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植物研究 ›› 2008, Vol. 28 ›› Issue (5): 579-583.doi: 10.7525/j.issn.1673-5102.2008.05.016

• 论文 • 上一篇    下一篇

纽荷尔脐橙CCS基因的克隆与分析

陶能国;张继红   

  1. (湘潭大学化工学院,湘潭 411105)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-09-20 发布日期:2008-09-20
  • 通讯作者: 陶能国
  • 基金资助:
     

Cloning and Analysis of CCS Gene of Newhall Navel Orange

TAO Neng-Guo;ZHANG Ji-Hong   

  1. (College of Chemical Engineering,Xiangtan University,Xiangtan 411105)
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-09-20 Published:2008-09-20
  • Contact: TAO Neng-Guo
  • Supported by:
     

摘要: 利用RT-PCR技术从纽荷尔脐橙果实cDNA中分离出辣椒红/辣椒玉红素合成酶(Capsanthin/Capsorubin synthase,CCS)基因(Ccs)全长。该片断长为1619bp,编码503个氨基酸。BLAST比较其氨基酸同源性发现,该序列所推导的氨基酸与已知的甜橙CCS完全一致,与胡萝卜和辣椒的CCS,以及马铃薯新黄质合成酶(neoxanthin synthase,NSY)有70%的同源性。此外,与番茄和柑橘等的番茄红素环化酶也有50%~70%的同源性。半定量RT-PCR分析表明,Ccs在纽荷尔脐橙果实成熟过程中呈先上升后下降的表达趋势,期间9月份的表达量最高。

关键词: RT-PCR, 柑橘, 辣椒红/辣椒玉红素合成酶, 基因

Abstract: The mRNA sequence for Capsanthin/Capsorubin synthase (CCS) has been cloned from fruits of Newhall navel orange by RT-PCR. Sequencing results revealed that it was 1 619 bp in length, encoding 503 amino acids. BLAST results showed that the deduced amino acids shared the same amino acid sequence as that of Citrus sinensis, 70% identities with CCS of Daucus carota and Capsicum annuum. In addition to 70% identities with neoxanthin synthase (NSY) of Solanum tuberosum, it showed 50%~70% identities with lycopene cyclase of Lycopersicon esculentum and citrus. Semi-quantitative RT-PCR results showed that expressions of Ccs were down-regulated during fruit ripening of Newhall navel orange, with the highest one in September.

Key words: RT-PCR, citrus, Capsanthin/Capsorubin synthase, gene

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