细胞质雄性不育(cytoplasmic male sterility,CMS)是由于核基因组与细胞质基因组之间不协调互作导致的一种雄性器官异常而雌器官可以接受外来花粉正常结实的自然现象。在生产上,CMS是植物杂交制种的有力工具和杂种优势利用的重要途径。...细胞质雄性不育(cytoplasmic male sterility,CMS)是由于核基因组与细胞质基因组之间不协调互作导致的一种雄性器官异常而雌器官可以接受外来花粉正常结实的自然现象。在生产上,CMS是植物杂交制种的有力工具和杂种优势利用的重要途径。对CMS分子机制的解析是其有效利用的基础,一直以来都是研究的热点,然而其机制研究却相对滞后。该文从线粒体嵌合基因(orfs)形成、特征及分类,基因转录后修饰(RNA编辑)的特点及与CMS的关系,基因翻译产物特征、分类及其与CMS的关系等3个方面综述了近年来植物胞质雄性不育的机制研究进展,以期为进一步深入解析其分子机制提供理论参考。展开更多
To obtain the helper plasmids for a reverse genetics system of rabies virus, the cDNAs of the complete open reading frames of the N, P, G, and L genes of rabies street virus stain HN10 were each cloned into expression...To obtain the helper plasmids for a reverse genetics system of rabies virus, the cDNAs of the complete open reading frames of the N, P, G, and L genes of rabies street virus stain HN10 were each cloned into expression vector pVAX1, These four plasmids were identified by restriction enzyme digestion and gene sequencing. The plasmid encoding the N protein was selected to determine the expression effect of these plasmids in NA cells. The results showed that the helper plasmids for a reverse genetics system of rabies street virus strain HN10 had been successfully constructed.展开更多
文摘细胞质雄性不育(cytoplasmic male sterility,CMS)是由于核基因组与细胞质基因组之间不协调互作导致的一种雄性器官异常而雌器官可以接受外来花粉正常结实的自然现象。在生产上,CMS是植物杂交制种的有力工具和杂种优势利用的重要途径。对CMS分子机制的解析是其有效利用的基础,一直以来都是研究的热点,然而其机制研究却相对滞后。该文从线粒体嵌合基因(orfs)形成、特征及分类,基因转录后修饰(RNA编辑)的特点及与CMS的关系,基因翻译产物特征、分类及其与CMS的关系等3个方面综述了近年来植物胞质雄性不育的机制研究进展,以期为进一步深入解析其分子机制提供理论参考。
基金National High Technology Research and Development Program of China (2006AA02Z110, 2007AA02Z402)Major Program of the National Natural Science Foundation of China (30630049)
文摘To obtain the helper plasmids for a reverse genetics system of rabies virus, the cDNAs of the complete open reading frames of the N, P, G, and L genes of rabies street virus stain HN10 were each cloned into expression vector pVAX1, These four plasmids were identified by restriction enzyme digestion and gene sequencing. The plasmid encoding the N protein was selected to determine the expression effect of these plasmids in NA cells. The results showed that the helper plasmids for a reverse genetics system of rabies street virus strain HN10 had been successfully constructed.
