华北农学报 ›› 2009, Vol. 24 ›› Issue (4): 74-79. doi: 10.7668/hbnxb.2009.04.015

所属专题: 生物技术

• 论文 • 上一篇    下一篇

细极链格孢菌Hog1 MAPK(酵母)同源基因AtHOG1的克隆与功能分析

冯飞1, 纪春艳2, 杨秀芬3, 曾洪梅3, 邱德文3   

  1. 1. 仲恺农业工程学院, 生命科学学院, 广东广州 510225;
    2. 华南农业大学, 资源环境学院, 广东广州 510642;
    3. 中国农业科学院, 植物保护研究所, 蛋白药物工程实验室, 北京 00080
  • 收稿日期:2009-05-08 出版日期:2009-08-28
  • 作者简介:冯飞(1974-),男,宁夏人,讲师,博士,主要从事生物制药研究.
  • 基金资助:
    国家"863"项目资助(2006AA10A210)

Cloning and Functional Characterization of a Saccharomyces cerevisiae Hog1 MAPK Homologous Gene AtHOG1 from the Fungus Alternaria tenuissima

FENG Fei1, JI Chun-yan2, YANG Xiu-fen3, ZENG Hong-mei3, QIU De-wen3   

  1. 1. College of Life Science, Zhongkai Agriculture and Technology University, Guangzhou 510225 China;
    2. College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China;
    3. Laboratories of Protein Pesticides, Department of Microbial Pesticides and Molecular Design, Institute of Plant Protection, Chinese Academy of Agriculture Science, Beijing 100080, China
  • Received:2009-05-08 Published:2009-08-28

摘要: 为阐明高渗透压甘油激酶在链格孢菌中的功能,通过遗传学手段,构建了细极链格孢菌(Alternaria tenuissima)cDNA酵母表达文库,并对其进行筛选而获得细极链格孢菌高渗透压甘油蛋白激酶AtHOG1基因,该基因全长1 539 bp,编码355个氨基酸.AtHog1p含有MAPK保守的激酶激活区域"TGY",与来源于烟曲霉(Aspergillus fumigatus)AfOsm1p(XP-7524)、稻瘟菌(M.grisea)MG01822(XP-3389)及酿酒酵母(S.cerevisiae)ScHog1p(AAB7558)高度同源,相似性分别为94%,90%和80%.在高渗环境下,AtHOG1基因与ScHOG1基因功能相同.链格孢菌中存在HOG通路信号途径,AtHOG1基因可能与链格孢菌的逆境适应性调节密切相关.

关键词: 高渗透压甘油蛋白激酶, 细极链格孢菌, HOG1基因, 逆境胁迫调节

Abstract: An Alternaria tenuissima cDNA expression library was constructed. The MAP kinase HOG1 was isolated from the Alternaria tenuissima cDNA expression library,designated as AtHOG1. It had a size of 1 539 bases in length,en2 coded a protein of 355 amino acids. The AtHog1p contained the conserved TGYactivation loop found in the stress2activat2 ed protein kinase subgroup of MAPKs and its amino acid sequence showed 94 %,90 % and 80 % identities with AfOsm1p (XP2752664)of Aspergillus f umigatus,Mg01822 (XP2363896)of Magnaporthe grisea and ScHog1p (AAB67558)of Sac2 charomyces cerevisiae, respectively. AtHOG1 cDNA sequences could complement the functions of S. cerevisiae ScHOG1 genes in sodium chloride tolerance,suggesting a functional HOGpathway exists in A. tenuissima,AtHOG1 gene was in2 volved in the stress adaptation regulation of A. tenuissima.

Key words: :High osmolarity glycerol MAP kinase, Alternaria tenuissima, HOG1, Stress adaptation

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引用本文

冯飞, 纪春艳, 杨秀芬, 曾洪梅, 邱德文. 细极链格孢菌Hog1 MAPK(酵母)同源基因AtHOG1的克隆与功能分析[J]. 华北农学报, 2009, 24(4): 74-79. doi: 10.7668/hbnxb.2009.04.015.

FENG Fei, JI Chun-yan, YANG Xiu-fen, ZENG Hong-mei, QIU De-wen. Cloning and Functional Characterization of a Saccharomyces cerevisiae Hog1 MAPK Homologous Gene AtHOG1 from the Fungus Alternaria tenuissima[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2009, 24(4): 74-79. doi: 10.7668/hbnxb.2009.04.015.