| Abstract Detail
Metabolism Igarashi, Daisuke [1], Ishizaki, Takashi [2], Dokiya, Yuko [2], Totsuka, Kazuhiko [2], Ohsumi, Chieko [2]. Identification of key enzymes for the regulation of amino acid metabolism. Amino acids perform essential functions in both primary and secondary metabolism. We are studying to define the pathways and to uncover the regulatory mechanisms of amino acid biosynthesis and metabolism in plants. To investigate the function of photoresipiratory amino acid metabolisms, we generated and analyzed the overexpression plants of glutamate glyoxylate aminotransferase (GGAT) and glutamate synthase (Fd-GOGAT) genes. Amino acid profiling of these transgenic plants altered drastically, suggesting that these enzymes are essential factor for the regulation of amino acid contents. We also analyzed the regulation of expression of the gene encoding major amino acid metabolic enzymes (e.g. Glu and Gln metabolisms). In addition to nutrition and light signal, plant hormone affected the gene expression of these genes.
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1 - Institute of Life Sciences, Ajinomoto Co., Inc., Suzuki-cho 1-1, Kawasaki, Kanagawa, 210-8681, Japan
2 - Institute of Life Sciences, Ajinomoto Co., Inc.
Keywords:
nitrogen and carbon metabolism
photorespiration
amino acid.
Presentation Type: Plant Biology Abstract
Session: P
Location: Exhibit Hall (Northeast, Southwest & Southeast)/Hilton
Date: Sunday, July 8th, 2007
Time: 8:00 AM
Number: P19006
Abstract ID:191 |
