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Author (up) Kim, D.S.; Cho, D.S.; Park, W.-M.; Na, H.J.; Nam, H.G. file  url
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  Title Proteomic pattern-based analyses of light responses in Arabidopsis thaliana wild-type and photoreceptor mutants Type Journal Article
  Year 2006 Publication Proteomics Abbreviated Journal Proteomics  
  Volume 6 Issue 10 Pages 3040-3049  
  Keywords Arabidopsis/metabolism/*radiation effects; Arabidopsis Proteins/*biosynthesis; Cluster Analysis; Electrophoresis, Gel, Two-Dimensional; *Light; Photosynthetic Reaction Center Complex Proteins/*genetics/physiology; Phytochrome/genetics/physiology; Proteome/*biosynthesis; Signal Transduction  
  Abstract Light critically affects the physiology of plants. Using two-dimensional gel electrophoresis, we used a proteomics approach to analyze the responses of Arabidopsis thaliana to red (660 nm), far-red (730 nm) and blue (450 nm) light, which are utilized by type II and type I phytochromes, and blue light receptors, respectively. Under specific light treatments, the proteomic profiles of 49 protein spots exhibited over 1.8-fold difference in protein abundance, significant at p <0.05. Most of these proteins were metabolic enzymes, indicating metabolic changes induced by light of specific wavelengths. The differentially-expressed proteins formed seven clusters, reflecting co-regulation. We used the 49 differentially-regulated proteins as molecular markers for plant responses to light, and by developing a procedure that calculates the Pearson correlation distance of cluster-to-cluster similarity in expression changes, we assessed the proteome-based relatedness of light responses for wild-type and phytochrome mutant plants. Overall, this assessment was consistent with the known physiological responses of plants to light. However, we also observed a number of novel responses at the proteomic level, which were not predicted from known physiological changes.  
  Call Number Serial 275  
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