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核农学报  2014 

根癌农杆菌介导的葡萄遗传转化体系的优化

DOI: 10.11869/j.issn.100-8551.2014.07.1169, PP. 1169-1174

Keywords: 葡萄,根癌农杆菌,遗传转化,npt-Ⅱ基因

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Abstract:

以梅鹿辄葡萄离体叶片为转化材料,对根癌农杆菌介导的遗传转化过程中涉及的几个主要影响因素:抗菌素羧苄青霉素(Carb)的浓度、乙酰丁香酮(AS)的浓度、农杆菌菌液的浓度及卡那霉素筛选压进行优化。结果表明,抗菌素羧苄青霉素在浓度300mg·L-1下即可有效去除农杆菌,且对胚性愈伤组织的分化的影响不大;乙酰丁香酮(AS)的最适浓度为50μm·L-1;农杆菌菌液的浓度控制在OD6000.5~0.7时转化率最高;卡那霉素的筛选浓度控制在100mg·L-1。利用优化的农杆菌介导法进行转化,对再生苗进行PCR检测,结果显示,外源基因已导入了葡萄基因组中。本研究优化了农杆菌介导的葡萄遗传转化影响因素,并获得了转基因植株。

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