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园艺学报 ›› 2012, Vol. 39 ›› Issue (3): 417-424.

• 果树 • 上一篇    下一篇

平邑甜茶MhHSP70的特征及其对镉和渗透胁迫的反应

沈  伟,杨洪强*,李  强,冉  昆,姜倩倩,孙晓莉,张玮玮,隋  静   

  1. 山东农业大学园艺科学与工程学院,作物生物学国家重点实验室,国家苹果工程技术研究中心,山东泰安271018
  • 收稿日期:2011-12-26 修回日期:2012-03-02 出版日期:2012-03-25 发布日期:2012-03-25
  • 通讯作者: 杨洪强 E-mail:hqyang@sdau.edu.cn;labft@sdau.edu.cn

The Character of MhHSP70 from Malus hupehensis and Its Response to the Stress of Cadmium and Osmosis

SHEN Wei,YANG Hong-qiang*,LI Qiang,RAN Kun,JIANG Qian-qian,SUN Xiao-li,ZHANG Wei-wei,and SUI Jing   

  1. College of Horticulture Science and Engineering,Shandong Agricultural University,State Key Laboratory of Crop Biology,National Research Center for Apple Engineering and Technology,Tai’an,Shandong 271018,China
  • Received:2011-12-26 Revised:2012-03-02 Online:2012-03-25 Published:2012-03-25
  • Contact: YANG Hong-qiang E-mail:hqyang@sdau.edu.cn;labft@sdau.edu.cn

摘要: 以平邑甜茶为试材,通过RT-PCR及RACE技术,获得了一个热激蛋白基因HSP70的全长cDNA序列,命名为MhHSP70,GenBank登录号为HQ876864;该基因全长2 307 bp,序列高度保守,编码650个氨基酸,与苹果、番茄和烟草亲缘关系最近。在根系和叶片中,热激蛋白基因MhHSP70的表达均受镉和渗透胁迫(非热胁迫)诱导,并且随着硫酸镉和氯化钠处理浓度的升高以及聚乙二醇(PEG)处理时间的延长,MhHSP70的表达量逐渐增强。

关键词: 平邑甜茶, MhHSP70, 热激蛋白, 镉, 渗透, 胁迫

Abstract: The cDNA sequence of HSP70 gene,designated as MhHSP70(GenBank number: HQ876864),was isolated from Malus hupehensis(Pamp)Rehd. var. pinyiensis Jiang by reverse transcription polymerase chain reaction(RT-PCR)and rapid-amplification of cDNA ends(RACE). The full length cDNA sequence was 2 307 bp,encoding a protein of 650 amino acids,which have close relationship with HSP70 from Malus pumila Mill.,Solanum lycopersicum and Nicotiana tabacum. The expression of MhHSP70 was induced by cadmium and osmotic stress in roots and leaves,the level of MhHSP70 expression was enhanced with the increase of NaCl and cadmium concentration,as well as PEG treatment time.

Key words: Malus hupehensis(Pamp)Rehd., MhHSP70;heat-shock protein, cadmium, osmosis, stress