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Molecular diagnostics for detecting pyrethroid and organophosphate resistance mutations in the Q biotype of the whitefly Bemisia tabaci (Hemiptera: Aleyrodidae)

Tsagkarakou, A., Nikou, Dimitra, Roditakis, E., Sharvit, M., Morin, S. and Vontas, John (2009) 'Molecular diagnostics for detecting pyrethroid and organophosphate resistance mutations in the Q biotype of the whitefly Bemisia tabaci (Hemiptera: Aleyrodidae)'. Pesticide Biochemistry and Physiology, Vol 94, Issue 2-3, pp. 49-54.

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Pyrethroid and organophosphate resistance-associated mutations have been recently reported in the whitefly Bemisia tabaci (Gennadius), a major pest of protected and outdoor crops worldwide. Here, we developed simple PCR-agarose gel visualization based assays for reliably monitoring the L9251 and T929V pyrethroid resistance mutations in the B, tabaci para-type voltage gated sodium channel and the iAChE F331W organophosphate resistance mutation in the acetylcholinesterase enzyme ace1. PCR-RFLP assays were developed for detecting the L9251 and the F331W resistance mutations. A highly specific PASA was developed for detecting the T929V mutation. The molecular diagnostic tools were used to monitor the frequency of the resistance mutations in a large number of field caught Q biotype B. tabaci from Crete (Greece), where both organophosphates and pyrethroids are extensively used. The F331W mutation was fixed in all field individuals examined. The pyrethroid resistance mutations were detected in high frequencies: 0.38 and 0.54 for L9251 and T929V, respectively. The simple diagnostics are accurate and robust, to be used alongside classical bioassays to prevent ineffective insecticide applications, and for early identification of the spreading of resistant Q biotype populations into new regions around the globe. (C) 2009 Elsevier Inc. All rights reserved.

Item Type: Article
Additional Information: Tsagkarakou, Anastasia Nikou, Dimitra Roditakis, Emmanouil Sharvit, Michal Morin, Shai (Vontas, John)
Uncontrolled Keywords: Acetylcholinesterase, Bemisia tabaci, Genotyp, kdr, Molecular diagnostics, Resistance management, Aleyrodidae, Hemiptera
Subjects: QX Parasitology > Insects. Other Parasites > QX 503 Hemiptera (e.g., Bedbugs)
QX Parasitology > Insects. Other Parasites > QX 650 Insect vectors
Faculty: Department: Groups (2002 - 2012) > Vector Group
Digital Object Identifer (DOI):
Depositing User: Users 183 not found.
Date Deposited: 20 Apr 2010 09:15
Last Modified: 06 Feb 2018 12:59


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