Activation of gamma-Aminobutyrate Production by Chloroplastic H2O2 Is Associated with the Oxidative Stress Response

作者：Maruta Takanori; Ojiri Megumi; Noshi Masahiro; Tamoi Masahiro; Ishikawa Takahiro; Shigeoka Shigeru^*

来源：Bioscience Biotechnology and Biochemistry, 2013, 77(2): 422-425.

DOI：10.1271/bbb.120825

• reactive oxygen species
• oxidative stress
• gamma-aminobutyrate
• chloroplast
• Arabidopsis

We isolated an Arabidopsis knockout line lacking glutamate decarboxylase 1 (GAD1), one that produced gamma-aminobutyrate (GABA), as an oxidative stress-insensitive mutant, and found that chloroplastic H2O2 enhances GAD1 expression and GABA levels. This suggests a possible relationship between GABA metabolism and the chloroplastic H2O2-mediated stress response.

• 出版日期2013-2