Regulations of granule-bound starch synthase I gene expression in rice leaves by temperature and drought stress

被引：31
|
作者：
Wang, S. J. [1 ]
Liu, L. F. [1 ]
Chen, C. K. [1 ]
Chen, L. W. [1 ]
机构：
[1] Natl Taiwan Univ, Dept Agron, Taipei 106, Taiwan
来源：
BIOLOGIA PLANTARUM | 2006年 / 50卷 / 04期
关键词：
abscisic acid; Oryza sativa;
D O I：
10.1007/s10535-006-0085-2
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Effects of temperature (15/10, 25/20, 30/25, and 35/30 degrees C) and drought stresses on the expression of granule-bound starch synthase I (GBSSI) gene were examined in rice (Oryza sativa L.) seedlings. The GBSSI expression was higher at the low temperature (15/10 degrees C), and the transcript level decreased at temperatures higher than 30 degrees C. Protein phosphorylation was involved in the low temperature-stimulated signal transduction of GBSSI regulation. The expression of GBSSI in rice seedling was reduced under a drought stress. Even though exogenous ABA played a role to reduce the GBSSI transcript accumulation under non-stress condition, the reducing of GBSSI expression by drought stress appeared to be mediated by an ABA-independent pathway.
引用
收藏
页码：537 / 541
页数：5
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