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园艺学报 ›› 2013, Vol. 40 ›› Issue (7): 1359-1368.

• 研究报告 • 上一篇    下一篇

琯溪蜜柚及其早熟红肉突变体成熟果实SSH 文库的构建及初步分析

刘顺枝,黄 忠,胡位荣,江月玲,王小兰*   

  1. 广州大学生命科学学院,广州 510006
  • 收稿日期:2013-01-10 出版日期:2013-07-25 发布日期:2013-07-25
  • 基金资助:

    国家自然科学基金项目(30871761);广东省科技计划项目(2010B020305014);国家级大学生创新训练项目(201211078020)

Construction and Analysis of Suppression Subtractive Hybridization Library of Red-fleshed Sweet Pomelo

LIU Shun-zhi,HUANG Zhong,HU Wei-rong,JIANG Yue-ling,and WANG Xiao-lan*   

  1. School of Life Sciences,Guangzhou University,Guangzhou 510006,China
  • Received:2013-01-10 Online:2013-07-25 Published:2013-07-25

摘要: 分别以琯溪蜜柚及其突变体红肉蜜柚(成熟期早20 ~ 25 d)的成熟果肉cDNA 作驱赶子和检测子,利用结合分子镜像选择技术的SSH 技术,构建了红肉蜜柚和琯溪蜜柚的正向差减cDNA 文库。通过PCR 检测cDNA 克隆外源插入片段,其大小介于100 ~ 1 000 bp。通过点杂交差异筛选文库,得到102 个表达增强2 倍或以上的克隆并测序,结果表明这102 个克隆代表44 个Unigenes,通过序列同源性比对分析,发现获得的Unigenes 在功能上主要涉及信号传导、蛋白质合成、应激反应、转运等代谢反应。

关键词: 琯溪蜜柚, 突变体, 抑制差减杂交, 差异表达基因

Abstract: A forward subtractive cDNA library was constructed through suppression subtractive hybridization(SSH) method with mirror orientation selection,which was performed using the cDNA from wild type‘Guanxi’pomelo(Citrus grandis)as driver,those from its red-flesh mutant as tester. PCR analysis showed that most of the clones with insertions ranged from 100 bp to 1 000 bp. After differential screening through dot hybridization,a total of 102 transcripts represented 44 Unigenes with signal ratios stronger than two times were selected for 2 additional screenings. Homology analysis showed that they
were found to be involved in diverse biological processes,such as signal transduction,protein synthesis,stress response as well as transport metabolism.

Key words: words:Citrus grandis(L.)Osbeck, mutant strain, suppression subtractive hybridization(SSH), differentially expressed sequence

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