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园艺学报 ›› 2008, Vol. 35 ›› Issue (10): 1527-1532.

• 研究简报 • 上一篇    下一篇

白姜花倍半萜合成酶基因的克隆及表达

李瑞红1,范燕萍1*,余让才2,陆旺金1,庄楚雄2
  

  1. (1华南农业大学园艺学院,广州510642;2华南农业大学生命科学学院,广州510642)
  • 收稿日期:2008-03-14 修回日期:2008-08-26 出版日期:2008-10-25 发布日期:2008-10-25
  • 通讯作者: 范燕萍

Molecular Cloning and Expression of Sesquiterpenoid Synthase Gene in Hedychium coronarium Koenig

LI Rui-hong1;FAN Yan-ping1*;YU Rang-cai2;LU Wang-jin1;and ZHUANG Chu-xiong2
  

  1. (1College of Horticulture,2College of Life Science, South China Agricultural University,Guangzhou 510642, China)
  • Received:2008-03-14 Revised:2008-08-26 Online:2008-10-25 Published:2008-10-25
  • Contact: FAN Yan-ping

摘要: 以白姜花的叶片为材料,通过RT-PCR与RACE相结合的方法,克隆到一个倍半萜合成酶基因的cDNA序列,其全长为1 932 bp,基因编码区共1 653 bp,编码551个氨基酸,命名为Hc-Sesqui。该基因编码蛋白的氨基酸序列与姜和玉米中的倍半萜合成酶有较高的同源性,并且含有DDXXD保守序列。通过Clustal.X进行序列分析,确定该基因属于植物萜类合成酶基因家族中的Tps-a亚族。Northern杂交的结果表明,该基因在茎、叶和萼片中均有表达。

关键词: 白姜花, 倍半萜合成酶, 基因克隆, 表达

Abstract: A TPS gene named as Hc-Sesqui was isolated from H.coronarium leaf. The complete sequence of the cDNA gene was 1 932 bp, with an ORF encoding 551 amino acids. The amino acids sequence shared highly homology to other sesquiterpenoid synthase, containing conserved boxes of: TPS DDXXD. The phylogenetic analysis after Clustal.X alignment suggested that the Hc-Sesqui belonged to Tps-a. Northern blot revealed that the Hc-Sesqui gene was expressed in leaf, stem and sepal.

Key words: Hedychium coronarium Koenig, sesquiterpenoid synthase, gene cloning, expression

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