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园艺学报 ›› 2007, Vol. 34 ›› Issue (1): 205-208.

• 研究简报 • 上一篇    下一篇

甜瓜果实蔗糖磷酸合成酶基因cDNA片段的克隆及表达分析

于喜艳1 ; 樊继德1 ; 何启伟2*   

  1. (1 山东农业大学园艺科学与工程学院, 山东泰安271018; 2 山东省农业科学院蔬菜所, 济南250100)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-02-25 发布日期:2007-02-25

Cloning and Expression Analysis of a Sucrose Phospha te Synthase cDNAFragment in Melon Fruit

YU Xi-yan1 ; FAN Ji-de1 ; HE Qi-wei2*   

  1. ( 1 College of Horticultural Science and Engineering, Shandong Agricultural University, Tai,an, Shandong 271018, China;2 Vegetable Institute, Shandong Academy of Agricultural Science, Ji,nan 250100,China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-02-25 Published:2007-02-25

摘要: 根据在GenBank中登录的番茄、马铃薯等蔗糖磷酸合成酶基因的保守序列设计引物, 采用
RT-PCR方法从甜瓜花后25 d的果实总RNA中扩增出目标cDNA片段, 克隆到pMD18-T载体中。序列分析
表明, 该片段与番茄蔗糖磷酸合成酶氨基酸序列同源性为98.9% , GenBank中登记号为DQ355797。通过
Northern blot检测其在甜瓜果实不同发育时期的表达变化, 结果表明该基因在甜瓜果实花后25 d开始表达,
随着果实的成熟, 表达量升高。

关键词: 甜瓜, 蔗糖磷酸合成酶基因, 克隆, 基因表达

Abstract: PCR p rimerswere designed based on the conserved domain of some sucrose phosphate syn
thase genes in GenBank. The target cDNA fragmentwas amp lified from the total RNA isolated from melon fruit
of 25 days after pollination with RT-PCR and then was cloned into pMD18-T vector. The sequence showed that
the amino acid sequence encoded by this fragment showed a 98.9% similarity to that of the corresponding re
gion of sucrose phosphate synthase gene in tomato. The accession number of this gene in GenBank was
DQ355797. Northern blotwas performed to analyze the exp ression pattern of sucrose phosphate synthase in dif2
ferent development stages of melon fruit. The result showed that sucrose phosphate synthase began to exp ress
in fruit 25 days after pollination and the expression level of this gene increased with melon fruitmature.

Key words: Melon, Sucrose phosphate synthase gene, Cloning, Gene expression