Figure 7.

Etiolated xct Seedlings Show Altered Transcriptional Responses after Transfer to Light.

(A) Etiolated xct-1 seedlings show a marked upregulation of XCT message in response to red light, which is not apparent in Col or in response to white light.

(B) and (C) In red light (B), xct-2 fails to upregulate LHCB5, whereas white light (C) can overcome this and leads to elevated, early expression of LHCB5 in both xct-1 and xct-2 relative to the wild type. In (B) and (C), LHCB5 expression is normalized to time 0 to facilitate comparison of the induction kinetics. Data are the mean of three technical replicates; se is shown. Results are representative of two biological replicates.