https://elimusertibinhibitor.c....om/connecting-phytos
Abscisic acid (ABA), a plant hormone synthesized from carotenoids, functions in seed germination and abiotic stress answers. ABA comes from the cleavage of 9-cis-isomers of violaxanthin and neoxanthin, which are oxygenated carotenoids, also called xanthophylls. Although genetics encoding enzymes responsible for many steps associated with the ABA biosynthesis pathway have been identified, enzymatic responses ultimately causing manufacturing among these cis-isomers from trans-violaxanthin