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园艺学报 ›› 2010, Vol. 37 ›› Issue (3): 435-440.

• 观赏植物 • 上一篇    下一篇

铁炮百合热激转录因子基因克隆与表达分析

辛海波;陈 莉;李晓燕;何秀丽;义鸣放   

  1. 1 中国农业大学观赏园艺与园林系,北京 100193;2 乳山市农业局,山东乳山 264500)
  • 收稿日期:2009-05-24 修回日期:2010-02-08 出版日期:2010-03-25 发布日期:2010-03-25

Cloning and Expression Analysis of hsf from Lilium longiforum

XIN Hai-bo;CHEN Li;LI Xiao-yan;HE Xiu-li;YI Ming-fang
  

  1. 1Department of Ornamental Horticulture and Landscape Architecture,China Agricultural University,Beijing 100193,China;2 Agriculture Bureau of Rushan,Rushan,Shandong 264500,China)
  • Received:2009-05-24 Revised:2010-02-08 Online:2010-03-25 Published:2010-03-25

摘要: 以铁炮百合(Lilium longiforum)‘白天堂’为试材,通过RACE 方法得到了一个热激转录因
子(Heat shock transcription factor,HSF)A 家族基因全长序列。该基因包含一个编码350 个氨基酸的开放阅读框。对推定的氨基酸序列进行聚类分析,与已知的HSFA2 同源性较高,据此推断,克隆到的基因是一个新的HSFA2 成员。经过与功能明确的番茄和拟南芥HSFA2 序列比对分析,该基因有热激转录因子所具备的典型结构域和调控元件。RT-PCR 分析该基因时空表达模式的结果表明:37 ℃条件下处理1 h,根、鳞茎、叶中能检测到其表达,叶片37 ℃处理0.5 ~ 12 h 均可检测到表达。

关键词: 百合, 热激转录因子, 热激, 耐热性

Abstract:

A all-length heat shock transcription factor(HSF) gene with 350aa ORF, belonging to HSFA, was cloned from Lilium longiforum ‘white heaven’ by RACE(Rapid Amplification of cDNA Ends). Cluster analysis showed that this gene was highly homologous to known HSFA2 from other organisms and one novel member of HSFA2. Furthermore, alignment with HSFA2 from tomato and Arabidopsis indicated there was highly conserved DNA binding domain in this gene, harboring other characterized domains and regulatory elements. RT-PCR showed that expression of this gene could be detected in roots and bulbs
treated by 37 ℃ for 1 hour and be detected in leaves during 0.5–12 hours at 37 ℃.

Key words: Lilium longiforum, heat shock transcription factor(HSF), heat shock, thermotolerance

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