The homozygous T3 transgenic lines with sense OsCBL8 gene and antisense OsCBL8 gene obtained by agro-transformation were used to investigate the function of OsCBL8 in rice. Semi-quantitative RT-PCR showed that the exp...The homozygous T3 transgenic lines with sense OsCBL8 gene and antisense OsCBL8 gene obtained by agro-transformation were used to investigate the function of OsCBL8 in rice. Semi-quantitative RT-PCR showed that the expression of OsCBL8 extremely increased in sense transgenic lines, and decreased to some extents in antisense transgenic lines. Such up- and down-regulation of the OsCBL8 gene in these transgenic lines had little effects on main agronomic traits, but significantly decreased the number of filled grains per panicle and seed setting rate in some of transgenic lines. By evaluation of the tolerance to 150 mmol/L NaCl, 20% PEG6000 and low temperature treatments, and relevant physiological indices, 8F12, a sense transgenic line with high salt tolerance, and 8R14, an antisense transgenic line with high drought tolerance, were obtained, which suggests that the OsCBL8 gene is involved in the response of rice to abiotic stresses.展开更多
基金supported by the Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT)Ph.D. the Program Foundation of Ministry of Education of China (Grant No.20020307036)+1 种基金the Natural Science Foundation of China (Grant Nos.30771329 and 30800677)the Natural Science Foundation of Zhejiang Province,China (Grant No.Y3080359)
文摘The homozygous T3 transgenic lines with sense OsCBL8 gene and antisense OsCBL8 gene obtained by agro-transformation were used to investigate the function of OsCBL8 in rice. Semi-quantitative RT-PCR showed that the expression of OsCBL8 extremely increased in sense transgenic lines, and decreased to some extents in antisense transgenic lines. Such up- and down-regulation of the OsCBL8 gene in these transgenic lines had little effects on main agronomic traits, but significantly decreased the number of filled grains per panicle and seed setting rate in some of transgenic lines. By evaluation of the tolerance to 150 mmol/L NaCl, 20% PEG6000 and low temperature treatments, and relevant physiological indices, 8F12, a sense transgenic line with high salt tolerance, and 8R14, an antisense transgenic line with high drought tolerance, were obtained, which suggests that the OsCBL8 gene is involved in the response of rice to abiotic stresses.
文摘大多数信号转导过程都伴随着细胞内钙离子浓度变化,CBL/CIPK信号系统是近几年在高等植物中发现的一类依赖于钙离子的信号系统,包括感知钙离子浓度变化的CBL蛋白(calcineurin B-like proteins)和与之互作的CIPK蛋白(CBL-interacting protein kinase)。研究表明CBL/CIPK信号系统在植物对逆境应答过程中起重要作用。在介绍CBL和CIPK的结构和特征基础上对不同植物CBL/CIPK信号系统在逆境应答中的研究现状况进行了综述,以期为基因工程改良作物抗逆育种提供新的思路和种质资源。