Light Control of Arabidopsis Development Entails Coordinated Regulation of Genome Expression and Cellular Pathways

作者：Ligeng Ma, Jinming Li, Li‐Jia Qu, Janet Hager, Zhangliang Chen, Hongyu Zhao, Xing Wang Deng · 发表于：The Plant Cell · 年份：2001 · DOI：10.1105/tpc.010229 · 被引用次数：571 · 研究领域：Light effects on plants、Plant Molecular Biology Research、Photosynthetic Processes and Mechanisms

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.