Growth and Development of Horticultural Crops (1+1)

Biosynthesis of ABA in plants

• Extensive studies done by researchers with ABA deficient mutant of tomato, Arabidopsis and other plants have clearly shown that ABA is synthesized in higher plants not from simple terpenoid precursors directly through 15-C farnesyl diphosphate (FPP), but indirectly through carotenoid pathway as breakdown product of 40-C xanthophylls such as violaxanthin or neoxanthin.





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