Molecular mechanisms of Tetranychus urticae chemical adaptation in hop fields

Tara G Piraneo; Jon Bull; Mariany A Morales; Laura C Lavine; Douglas B Walsh; Fang Zhu

doi:10.1038/srep17090

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Molecular mechanisms of Tetranychus urticae chemical adaptation in hop fields

Journal article

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Molecular mechanisms of Tetranychus urticae chemical adaptation in hop fields

Tara G Piraneo, Jon Bull, Mariany A Morales, Laura C Lavine, Douglas B Walsh and Fang Zhu

Scientific reports, Vol.5(1), pp.17090-17090

12/01/2015

DOI: https://doi.org/10.1038/srep17090

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https://hdl.handle.net/2376/113411

PMCID: PMC4664861

PMID: 26621458

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https://doi.org/10.1038/srep17090View

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Abstract

Tetranychidae - genetics

Voltage-Gated Sodium Channels - genetics

Drug Resistance - genetics

Animals

Cytochromes b - genetics

Pesticides

Arthropod Proteins - genetics

Mutation, Missense

Amino Acid Substitution

The two-spotted spider mite, Tetranychus urticae Koch is a major pest that feeds on >1,100 plant species. Many perennial crops including hop (Humulus lupulus) are routinely plagued by T. urticae infestations. Hop is a specialty crop in Pacific Northwest states, where 99% of all U.S. hops are produced. To suppress T. urticae, growers often apply various acaricides. Unfortunately T. urticae has been documented to quickly develop resistance to these acaricides which directly cause control failures. Here, we investigated resistance ratios and distribution of multiple resistance-associated mutations in field collected T. urticae samples compared with a susceptible population. Our research revealed that a mutation in the cytochrome b gene (G126S) in 35% tested T. urticae populations and a mutation in the voltage-gated sodium channel gene (F1538I) in 66.7% populations may contribute resistance to bifenazate and bifenthrin, respectively. No mutations were detected in Glutamate-gated chloride channel subunits tested, suggesting target site insensitivity may not be important in our hop T. urticae resistance to abamectin. However, P450-mediated detoxification was observed and is a putative mechanism for abamectin resistance. Molecular mechanisms of T. urticae chemical adaptation in hopyards is imperative new information that will help growers develop effective and sustainable management strategies.

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Title: Molecular mechanisms of Tetranychus urticae chemical adaptation in hop fields
Creators: Tara G Piraneo - Irrigated Agriculture Research and Extension Center, Washington State University, Prosser, WA 99350, USA
Jon Bull - Department of Entomology, Washington State University, Pullman, WA 99164, USA
Mariany A Morales - Department of Entomology, Washington State University, Pullman, WA 99164, USA
Laura C Lavine - Department of Entomology, Washington State University, Pullman, WA 99164, USA
Douglas B Walsh - Irrigated Agriculture Research and Extension Center, Washington State University, Prosser, WA 99350, USA
Fang Zhu - Department of Entomology, Washington State University, Pullman, WA 99164, USA
Publication Details: Scientific reports, Vol.5(1), pp.17090-17090
Academic Unit: WSU Prosser IAREC; Entomology, Department of
Publisher: England
Identifiers: 99900548006401842
Language: English
Resource Type: Journal article