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Position: Home > Articles > Cloning and Expression Analysis of LlHSF1 from Lilium longiforum Acta Horticulturae Sinica 2012,41 (11) 2199-2205

百合热激转录因子基因LlHSF1的克隆与表达分析

作  者:
易瑾;罗弦;曹兴;陈莉;辛海波;李晓昕;陈进;义鸣放
单  位:
中国农业大学观赏园艺与园林系
关键词:
百合;铁炮百合;热激转录因子;克隆;表达;荧光定量RT-PCR
摘  要:
以铁炮百合(Lilium longiforum)‘白天堂’的组培苗叶片为试材,通过RACE方法得到了一个热激转录因子(heat shock transcription factor,HSF)基因LlHSF1的cDNA全长序列。该序列全长1068bp,推断其含有一个780bp的开放阅读框(ORF),编码260个氨基酸,推导的蛋白质分子量为30.123kD。对推定的氨基酸序列与其它已知物种HSF进行比对发现,该基因有热激转录因子所具备的典型结构域和调控元件,据此推断,克隆到的基因是一个新的热激转录因子成员,命名为LlHSF1。荧光定量PCR分析结果表明:常温下该基因在百合根、鳞茎、叶中都有表达,但在叶片中表达量较高;实时荧光定量PCR分析结果表明,42℃处理1~12h,叶中该基因表达量增加。
译  名:
Cloning and Expression Analysis of LlHSF1 from Lilium longiforum
作  者:
YI Jin,LUO Xian,CAO Xing,CHEN Li,XIN Hai-bo,LI Xiao-xin,CHEN Jin,and YI Ming-fang (Department of Ornamental Horticulture and Landscape Architecture,China Agricultural University,Beijing 100193,China)
关键词:
Lilium longiforum;heat shock transcription facto(rHSF);cloning;real-time quantitative PCR
摘  要:
A full length cDNA named LlHSF1,belonging to Heat shock transcription factor(HSF),was cloned from Lilium longiforum'White Heaven'by RT-PCR and RACE(rapid amplification of cDNA ends).The gene consisted of 1 068 bp and open reading frame encompassed 780 bp encoding a polypeptide of 260 amino acids with calculated protein molecular mass of 30.123kD.Cluster analysis showed that this gene was highly homologous to known HSF from other organisms.RT-PCR analysis showed that expression of LlHSF1 could be detected in leaf,root and bulb at 22℃,and it was expressed highly in the leaf.The results with SYBR GREEN real-time quantitative PCR showed that the gene expression level increased in leaves during 1-12 hours at 42℃.

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