Effects on GSH synthesis in Chinese cabbage when the culturing solution is supplemented with ammonium sulfate or the constituent amino acids for glutathione |
| |
Authors: | Ju-Sung Kim Sang-Gyu Seo Sun-Hyung Kim Kenji Usui Ie-Sung Shim |
| |
Institution: | 1. Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, 305-8572, Ibaraki, Japan 2. Research Institute of Natural Resources, Ishikawa Prefectural University, Suematu, Nonoichi, 921-8836, Ishikawa, Japan 3. Department of Environmental Horticulture, University of Seoul, 130-743, Seoul, Korea
|
| |
Abstract: | We examined the effects of the constituent amino acids for glutathione (GSH) — glutamate (Glu), cysteine (Cys), and glycine
(Gly) — on GSH synthesis in Chinese cabbage seedlings. Glu, Cys, and Gly were applied simultaneously (100 mg L-1) to the culture solution for 2 d. When compared with the control, GSH concentrations were increased by 2.1-fold (640.4 nmol
g-1 FW) and 1.5-fold (416.4 nmol g-1 FW) in the first leaf and the roots, respectively. Of all the free amino acids, the non-essentials, including Glu, Cys and
Gly, occupied 95.5% (shoots) and 81.9% (roots) of the total. Cys supplements greatly enhanced the GSH concentration in the
roots; application of 100 mg L-1 increased the level by 7-fold over the control. The activity of GSH synthetase was higher in the roots than in the leaf,
whereas that of y-glutamylcysteine synthetase was higher in the leaf. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|