RT Journal Article
SR Electronic
T1 Light Control of Arabidopsis Development Entails Coordinated Regulation of Genome Expression and Cellular Pathways
JF The Plant Cell
JO Plant Cell
FD American Society of Plant Biologists
SP 2589
OP 2607
DO 10.1105/tpc.010229
VO 13
IS 12
A1 Ma, Ligeng
A1 Li, Jinming
A1 Qu, Lijia
A1 Hager, Janet
A1 Chen, Zhangliang
A1 Zhao, Hongyu
A1 Deng, Xing Wang
YR 2001
UL http://www.plantcell.org/content/13/12/2589.abstract
AB An expressed sequence tag–based microarray was used to profile genome expression underlying light control of Arabidopsis development. Qualitatively similar gene expression profiles were observed among seedlings grown in different light qualities, including far-red, red, and blue light, which are mediated primarily by phytochrome A, phytochrome B, and the cryptochromes, respectively. Furthermore, light/dark transitions also triggered similar differential genome expression profiles. Most light treatments also resulted in distinct expression profiles in small fractions of the expressed sequence tags examined. The similarly regulated genes in all light conditions were estimated to account for approximately one-third of the genome, with three-fifths upregulated and two-fifths downregulated by light. Analysis of those light-regulated genes revealed more than 26 cellular pathways that are regulated coordinately by light. Thus, light controls Arabidopsis development through coordinately regulating metabolic and regulatory pathways.