The Effect of Polyethylene Glycol on Proline Accumulation in Rice Leaves |
| |
Authors: | SY Hsu YT Hsu CH Kao |
| |
Institution: | (1) Department of Agronomy, National Taiwan University, Taipei, 106, Taiwan, Republic of China |
| |
Abstract: | The regulation of proline accumulation in polyethylene glycol (PEG, –1.5 MPa) treated rice leaves was investigated. PEG treatment resulted in a decrease in relative water content, indicating that PEG treatment caused water stress in rice leaves. Proline accumulation caused by PEG was related to protein hydrolysis, an increase in ornithine- -amino- transferase activity, an increase in the content of ammonia, and an increase in the contents of the precursors of proline biosynthesis, glutamic acid, ornithine, and arginine. Results also show that abscisic acid accumulation is not required for proline accumulation in PEG-treated rice leaves. |
| |
Keywords: | abscisic acid arginine glutamic acid ornithine ornithine- -aminotransferase" target="_blank">gif" alt="delta" align="BASELINE" BORDER="0">-aminotransferase Oryza sativa relative water content water stress |
本文献已被 SpringerLink 等数据库收录! |
|