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园艺学报 ›› 2005, Vol. 32 ›› Issue (5): 807-811.

• 研究论文 • 上一篇    下一篇

香蕉ACC氧化酶基因(MAO3)的克隆及其表达特性分析

黄俊生;王 华;张世清   

  1. (1 中国热带农业科学院环境与植物保护研究所, 儋州571737; 2 中国热带农业科学院热带生物技术研究所热带作物生物技术国家重点实验室, 海口571101)
  • 收稿日期:2004-12-01 修回日期:2005-02-02 出版日期:2005-10-25 发布日期:2005-10-25

Cloning and Expression Analysis of Banana ACC Oxidase Gene (MAO3)

Huang Junsheng;Wang Hua;Zhang Shiqing   

  1. (1 Enviroment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou 571737, China;2 State Key Laboratory of Tropical Crop Biotechnology, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China)
  • Received:2004-12-01 Revised:2005-02-02 Online:2005-10-25 Published:2005-10-25

摘要: 根据同源扩增得到香蕉(Musa acuminata) ACC氧化酶基因(MAO3) 的核心部分, 再通过3'和5'RACE扩增上、下游序列以及Genome-Walker的方法得到启动子部分, 共获得3 718 bp长度的序列。将所得结果进行聚类分析, 发现香蕉中ACC氧化酶的氨基酸序列非常保守, 各序列间的同一性高达99% ,与单子叶植物和双子叶植物中ACC氧化酶的氨基酸序列的同源性在66.7%~71.8%之间。组织原位杂交试验表明MAO3基因的表达具有组织特异性, 初步认为是在韧皮部筛管组织中特异表达。运用实时荧光定量PCR技术, 实时监测到了MAO3基因和香蕉乙烯受体基因ERS2受机械伤诱导的定量变化。

关键词: 香蕉, MAO3基因, 克隆, 同源性分析, 组织特异表达, 机械伤诱导

Abstract: We obtained core sequence of MAO3 of banana according to homo-cloning, and then cloned 5'up stream and 3'down stream sequences by RACE PCR technology and the promoter sequence by GenomeWalker technology. Phylogenetic analysis showed that this gene was highly conserved in the same species and had comparatively high homology compared with both monocots and dicots. In situ hybridization experiment showed that the expression of MAO3 gene was tissue specific. Meanwhile, according to fluorescence real-time
quantification PCR, we found that MAO3 and ERS2 (one of banana ethylene receptor genes) genes were also induced by wounding.

Key words: Banana, MAO3 gene, Cloning, Homology analysis, Tissue specific expression analysis, Wounding induce

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