Question

Effects of Abscissic acid- Write short notes.

Answer 1

Role of abscisic acid in plant stress tolerance. The phytohormone abscisic acid (ABA) plays a regulatory role in many physiological processes in plants. Different stress conditions such as water, drought, cold, light, and temperature result in increased amounts of ABA.Abstract. Abscisic acid (ABA) is an effective inhibitor of cell elongation in excised embryonic bean axes whether added prior to or after the initiation of cell elongation. ... Our results suggest that the inhibition of growth in the axes by ABA is not due to its inhibition of DNA synthesis.Its other names are abscissin II and inhibitor-B. Abscisic acid is a mildly acidic dextrorotatory cis sesquiterpene growth hormone which functions as a general growth inhibitor by counteracting other hormones (auxin, gibberellins, and cytokinins

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