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林业科学 ›› 2010, Vol. 46 ›› Issue (10): 37-41.doi: 10.11707/j.1001-7488.20101006

• 论文 • 上一篇    下一篇

毛竹PeMADS1基因的克隆及转化拟南芥初步研究

高志民1,郑波1,彭镇华1,2   

  1. 国际竹藤网络中心国家林业局竹藤科学与技术重点开放实验室北京100102;2.中国林业科学研究院林业研究所北京100091
  • 收稿日期:2010-04-20 修回日期:2010-07-28 出版日期:2010-10-25 发布日期:2010-10-25
  • 通讯作者: 彭镇华

Isolation of PeMADS1 Gene from Phyllostachys edulis and Its Transformation in Arabidopsis thaliana

Gao Zhimin1;Zheng Bo1;Peng Zhenhua1,2   

  1. 1.Key Laboratory of Bamboo and Rattan Science and Technology of State Forestry AdministrationInternational Center for Bamboo and Rattan Beijing 100102;2.Research Institute of Forestry;Chinese Academy of Forestry Beijing 100091
  • Received:2010-04-20 Revised:2010-07-28 Online:2010-10-25 Published:2010-10-25

摘要:

采用RT-PCR和RACE技术,从毛竹中分离到1个含完整的编码区和5′端非翻译区的cDNA,长776 bp,编码240个氨基酸,命名为PeMADS1(GenBank登记号: EU327784)。序列分析表明,该基因具有典型的植物MADS-box基因结构,与拟南芥的E类功能基因AGL6编码蛋白的一致性为57.2%。将PeMADS1基因置于CaMV 35S启动子控制下,构建PeMADS1基因植物表达载体。应用农杆菌介导将目的基因转入拟南芥,RT-PCR证实PeMADS1基因得到异位表达。转基因拟南芥呈现开花提早、莲座叶卷曲、发育迟缓等表型,表明PeMADS1可能参与毛竹由营养生长转向生殖生长的发育调控。

关键词: 毛竹, MADS-box基因, 异位表达

Abstract:

A cDNA containing an open reading frame and 5′ untranslated regions was isolated from Phyllostachys edulis by reverse transcription polymerase chain reaction (RT-PCR) using degenerate primers and by 5′ rapid amplification of cDNA ends (RACE),and named as PeMADS1 (GenBank accession No. EU327784). PeMADS1 was 776 bp and encoded a protein of 240 aa. The gene had a typical MADS-box gene structure. Homology analysis showed that PeMADS1 shared 57.2% similarity with AGL6, indicating that it belongs to E function genes. The plant expression vector of PeMADS1 gene driven by CaMV 35S promoter was constructed and transferred into Arabidopsis thaliana. Ectopic expression of PeMADS1 was confirmed by RT-PCR. The transgenic plant showed different phenotype such as early flowering,curled rosette or stunt, which indicated that PeMADS1 might participate in regulating the flower development of P. edulis.

Key words: Phyllostachys edulis, MADS-box gene, ectopic expression