河南农业科学 ›› 2019, Vol. 48 ›› Issue (10): 127-132.DOI: 10.15933/j.cnki.1004-3268.2019.10.019

• 园艺 • 上一篇    下一篇

不同耐热三色堇材料HSP70基因克隆及热胁迫下的表达分析

牛杨莉,朱小佩,杨亚萍,葛晓敏,杜晓华,刘会超   

  1. (河南科技学院 园艺园林学院,河南新乡 453003)
  • 收稿日期:2019-05-10 出版日期:2019-10-15 发布日期:2019-10-15
  • 通讯作者: 刘会超(1964-),男,河南南召人,教授,博士,主要从事观赏植物抗性生理及种质资源研究。E-mail:huichaoliu2012@163.com
  • 作者简介:牛杨莉(1994-),女,河南鹤壁人,在读硕士研究生,研究方向:观赏植物生物技术与遗传育种。E-mail:1399254566@qq.com
  • 基金资助:
    河南省高等学校重点科研项目(19A210011);河南省科技攻关-国际合作项目(182102410029);河南科技学院省部级成果培育计划小项目(2017CG02)

Cloning and Expression Analysis of HSP70 Gene in Different Heat-Resistant Pansy(Viola tricolor) Materials under Heat Stress

NIU Yangli,ZHU Xiaopei,YANG Yaping,GE Xiaomin,DU Xiaohua,LIU Huichao   

  1.  ( School of Horticulture and Landscape Architecture,Henan Institute of Science and Technology,Xinxiang 453003,China)
  • Received:2019-05-10 Published:2019-10-15 Online:2019-10-15

摘要: 以三色堇耐热材料DFM-16和热敏材料08H为试材,采用PCR技术扩增到VtHSP70基因的cDNA和gDNA序列,通过real-time PCR技术分析了该基因在热胁迫下的表达。结果表明,2种材料中的VtHSP70 cDNA序列长度和开放阅读框长度相同,编码649个氨基酸,氨基酸序列相似性为98.61%。2个材料中的VtHSP70 gDNA结构相似,均包含1个内含子。同源比对和系统进化树表明,VtHSP70基因与拟南芥和水稻中胞质HSP70基因同源性较高。42 ℃热激处理0、1、2、6、12 h后,2种材料中VtHSP70基因表达量都明显上升,但耐热材料DFM-16的升高幅度显著高于热敏材料08H。

关键词: 三色堇, HSP70, 基因克隆, 基因表达, 热胁迫

Abstract:  In this study,the cDNA and gDNA sequences of the VtHSP70 gene were amplified from the heat-resistant pansy(DFM-16) and heat-sensitive material(08H) by PCR,and the expression level of the VtHSP70 gene under heat stress was analyzed by real-time PCR technique.The results showed that the length of VtHSP70 cDNA sequence and the length of open reading frame were the same in the two materi als,encoding 649 amino acids and the similarity reached 98.61%.The VtHSP70 gDNA structure of the two materials was similar and contained an intron.Homology comparison and phylogenetic tree showed that VtHSP70 gene had the highest homology with cytoplasmic HSP70 gene in Arabidopsis thaliana and rice.Real-time PCR results showed that the expression of VtHSP70 gene increased significantly in the two materials after heat shock treatment at 42℃ for 0,1,2,6,12 hours,but the increase rate in the heat-re sistant material DFM-16 was significantly higher than that in the heat-sensitive material 08H.

Key words: Viola tricolor, HSP70, Gene cloning, Gene expression, Heat stress

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