Species-specific COI primers for rapid identification of a globally significant invasive pest, the cassava mealybug Phenacoccus manihoti Matile-Ferrero

doi:10.1016/S2095-3119(18)62043-X

Journal of Integrative Agriculture ›› 2019, Vol. 18 ›› Issue (5): 1042-1049.DOI: 10.1016/S2095-3119(18)62043-X

所属专题：昆虫和植物互作合辑Insect and Plant Interact

收稿日期:2018-05-06 出版日期:2019-05-01 发布日期:2019-04-29

Species-specific COI primers for rapid identification of a globally significant invasive pest, the cassava mealybug Phenacoccus manihoti Matile-Ferrero

WANG Yu-sheng¹, TIAN Hu², WAN Fang-hao¹, ZHANG Gui-fen¹

¹ State Key Laboratory for Biology of Plant Diseases and Insect Pests/Key Laboratory of Integrated Pest Management of Crop, Ministry of Agriculture/Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R.China
² Caofeidian Sub-Center of Hebei Entry-Exit Inspection and Quarantine Technical Center, Tangshan 063200, P.R.China

Received:2018-05-06 Online:2019-05-01 Published:2019-04-29
Contact: Correspondence ZHANG Gui-fen, Tel: +86-10-82109572, Fax: +86-10-82105927, E-mail: guifenzhang3@163.com
About author:WANG Yu-sheng, E-mail: yushengwang01@163.com;
Supported by:
This work was supported by the National Key R&D Program of China (2017YFC1200600, 2016YFC1201200 and 2015BAD08A16) and the Science and Technology Innovation Program of CAAS (caascx-2013-2018-IAS).

摘要/Abstract

Abstract:

The globally invasive cassava mealybug Phenacoccus manihoti Matile-Ferrero is a pernicious pest of cassava, and its recent introduction into Asia has raised considerable alarm. To slow or prevent further invasion, an accurate, simple, and developmental-stage-independent detection method for P. manihoti is required. In the present study, a PCR method based on a species-specific mitochondrial DNA cytochrome oxidase I (SS-COI) marker was developed for rapid identification of P. manihoti. One pair of SS-COI primers (PMSSZW-1F and PMSSZW-1R) was designed based on sequence variations in the COI gene among P. manihoti and related mealybug species. Specificity of the primer pair was validated on 21 closely related species. Sensitivity tests were performed on four immature developmental stages and female adults. Efficacy tests demonstrated that at the relatively low concentration of (135.2±14.7) pg μL^–1 resuspended DNA, the specific fragment was detected in all replicates. Furthermore, the SS-COI primer pair was assayed on three populations of P. manihoti from major exporting countries of cassava. The PCR assay was proved to be a rapid, simple, and reliable molecular measure for the identification of P. manihoti. This tool will be useful for quarantine, monitoring, and management of this invasive pest.

Key words: Phenacoccus manihoti , cassava mealybug , invasive pest , molecular identification , species-specific COI primers

. [J]. Journal of Integrative Agriculture, 2019, 18(5): 1042-1049.

WANG Yu-sheng, TIAN Hu, WAN Fang-hao, ZHANG Gui-fen. Species-specific COI primers for rapid identification of a globally significant invasive pest, the cassava mealybug Phenacoccus manihoti Matile-Ferrero[J]. Journal of Integrative Agriculture, 2019, 18(5): 1042-1049.

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Species-specific COI primers for rapid identification of a globally significant invasive pest, the cassava mealybug Phenacoccus manihoti Matile-Ferrero

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