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Identification of CpTI Gene Integration for 2-year-old Transgenic Poplar sat DNA Level 预览
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作者 ZhangQian LinShanzhi +4 位作者 LinYuanzhen ZhangZhiyi LiuHaijun ZouYening WangZeliang 《中国林学:英文版》 CAS 2004年第3期 15-19,共5页
The putative transgenic hybrid triploid poplars [(P. Tomentosa × P. Bolleana) × P. Tomentosa] with CpTI gene have been outplanted in test field for 2 years. Although the authors' previous studies have pr... The putative transgenic hybrid triploid poplars [(P. Tomentosa × P. Bolleana) × P. Tomentosa] with CpTI gene have been outplanted in test field for 2 years. Although the authors' previous studies have proved that they are highly resistant to 3 species of poplar-threatening insect pests and contain high content of CpTI protein in foliage, incorporation status of foreign CpTI gene in poplar genome is uncertain. In this present study, the incorporation of foreign CpTI gene in genome of 5 transgenic poplars was confirmed by PCR and Southern blotting analysis. DNA amplification showed that there were clear DNA bands of about 450bp specific to CpTI gene in transgenic lanes, while no corresponding band in non-transgenic lane was observed. Correspondingly, clear DNA hybridization signals and no signal were exhibited on film for DNA Southern blotting analysis in transgenic lanes and non-transgenic lane, respectively, which further confirmed the stable integration of foreign CpTI gene in genome of 2-year-old transgenic poplar. 展开更多
关键词 白杨树 转基因 脱氧核糖核酸 豇豆胰蛋白酶抑制子
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