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Synthesized from the 5-carbon precursors isopentenyl diphosphate and dimethylallyl diphosphate; includes the carotenoids, which are precursors of vitamin A and also possess antioxidant effects.
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Abscisic acid (Dormin CAS 21293-29-8) is a plant hormone involved in regulating plant growth development and stress responses Its activity includes mediating seed dormancy germination control lateral root formation and adaptive responses to abiotic stress Mechanistically ABA influences histone H2B ubiquitination and chromatin remodeling processes thereby modulating gene expression during seed maturation and under environmental stress ABA signaling also alters cellular redox status by enhancing synthesis of antioxidants such as -tocopherol and L-ascorbate It is widely utilized in plant biology research to study stress physiology developmental biology and epigenetic gene regulation
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