生物技术通报 ›› 2012, Vol. 0 ›› Issue (12): 88-92.

• 研究报告 • 上一篇    下一篇

建兰Actin 基因cDNA 全长的克隆及其表达分析

吴菁华, 吴少华, 杨超   

  1. 福建农林大学园艺学院,福州 350002
  • 收稿日期:2012-05-16 修回日期:2013-01-25 出版日期:2012-12-26 发布日期:2013-02-06
  • 作者简介:吴菁华, 女, 讲师, 研究方向:园艺植物遗传育种;E-mail:wjhham@yahoo.com.cn
  • 基金资助:
    : 福建省自然科学基金项目(2009J01066)

Cloning and Expression Analysis of CeActin Homologous Gene from Cymbidium ensifolium

Wu Jinghua, Wu Shaohua, Yang Chao   

  1. College of Horticulture,Fujian Agriculture and Forestry University,Fuzhou 350002
  • Received:2012-05-16 Revised:2013-01-25 Published:2012-12-26 Online:2013-02-06

摘要: 根据单子叶植物的肌动蛋白基因(Actin)的保守区序列设计引物,采用RT-PCR 和RACE 技术从建兰(Cymbidium ensifolium)中分离出Actin 基因cDNA 全长。序列分析结果表明,建兰Actin 基因长度为1 434 bp,编码区长度为1 134 bp,编码377 个氨基酸,将其命名为CeActin,GenBank 登录号为JN613147。CeActin 推导的氨基酸序列与其他植物的同源性都较高,具有高度的保守性。采用半定量RT-PCR 技术分析CeActin 在建兰各组织及花不同发育时期的表达情况,结果表明,表达量没有明显差异,表明CeActin基因可作为内参基因。

关键词: 建兰, 肌动蛋白基因, 克隆, 表达分析

Abstract: The full-length cDNA sequence of Actin gene from the bud of Cymbidium ensifolium was cloned(GenBank accessionnumber: JN613147)by using RT-PCR and RACE with degenerate primer which were synthesized based on the high homologous region amongthe sequences of several monocotyledon Actin genes. The full length cDNA of CeActin was 1 434 bp with an ORF of 1 134 bp encoding a proteinwith 377 amino acids. Homology search showed that this gene shared high identity with other Actins. Semi-quantitative RT-PCR analysis showedthat the expression of CeActin had no notable difference in different tissues and different floral development stages. The results laid basis foridentification of gene transcription level in Cymbidium ensifolium using CeActin as internal control.

Key words: Cymbidium ensifolium, Actin gene, Cloning, Expression analysis