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中国农学通报 ›› 2015, Vol. 31 ›› Issue (34): 203-208.doi: 10.11924/j.issn.1000-6850.casb15060142

所属专题: 生物技术

• 生物技术科学 • 上一篇    下一篇

导入TaNHX2基因提高中林美荷杨耐盐性的研究

王亦学1,杜建中1,郝曜山1,张欢欢1,秦永军1,吴家和2,孙 毅1   

  1. (1山西农业科学院生物技术研究中心,太原 030031;2中国科学院微生物研究所,北京 100101)
  • 收稿日期:2015-06-28 修回日期:2015-08-24 接受日期:2015-08-25 出版日期:2015-12-17 发布日期:2015-12-17
  • 通讯作者: 孙毅
  • 基金资助:
    国家转基因生物新品种培育科技重大专项“抗病虫、抗除草剂转基因玉米新品种选育”(2013ZX08003-001);山西农业科学院科技攻关项目“转Cry1Ac基因杨树的获得及其抗虫性鉴定”(2012ygg17)。

Study on Introduction of TaNHX2 Gene to Enhance Salt Tolerance of Populus sp.

Wang Yixue1, Du Jianzhong1, Hao Yaoshan1, Zhang Huanhuan1, Qin Yongjun1, Wu Jiahe2, Sun Yi1   

  1. (1Biotechnology Research Center, Shanxi Academy of Agricultural Sciences, Taiyuan 030031;2Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101)
  • Received:2015-06-28 Revised:2015-08-24 Accepted:2015-08-25 Online:2015-12-17 Published:2015-12-17

摘要: 中林美荷杨具有生长速度快、扦插成活率高及木材材质好等优点,因而倍受欢迎,是西部大开发重点推广的绿化造林树种。为提高该树种的耐盐性,充分适应西北广大地区干旱盐碱地,将小麦耐盐基因TaNHX2导入中林美荷杨基因组中,以提高其的耐盐性。采用叶片和叶柄作为外植体,通过根癌农杆菌(Agrobacterium tumefaciens)介导法,将TaNHX2导入中林美荷杨基因组中,对所获得的杨树转基因植株进行PCR和Southern blotting分析,结果表明TaNHX2基因多以单拷贝整合到受体基因组中。转基因幼苗经过不同浓度的NaCl胁迫处理,表现出一定的耐盐性。中林美荷杨耐盐株系的获得为该树种绿化造林的推广和丰产提供了保障。

关键词: 茶鲜叶, 茶鲜叶, 悬浮发酵, 儿茶素, 聚酯型儿茶素, 茶黄素

Abstract: Zhonglinmeihe is an elite variety of Populus sp. which is fast-growing, and has high yield and high quality of timber. It is important for afforestation programs in the development of China’s western regions. To enhance salt tolerance and widen adaptability of Populus sp. in northwest China, TaNHX2 gene was introduced into the variety through Agrobacterium-mediated transformation with explants of leaf and petiole. Based on PCR and Southern blotting analyses, most transgenic plants showed one copy of insertion of the target gene. Under various concentrations of NaCl treatment, transgenic poplar plants exhibited obvious resistance to salt stress. All in all, transgenic poplar plants with salt tolerance could facilitate afforestation and achieve high yield in northwest China.

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