in chloroplasts and other plastids.

Functions of Abscisic Acid

Stimulates the closure of stomata in order to reduce transpiration and prevent water loss.
(water stress brings about an increase in ABA synthesis).

Inhibits shoot growth but will not have as much affect on roots, and may even promote the growth of roots.

Induces seeds to synthesize storage proteins.

Encourages seed dormancy by inhibiting cell growth – inhibits seed germination

Inhibits the effect of gibberellins(we'll explore this hormone in our fifth edition) on stimulating of new synthesis of a-amylase.

Decreases metabolism in response to a newly-developing deficiency of nutrient or adverse environmental condition, such that the condition becomes survivable at the new lower level of metabolism

Induces gene transcription especially for proteinase inhibitors in response to wounding which may explain an apparent role in pathogen(any disease-producing agent)
defense.

Man! Not only do humans and animals have this complex corrective system of homeostasis, even our plants possess this incredible mechanism.

So stay tune to learn more about plant hormones from yours truly, Doctor Guru!!