Figure 1.

Environmental and developmental cues mediate gene expression and transcriptional activity during seed development.

Environmental signals affect embryogenesis as well as phytohormones and sugar levels, which also control embryogenesis. Developmental signals significantly affect the LAFL network (which includes LEC1, LEC2, L1L, ABI3, and FUS3), WRI1 and its interacting partners, and other transcription factors, leading to dynamic transcriptional regulation of plant oil biosynthetic pathways. Epigenetic regulators such as CURLY LEAF (CLF) and PICKLE (PKL) also determine the transcription levels of several key regulators in the LAFL network and WRI1. The combined transcriptional regulation leads to responsive metabolic readout, resulting in alteration of oil content and composition.