生物技术通报 ›› 2013, Vol. 0 ›› Issue (2): 100-105.

• 研究报告 • 上一篇    下一篇

根癌农杆菌介导甘蔗遗传转化Bt(cry1Ab)基因

李晓梅1 王闵霞2 秦廷豪1 阳翠1 安琪1 张军1   

  1. (1. 四川省植物工程研究院生物技术研究所,资中 612400; 2. 四川省农业科学研究院生物与核技术研究所,成都 610000)
  • 收稿日期:2012-07-30 修回日期:2013-02-27 出版日期:2013-02-26 发布日期:2013-02-27
  • 作者简介:李晓梅,女,硕士,助理研究员,研究方向:蔬菜学;E-mail :lxmusl@126.com
  • 基金资助:
    四川省科技计划项目(2010CJY0047)

Genetic Transformation of Bt(cry1Ab)Gene into Sugarcane(Saccharum officinarum L.)Mediated by Agrobacterium tumefaciens

Li Xiaomei1 Wang Minxia2 Qin Tinghao1 Yang Cui1 An Qi1 Zhang Jun1   

  1. (1. Biotechnology Institute of Sichuan Plant Engineering Academy,Zizhong 612400 ;2. Biotechnology and Nuclear Institute of Sichuan Agricultural Academy,Chengdu 610000)
  • Received:2012-07-30 Revised:2013-02-27 Published:2013-02-26 Online:2013-02-27

摘要: 以自育甘蔗品种“川蔗23 号”诱导的胚性愈伤为受体材料,首次用较低的根癌农杆菌侵染浓度(OD600=0.1 左右)与较短的侵染时间(1.5 min)成功实现甘蔗遗传转化Bt(cry1Ab)基因。结果表明,胚性愈伤分化与小芽生根最适潮霉素筛选浓度分别为20 mg/L 和30 mg/L ;愈伤组织胚性的一致性是影响筛选阶段愈伤再生的重要因素,培养40 d 的愈伤组织为转化最适受体;转化材料经连续的潮霉素抗性筛选后,获得65 株抗性植株,通过特异性引物的PCR 扩增检测,有2 株获得阳性条带,初步表明目的基因已整合到甘蔗染色体基因组中。

关键词: 甘蔗, 遗传转化, Bt(cry1Ab)基因

Abstract: In this research, embryonic callus induced from sugarcane(Saccharum officinarum L.)cultivar “Chuanzhe 23” was selected as recipient material. We successfully transformed anti-insect gene Bt(cry1Ab)into sugarcane mediated by Agrobactenum tumefaciens EHA105 when the explants infected with lower concentration of Agrobactenum tumefaciens(OD ≈ 0.1)and shorter infusion time(1.5 min). The optimal concentrations of hygromycin for the selection of transformed shoots and roots induction respectively were 20 mg/L and 30 mg/L. The calli cultured for 40 d were optimal for transformation; 65 transformants were obtained after successive hygromycin resistance selection. The hyg-resistant plants were detected by PCR analysis, and 2 plants showed positive, which initially proved that the target gene had been integrated into sugarcane genome.

Key words: Sugarcane(Saccharum officinarum L.), Genetic transformation, Bt(cry1Ab)gene