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Position: Home > Articles > Clone and Sequence Analysis of cDNA Fragment of Cytochrome P 450 from Oriental Tobacco Budworm (Helicoverpa assulta Güenée) Journal of Henan Agricultural University 2007,41 (3) 42-46

烟实夜蛾细胞色素P 450 cDNA片段的克隆与序列分析

作  者:
李卫华;杨文玲;苗雪霞;付贵成;郭线茹
单  位:
中国科学院植物生理生态研究所;河南农业大学植物保护学院
关键词:
烟实夜蛾;细胞色素P450;基因克隆;序列分析
摘  要:
昆虫细胞色素P 450与昆虫抗药性关系密切,本研究以烟实夜蛾5龄幼虫中肠的总RNA为模板,设计并合成简并引物,利用反转录-多聚酶链式反应(RT-PCR)扩增出了烟实夜蛾细胞色素P 450基因的cDNA片段,将其克隆到pMD 18-T载体进行序列测定,测序得到的491 bp的片断编码163个氨基酸残基,且该片断在阅读框内.与已公布的谷实夜蛾、棉铃虫和烟芽夜蛾细胞色素P 450氨基酸序列进行比较,其一致性分别为98.7%,98.7%和92.1%.
译  名:
Clone and Sequence Analysis of cDNA Fragment of Cytochrome P 450 from Oriental Tobacco Budworm (Helicoverpa assulta Güenée)
作  者:
LI Wei-hua1,YANG Wen-ling1,MIAO Xue-xia2,FU Gui-cheng1, GUO Xian-ru1(1.Plant Protection College of Henan Agricultural University,Zhengzhou 450002,China;2.Shanghai Institute of Plant Physiology & Ecology,Chinese Academy of Sciences,Shanghai 200032,China)
关键词:
Helicoverpa assulta Güenée;cytochrome P 450;gene cloning;sequence analysis
摘  要:
Cytochrome P 450 is closely related with the insecticide resistance of insect.cDNA fragment of cytochrome P 450 gene in the fifth instar larva of oriental tobacco budworm was amplified by RT-PCR with total RNA as template and using a degenerate primer.The target fragment was further sequenced after being cloned into pMD 18-T vector plasmid.The sequenced result showed that 491 bp nucleotide sequence that encodes 163 amino acid residues was in the encoding frame.Compared with the known cytochrome P 450 nucleotide sequence of Helicoverpa zea,Helicoverpa armigera,and Heliothis virescens,the identity were 98.7%,98.7% and 92.1%,respectively.

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