当前位置: 首页 > 文章 > 马铃薯A病毒云南分离物外壳蛋白基因的克隆与序列分析 西南农业学报 2006,19 (6) 1078-1081
Position: Home > Articles > Cloning and sequencing of the coat protein gene of Potato virus A from Yunnan Southwest China Journal of Agricultural Sciences 2006,19 (6) 1078-1081

马铃薯A病毒云南分离物外壳蛋白基因的克隆与序列分析

作  者:
丁铭;方琦;张丽珍;李婷婷;董家红;张仲凯
单  位:
云南省农业科学院生物技术与种质资源研究所
关键词:
马铃薯A病毒;云南分离物;外壳蛋白基因;序列分析
摘  要:
根据马铃薯病毒A(Potato virusA,PVA)外壳蛋白(CP)基因序列设计合成的一对引物,以带病毒植株总RNA为模板,RT-PCR扩增得到长约800 bp的目的片段。将目的片段克隆至pGEM-T Easy载体并进行了序列测定,测得全长为807 bp的PVA CP基因。测序结果与PVA其他分离物CP基因序列比较,其氨基酸同源性最高可达98.5%。根据GenBank中PVA CP氨基酸序列建立了病毒的系统进化树并对PVA不同分离物CP氨基酸序列差异性进行了分析。
译  名:
Cloning and sequencing of the coat protein gene of Potato virus A from Yunnan
作  者:
DING Ming,FANG Qi,ZHANG Li-zhen,LI Ting-ting,DONG Jia-hong,ZHANG Zhong-kai~*(Biotechnology and Genetic Resources Institute,Yunnan Academy of Agricultural Sciences,Yunnan Kunming 650223,China)
关键词:
PVA;Yunnan isolate;coat protein gene;sequence analysis
摘  要:
Using specific primers which were designed based on Potato virus A(PVA) coat protein (CP) gene sequences,a DNA fragment(800bp) was amplified by reverse transcription polymerase chain reaction(RT-PCR) using the total RNA extracted from the potato plant showed mosaic symptom.The fragment was cloned into pGEM-T Easy vector and then sequenced.Sequence comparison showed it had high sequence homology with CP gene of other PVA isolates with 98.7% at nucleic acid level and 98.5 % at amino acid level.Phylogenetic tree based on CP amino acid sequences of PVA was established and the relationship among the isolates was compared.

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