利用PMI选择标记进行杨树转基因体系的研究

[目的]利用不同于抗生素的PMI为选择标记基因的遗传转化体系,对杨树进行双抗虫基因(Bt和Cp TI)的转基因研究。建立杨树以PMI为安全标记基因的转基因体系,为安全、高效的林木转基因育种研究提供实验依据。[方法]选择已有的转Cp TI抗虫基因(利用Kmr选择标记获得)的美洲黑杨杂种优良无性系南林895杨(Populus×euramericana‘Nanlin895’)为受体材料,对杨树叶片、叶片分化芽、茎段生根的甘露糖敏感性等筛选优化,采用农杆菌介导的方法进行双抗虫基因的研究。[结果]较为适合的杨树叶片筛选培养基为:甘露糖8 g·L^-1和蔗糖22 g·L^-1;叶片分化芽筛选培养基为:甘露...

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Bibliographic Details
Published in林业科学研究 Vol. 29; no. 2; pp. 221 - 226
Main Author 查琳 王伟东 续晨 诸葛强
Format Journal Article
LanguageChinese
Published 无锡市林木种苗管理站,江苏 无锡 214000%南京林业大学南方现代林业协同创新中心,江苏 南京,210037%南京晓庄学院生命科学系,江苏 南京,210000 2016
南京林业大学南方现代林业协同创新中心,江苏 南京 210037
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ISSN1001-1498

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Summary:[目的]利用不同于抗生素的PMI为选择标记基因的遗传转化体系,对杨树进行双抗虫基因(Bt和Cp TI)的转基因研究。建立杨树以PMI为安全标记基因的转基因体系,为安全、高效的林木转基因育种研究提供实验依据。[方法]选择已有的转Cp TI抗虫基因(利用Kmr选择标记获得)的美洲黑杨杂种优良无性系南林895杨(Populus×euramericana‘Nanlin895’)为受体材料,对杨树叶片、叶片分化芽、茎段生根的甘露糖敏感性等筛选优化,采用农杆菌介导的方法进行双抗虫基因的研究。[结果]较为适合的杨树叶片筛选培养基为:甘露糖8 g·L^-1和蔗糖22 g·L^-1;叶片分化芽筛选培养基为:甘露糖10 g·L^-1和蔗糖20 g·L^-1;茎段生根筛选培养基:甘露糖8 g·L^-1和蔗糖22 g·L^-1。在此基础上,获得了转Bt和Cp TI双抗虫基因的植株8株。[结论]初步建立了以PMI为安全标记基因的杨树转基因体系:确定了PMI筛选的最适选择压,成功构建了含PMI选择标记基因的植物抗虫表达载体,通过农杆菌介导的遗传转化最终获得了转双抗虫基因植株。
Bibliography:11-1221/S
[Objective]Using the PMI different from antibiotic marker gene as selective marker gene to study poplar transgenic system with two insect-resistant genes( Bt and Cp TI) and provide experimental data for high-efficient and safe transgenic tree breeding. [Method] Populus × euramericana ‘Nanlin895 'genetically modified by Cp TI obtained by using Kmrselective marker was chosen as a receipt,and the mannose sensitivity of poplar leaves,bud growth and stem rooting in a medium were tested for studying poplar transgenic system with two insect-resistant genes by way of Agrobacterum-mediated transformation. [Result] The suitable composition for genetic transformation of poplar leaves was: Mannose 8 g·L~(-1)+ Sucrose 22 g·L~(-1); for bud growth: Mannose 10 g·L~(-1)+ Sucrose 20 g·L~(-1); and for stem rooting: Mannose 8 g·L~(-1)+ Sucrose 22 g·L~(-1). Based on the results,eight transgenic plants with Bt and Cp TI genes we obtained. [Conclusion]The transgenic system of poplar was initially established by use of bios
ISSN:1001-1498