华北农学报 ›› 2007, Vol. 22 ›› Issue (4): 37-41. doi: 10.7668/hbnxb.2007.04.009

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沙冬青cDNA文库的构建和EST分析

郭九峰1, 孙国琴1, 沈传进2, 乔惠蕾1, 贾利敏1, 郭志杰3   

  1. 1. 内蒙古农牧业科学院生物技术中心, 内蒙古 呼和浩特 010031;
    2. 内蒙古乌海市农业科学研究所, 内蒙古 乌海 016012;
    3. 内蒙古通辽市植保植检站, 内蒙古 通辽 028000
  • 收稿日期:2007-03-21 出版日期:2007-08-28
  • 作者简介:郭九峰(1964-),男,内蒙古赤峰人,研究员,博士,主要从事植物抗逆基因工程研究工作。
  • 基金资助:
    内蒙古自治区科技厅科技计划项目(2004-08-03)

Construction of Ammopiptanthus mongolicus cDNA Library and the Primary Analysis of Expressed Sequence Tags (EST)

GUO Jiu-feng1, SUN Guo-qin1, SHEN Chuan-jin2, QIAO Hui-lei1   

  1. 1. Biotechnology Centre, Inner Mongolia Academy of Agriculture and Husbundary Sciences, Huhhot 010031, China;
    2. Wuhai Institute of Agricultural Sciences, Wuhai, 016012, China;
    3. Tongliao Plant Protection and Quarantine Station, Tongliao 028000, China
  • Received:2007-03-21 Published:2007-08-28

摘要: 为研究沙冬青抗逆的分子机理,分离克隆其抗逆基因,以pBluescript Ⅱ SK为载体构建了沙冬青(Ammopiptanthus mongolicus)越冬叶片cDNA文库,并对文库的部分克隆进行了端随机测序,结果表明,该文库容量为2.16×105cfu,重组率为89.6%;插入片段的平均长度大于1 kb。随机测序得到42个EST,拼接成360个uniEST,经网上BlastN及BlastX分析,其中313个是已知功能的基因的标签,包括能量代谢、物质转化、细胞生长等生物过程,其中与抗逆相关的48条。

关键词: 沙冬青, cDNA文库, 表达序列标签

Abstract: In order to analyse molecular mechanism of abiotic stress and clone its resistance gene, a cDNA library of Ammopiptanthus mongolicus winter leaf was constructed with pBluescript II SK (+) vector. The library consisted of 2.16×105 cfu with the recombinant percentage of 89.6%. Average length of inserted fragment was over 1 kb. Total 542ESTs were obtained with randomly sequenced then 360 uniESTs were obtained by contiganalsis. The analysis of the 360 uniESTs through BlastN and BlastX searching on line showed that 313 uniESTs were determined to be the tags of genes with putative function, these genes were found to be involved in the biological processes including energy metabolism, material transform ation and cell growth. Among these uniESTs, 48uniESTs were determined to be the tags of genes related to stress tolerance.

Key words: Ammopiptanthus mongolicus, cDNA library, Expression sequence tags (EST)

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引用本文

郭九峰, 孙国琴, 沈传进, 乔惠蕾, 贾利敏, 郭志杰. 沙冬青cDNA文库的构建和EST分析[J]. 华北农学报, 2007, 22(4): 37-41. doi: 10.7668/hbnxb.2007.04.009.

GUO Jiu-feng, SUN Guo-qin, SHEN Chuan-jin, QIAO Hui-lei. Construction of Ammopiptanthus mongolicus cDNA Library and the Primary Analysis of Expressed Sequence Tags (EST)[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2007, 22(4): 37-41. doi: 10.7668/hbnxb.2007.04.009.

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