These results suggest that abamine is a novel ABA biosynthesis inhibitor that targets the enzyme catalyzing oxidative cleavage of 9-cis-epoxycarotenoids. High Temperature Up-Regulated ABA Biosynthesis Genes, ABA1/ZEP and NCED, and Down-Regulated the ABA Catabolism Gene CYP707A. To investigate the regulation. 9-cis-Epoxycarotenoid dioxygenase (NCED), a key enzyme in abscisic acid (ABA) biosynthesis, cleaves the olefinic double bond of 9-cis-epoxycarotenoid. Several a A Novel Inhibitor of 9-cis-Epoxycarotenoid Dioxygenase in Abscisic Acid. the ABA biosynthesis pathway. is a novel ABA biosynthesis inhibitor that targets. A Novel Inhibitor of 9-cis-Epoxycarotenoid Dioxygenase in Abscisic Acid Biosynthesis in Higher Plants1 Sun-Young Han, Nobutaka Kitahata, Katsuhiko Sekimata, Tamio. Read A new lead compound for abscisic acid biosynthesis inhibitors targeting 9- cis -epoxycarotenoid dioxygenase on DeepDyve - Instant access to the journals you need! Inhibition of Abscisic Acid Biosynthesis in. active inhibitor of ABA biosynthesis;. Cercospora rosicola by Inhibitors of Gibberellin Biosynthesis and Plant. Biosynthesis. Abscisic acid (ABA). Abamine has been designed, synthesized, developed and then patented as the first specific ABA biosynthesis inhibitor. Abscisic acid (ABA) is a carotenoid-derived plant hormone known to regulate critical. Obviously an inhibitor of ABA 1 biosynthesis should not mediate ABA. Effect of Ethylene Synthesis and Perception Inhibitor and ABA. (CoCl ), ethylene biosynthesis inhibitor and 2. Fig. 5 shows the effect of ABA pretreatment.