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基于种特异引物(SS-COI)快速鉴定锈红果实蝇

2021-11-26黄振郭琼霞侯有明

安徽农业科学 2021年21期

黄振 郭琼霞 侯有明

摘要 [目的]开展不受虫态限制的实蝇快速鉴定技术研究。[方法]基于mtDNA COⅠ基因序列,筛选设计了一对能够准确鉴定锈红果实蝇的种特异性引物XF29和XR29 选用锈红果实蝇作为阳性对照,颜带实蝇B.cilifer (Hendel)、瘤胫实蝇B.tuberculata (Bezzi)等19种实蝇作为阴性对照,进行PCR扩增和电泳检测。[结果]仅阳性种锈红果实蝇在约265 bp的位置扩增出一条清晰且单一的条带,其余实蝇均未出现任何条带。[结论]采用SS-PCR技术,基于mtDNA COⅠ基因序列筛选设计的特异引物种特异性和稳定性强,可为进出境果蔬检疫、疫情早期预警和有效监测防治提供快速鉴定的依据。

关键词 锈红果实蝇;SS-PCR技术; COⅠ基因;种特异性引物;分子鉴定

中图分类号 S 433  文献标识码 A

文章编号 0517-6611(2021)21-0164-03

doi:10.3969/j.issn.0517-6611.2021.21.040

开放科学(资源服务)标识码(OSID):

Rapid Identification of Bactrocera rubigina by Species-specific Primers (SS-COI)

HUANG Zhen  GUO Qiong-xia3,HOU  You-ming1

(1.College of Plant Protection,Fujian Agriculture and Forestry University,Fuzhou,Fujian  350002;2.Fuzhou Changle Airport Customs,Fuzhou,Fujian 350209;3.Fuzhou Customs Technology Center,Fuzhou,Fujian  350001)

Abstract

[Objective]To study the rapid identification technology of  Bactrocera rubigina.[Method]Based on mtDNA COⅠ gene sequence, a pair of species-specific primers XF29 and XR293 were screened and designed, which could accurately identify Bactrocera rubigina.Bactrocera rubigina was selected as positive control, and 19 fruit flies such as B. cilifer and B. tuberculata were selected as negative control for PCR amplification and electrophoresis detection.[Result]Only the positive fruit fly rust red fruit fly amplified a clear and single band at about 265 bp, and none of the other fruit flies showed any band.[Conclusion]Using SS-PCR technology, the specific primers designed based on mtDNA COⅠ gene sequence screening have strong species specificity and stability, which can provide rapid identification basis for entry and exit fruit and vegetable quarantine, early warning of epidemic situation and effective monitoring and control.

Key words Bactrocera rubigina;SS-PCR;COI;Species specific primers;Molecular identification

基金項目 福建省自然科学基金项目 (2011J01066,2012JO1061)。

作者简介 黄振(1985—),男,福建莆田人,农艺师,博士,从事农业昆虫与害虫防治研究。*通信作者:郭琼霞,研究员,从事杂草分类和植物检疫研究;侯有明,研究员,博士,从事昆虫生态研究。

收稿日期 2021-03-14

锈红果实蝇(Bactrocera rubigina (Wang & Zhao))是一种重要的检疫性害虫,属双翅目(Diptera)实蝇科(Tephritidae)果实蝇属(Bactrocera)。我国于1999年在深圳罗湖口岸首次被截获[1],目前主要分布在老挝[2]、不丹[3]、越南[4]、孟加拉[5]以及中国的海南[6-7]、广东[6]、广西[6,8]、云南[9]等地。锈红果实蝇是具有重要经济意义的果蔬害虫,寄主多,危害大,主要危害辣椒、轮叶木姜子[10]等果蔬。其幼虫在果内取食危害,且随寄主果实或包装物等进行远距离传播,而传统单靠成虫鉴定实蝇的方法,难以适应现有口岸高通量、快进快出的检疫鉴定需求,故此开展不受虫态限制的实蝇快速鉴定技术研究,对适应和提升口岸对实蝇的快速鉴定具有现实的重要意义,也是快速通关、早期预警和防止传入传播的基本要求和重要手段。……

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