华北农学报 ›› 2013, Vol. 28 ›› Issue (3): 30-34. doi: 10.3969/j.issn.1000-7091.2013.03.006

所属专题: 生物技术

• 论文 • 上一篇    下一篇

野生茄托鲁巴姆LEA蛋白基因的克隆与序列分析

叶雪凌, 周宝利   

  1. 沈阳农业大学园艺学院, 辽宁沈阳 110866
  • 收稿日期:2013-03-15 出版日期:2013-06-28
  • 通讯作者: 周宝利(1956-),男,辽宁绥中人,教授,博士生导师,主要从事蔬菜抗病生理与生态研究
  • 作者简介:叶雪凌(1987-),女,辽宁沈阳人,讲师,主要从事蔬菜抗病(逆)生理与分子生物学研究
  • 基金资助:
    高等学校博士点专项科研基金项目(20102103120005);辽宁省博士启动基金项目(20101104);辽宁省教育厅项目(L2010494);中国博士后基金项目(20100471472)

Cloning and Sequence Analysis of a Late Embryogenesis Abundant Protein Gene in Solanum torvum

Ye Xueling, Zhou Baoli   

  1. College of Horticulture,Shenyang Agriculture University, Shenyang 110866,China
  • Received:2013-03-15 Published:2013-06-28

摘要: 野生茄托鲁巴姆高抗黄萎病,是研究茄子黄萎病抗性的理想试材。胚胎发育晚期丰富蛋白(LEA蛋白)是植物在逆境条件下生成的一类应激蛋白。研究以1个受黄萎病菌诱导的托鲁巴姆EST为种子序列,结合电子克隆及RT-PCR验证的策略,获得了LEA蛋白基因的全长cDNA序列,命名为StLEA1。该基因的完整开放阅读框为291bp,编码96个氨基酸,编码蛋白的分子量为10.748 kDa,等电点为9.913。经序列分析,StLEA1为水溶性蛋白,不存在信号肽,具有LEA5家族的典型结构域和保守序列,预测含有多个磷酸化位点。表达分析表明,托鲁巴姆受黄萎病菌侵染后,StLEA1在根系中上调表达。为探讨野生茄托鲁巴姆抗黄萎病分子机制提供了素材。

关键词: 野生茄托鲁巴姆, 黄萎病, 胚胎发育晚期丰富蛋白

Abstract: Solanum torvum,a wild species of eggplant,is highly resistant to Verticillium wilt.Therefore,it is the ideal material for studying the mechanism of resistance to Verticillium wilt in eggplant. Late embryogenesis abundant proteins ( LEA proteins) are a group of stress-responsive proteins in higher plants that are induced by environmental stress.In this study,a up-regulated EST while infected by Verticillium wilt was used as a querying probe to blast the GenBank database.Based on the assembled homologous cDNA sequences,a 490 bp cDNA was amplified and cloned by RT-PCR,designated StLEA1. The ORF of StLEA1 is 291 bp,coding a protein with 96 animo acids. The molecular weight of coding protein is 10. 748 kDa and isoelectric point is 9.913.StLEA1 protein is a soluble protein with multiple phosphorylation sites,conserve domain in Lea5,but without signal peptides.Quantitative RT-PCR analysis revealed that StLEA1 was up-regulated in roots while Solanum torvum was infected by Verticillium wilt.The result provides the material for studying the resistance mechanism of wild eggplant to Verticillium wilt.

Key words: Solanum torvum, Verticillium wilt, Late embriogenesis abundant protein

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引用本文

叶雪凌, 周宝利. 野生茄托鲁巴姆LEA蛋白基因的克隆与序列分析[J]. 华北农学报, 2013, 28(3): 30-34. doi: 10.3969/j.issn.1000-7091.2013.03.006.

Ye Xueling, Zhou Baoli. Cloning and Sequence Analysis of a Late Embryogenesis Abundant Protein Gene in Solanum torvum[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2013, 28(3): 30-34. doi: 10.3969/j.issn.1000-7091.2013.03.006.

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