为筛选出黄籽油菜遗传转化中卡拉霉素或卡拉霉素(kanamycin ,Kan or km )最佳质量浓度,首先将油菜子叶接种在不同质量浓度Kan(0~180 mg/L)的分化培养基上,结果发现Kan质量浓度小于60 mg/L有利于绿苗分化。然后在不同质量浓度...为筛选出黄籽油菜遗传转化中卡拉霉素或卡拉霉素(kanamycin ,Kan or km )最佳质量浓度,首先将油菜子叶接种在不同质量浓度Kan(0~180 mg/L)的分化培养基上,结果发现Kan质量浓度小于60 mg/L有利于绿苗分化。然后在不同质量浓度Kan的分化培养基上对农杆菌侵染的下胚轴进行筛选,结果表明初代培养Kan质量浓度以20~40 mg/L为宜,同样质量浓度继代培养后可获得抗性愈伤和转基因阳性苗。最后利用Kan抗性对转基因黄籽油菜后代进行研究,苗期到薹花期生长的植株进行叶片涂抹法筛选,Kan最适质量浓度为4 g/L ,时间为4~10 d;T1代抗性分析、GUS染色分析、T1代籽粒的PCR检测说明转基因在T1代、T2代可遗传并出现分离。β葡萄糖苷酸酶基因(GUS)和聚合酶链式反应(PCR)验证叶片涂抹进行Kan抗性筛选的方法准确性高,可达100%。展开更多
[Objective] The callus induction of wild Arabidopsis thaliana leaves was studied.[Method] As explants,leaf segments of wild A.thaliana were inoculated in MS medium including 6-BA and NAA with different concentration,a...[Objective] The callus induction of wild Arabidopsis thaliana leaves was studied.[Method] As explants,leaf segments of wild A.thaliana were inoculated in MS medium including 6-BA and NAA with different concentration,and studying the callus induction and regenerated plant of A.thaliana.[Result]6-BA was necessary for callus induction,but higher concentration resulted into vitrification easily;single use of NAA was beneficial to rooting,and bud differentiation was easy in the medium with NAA and 6-BA;the optimum medium of callus induction was MS +0.5 mg/L 6-BA +0.10 mg/L NAA,with the callus induction frequency of 100%.[Conclusion]Our study could lay a foundation for the genetic transformation and cell culture of A.thaliana.展开更多
基金Supported by Basic Scientific Research Special Found of Central College(100030-2120131106)~~
文摘[Objective] The callus induction of wild Arabidopsis thaliana leaves was studied.[Method] As explants,leaf segments of wild A.thaliana were inoculated in MS medium including 6-BA and NAA with different concentration,and studying the callus induction and regenerated plant of A.thaliana.[Result]6-BA was necessary for callus induction,but higher concentration resulted into vitrification easily;single use of NAA was beneficial to rooting,and bud differentiation was easy in the medium with NAA and 6-BA;the optimum medium of callus induction was MS +0.5 mg/L 6-BA +0.10 mg/L NAA,with the callus induction frequency of 100%.[Conclusion]Our study could lay a foundation for the genetic transformation and cell culture of A.thaliana.
基金This work was supported by the National High Technology Research and Development Program (863 Program) and Open Project for Visiting Scholar in National Key Laboratory of Crop Genetic Improvement.