Figure 1

Light and carbon treatments and their effects on gene expression. (a) Diagrammatic representation of various carbon and light treatments given to plants before microarray analyses. -C-L, no carbon and no light; -C+L, no carbon and 70 μE/m²/sec white light (8 h); +C-L, 1% (w/v) sucrose and no light; +C+L, 1% (w/v) sucrose and 70 μE/m²/sec white light (8 h). (b) Three models showing theoretical interactions between carbon (C) and light (L) that influence the expression of a hypothetical gene (X, Y, or Z). Model 1 shows carbon and light acting independently, model 2 shows the actions of carbon and light dependent on one another, and model 3 shows both dependent and independent interactions between carbon and light. The arrows designate any effect of carbon and/or light on the expression of gene X, Y, or Z, whether it is repressive or inductive.