摘要
[目的]优化根癌农杆菌介导烟草K326遗传转化体系。[方法]以烟草无菌苗的叶片为外植体,通过农杆菌介导法对其遗传转化体系进行了优化研究。[结果]外植体在MS+2mg/L6-BA+0.2mg/LIAA培养基上进行2d预培养后,用农杆菌GV3101(浸染浓度为OD600=0.6)浸染5min,转化效率最高,达63%;经过PCR检测初步证明nptII基因已整合到烟草再生植株中。[结论]该研究建立了高效烟草K326叶片农杆菌介导的遗传转化体系。
[Objective]The aim was to optimize genetic transformation system in tobacco K326 mediated by Agrobacterium.[Method]The leaf of tobacco aseptic seedling was taken as explants to study the optimization of Agrobacterium-mediated genetic transformation system.[Result] The highest transformation efficiency was obtained when the explants were pre-cultured in the medium of MS ＋ 2 mg/L 6-BA ＋ 0.2 mg/L IAA for 2 d,and then infected with Agrobacterium GV3101（OD600 =0.6） for 5 min.The PCR detection proved that npt II gene had been integrated into the regenerated tobacco plants.[Conclusion]A highly efficient genetic transformation system of tobacco leaf mediated by Agrobacterium was established.
关键词
根癌农杆菌
烟草
遗传转化
Agrobacterium tumefaciens
Tobacco
Genetic transformation
