Two Arabidopsis 3-ketoacyl CoA synthase genes, KCS20 and KCS2/DAISY, are functionally redundant in cuticular wax and root suberin biosynthesis, but differentially controlled by osmotic stress.

Abstract excerpt

Very-long-chain fatty acids (VLCFAs) are essential precursors of cuticular waxes and aliphatic suberins in roots. The first committed step in VLCFA biosynthesis is condensation of C(2) units to an acyl CoA by 3-ketoacyl CoA synthase (KCS). In this study, two KCS genes, KCS20 and KCS2/DAISY, that showed higher expression in stem epidermal peels than in stems were isolated. The relative expression of KCS20 and...

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