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园艺学报 ›› 2011, Vol. 38 ›› Issue (10): 1873-1882.

• 果树 • 上一篇    下一篇

低温胁迫下佛手和枳乙烯应答因子6(ERF6)表达变化的比较分析

曹诣斌,石 瑞,陈文荣,郭卫东*   

  1. (浙江师范大学化学与生命科学学院,浙江金华 321004)
  • 收稿日期:2011-06-24 修回日期:2011-10-08 出版日期:2011-10-25 发布日期:2011-10-25
  • 通讯作者: 郭卫东*

Comparative Analysis of Expression Changes of Ethylene Response Factor 6(ERF6)in Fingered Citron and Trifoliate Orange Under Cold Stress

CAO Yi-bin,SHI Rui,CHEN Wen-rong,and GUO Wei-dong*   

  1. (College of Chemistry and Life Sciences,Zhejiang Normal University,Jinhua,Zhejiang 321004,China)
  • Received:2011-06-24 Revised:2011-10-08 Online:2011-10-25 Published:2011-10-25
  • Contact: GUO Wei-dong*

摘要: 以柑橘属寒敏感植物佛手‘青皮’品种叶片cDNA为模板,通过RT-PCR与RACE扩增,获得一个1 160 bp的乙烯应答因子(ethylene response factor,ERF)基因的cDNA序列,其基因编码区共999 bp,含有一个保守的AP2/EREBP结构域,与拟南芥AtERF6为同源基因,命名为CmsERF6(GenBank登录号为HQ698835)。4 ℃低温处理佛手和枳(柑橘属近缘种耐寒植物)植株,测定其寒胁迫生理指标(电解质渗出率、丙二醛含量)。使用实时荧光定量PCR,对佛手和枳叶中的ERF6表达含量进行测定分析,结果表明:低温对佛手与枳的ERF6表达均具有诱导作用,且表达量的变化趋势存在明显的差异。尤其在枳中,ERF6的表达较对照组上升约4 000倍,且电解质外渗率的变化与ERF6基因表达量变化具有一致性,说明ERF6基因参与低温胁迫应答。

关键词: 佛手, 枳, 低温胁迫, ERF6

Abstract: Using the cDNA from the leaves of fingered citron‘Qingpi’as the template,the full cDNA of ERF(ethylene response factor)gene(1 160 bp)was cloned by reverse transcription polymerse chain reaction(RT-PCR)and rapid-amplification of cDNA ends(RACE). The gene was named CmsERF6,containing an open reading frame(999 bp)and encoding a protein of 333 amino acids. The expression of ERF6 was determined by real-time quantitative PCR in the leaves of fingered citron‘Qingpi’and trifoliate orange. The results showed that ERF6 was expressed in both fingered citron‘Qingpi’and trifoliate orange,but the trend of expression was apparent difference. Especially in the trifoliate orange,the expression of ERF6 was increased by about 4 000 times than the control group. The same trend was found in changes of relative electric conductivity and gene expression of ERF6,which indicated that ERF6 may be involved in cold stress response pathway and may play an important role in cold tolerance.

Key words: fingered citron, trifoliate orange, cold stress, ERF6

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