Simplified diagrams illustrating the pathway for oil metabolism in developing Arabidopsis seeds (A) and three T-DNA constructs designed to manipulate different stages in the pathway by seed-specific overexpression of WRI1, DGAT1, and RNAi suppression of SDP1 (B). E.R., Endoplasmic reticulum; FA-CoA, fatty acyl-CoA; FAS, fatty acid synthase; LB, left border; PEP, phosphoenolpyruvate; RB, right border.