Differential Expression of P450 Genes and nAChR Subunits Associated With Imidacloprid Resistance in Laodelphax striatellus (Hemiptera: Delphacidae)

Imidacloprid is a key insecticide used for controlling sucking insect pests, including the small brown planthopper (Laodelphax striatellus, Fallén) (Hemiptera: Delphacidae), an important agricultural pest of rice. A strain of L. striatellus (YN-ILR) developed 21-fold resistance when selected with im...

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Veröffentlicht in:Journal of economic entomology 2018-05, Vol.111 (3), p.1382-1387
Hauptverfasser: Zhang, Yueliang, Liu, Baosheng, Zhang, Zhichun, Wang, Lihua, Guo, Huifang, Li, Zhong, He, Peng, Liu, Zewen, Fang, Jichao
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container_title Journal of economic entomology
container_volume 111
creator Zhang, Yueliang
Liu, Baosheng
Zhang, Zhichun
Wang, Lihua
Guo, Huifang
Li, Zhong
He, Peng
Liu, Zewen
Fang, Jichao
description Imidacloprid is a key insecticide used for controlling sucking insect pests, including the small brown planthopper (Laodelphax striatellus, Fallén) (Hemiptera: Delphacidae), an important agricultural pest of rice. A strain of L. striatellus (YN-ILR) developed 21-fold resistance when selected with imidacloprid on a susceptible YN strain. An in vitro study on piperonyl butoxide synergism indicated that enhanced detoxification mediated by cytochrome P450s contributed to imidacloprid resistance to some extent, and multiple P450 genes showed altered expression in the imidacloprid-resistantYN-ILR strain compared with the susceptibleYN strain (CYP425B1-CYP6BD10 had 1.51- to 11.45-fold higher expression, CYP4CE2-CYP4DD1V2 had 0.12- to 0.57-fold lower expression). While there were no mutations in target nicotinic acetylcholine receptor (nAChR) genes, subunits of Lsα1, Lsβ1, and Lsβ3 in the YN-ILR strain showed 3.86-, 4.39-, and 2.59-fold higher expression and Lsa8 displayed 0.38-fold lower expression than the YN strain. Moreover, 21-fold moderate imidacloprid resistance in individuals of L. striatellus did not produce a fitness cost. The findings suggest that L. striatellus has the capacity to develop resistance to imidacloprid through P450 detoxification and potential target nAChR expression changes, and moderate imidacloprid resistance was not associated with a fitness cost.
doi_str_mv 10.1093/jee/toy051
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A strain of L. striatellus (YN-ILR) developed 21-fold resistance when selected with imidacloprid on a susceptible YN strain. An in vitro study on piperonyl butoxide synergism indicated that enhanced detoxification mediated by cytochrome P450s contributed to imidacloprid resistance to some extent, and multiple P450 genes showed altered expression in the imidacloprid-resistantYN-ILR strain compared with the susceptibleYN strain (CYP425B1-CYP6BD10 had 1.51- to 11.45-fold higher expression, CYP4CE2-CYP4DD1V2 had 0.12- to 0.57-fold lower expression). While there were no mutations in target nicotinic acetylcholine receptor (nAChR) genes, subunits of Lsα1, Lsβ1, and Lsβ3 in the YN-ILR strain showed 3.86-, 4.39-, and 2.59-fold higher expression and Lsa8 displayed 0.38-fold lower expression than the YN strain. Moreover, 21-fold moderate imidacloprid resistance in individuals of L. striatellus did not produce a fitness cost. The findings suggest that L. striatellus has the capacity to develop resistance to imidacloprid through P450 detoxification and potential target nAChR expression changes, and moderate imidacloprid resistance was not associated with a fitness cost.</description><identifier>ISSN: 0022-0493</identifier><identifier>EISSN: 1938-291X</identifier><identifier>DOI: 10.1093/jee/toy051</identifier><identifier>PMID: 29617902</identifier><language>eng</language><publisher>US: Entomological Society of America</publisher><subject>Acetylcholine receptors (nicotinic) ; Animals ; Binding sites ; Bioassays ; Bioengineering ; Costs ; Cytochrome ; Cytochrome P-450 Enzyme System - genetics ; Cytochrome P-450 Enzyme System - metabolism ; cytochrome P450s ; Delphacidae ; Detoxification ; Female ; fitness cost ; Gene Expression - drug effects ; Gene Expression - genetics ; Genes ; Genetic aspects ; Hemiptera ; Hemiptera - drug effects ; Hemiptera - genetics ; Hemiptera - growth &amp; development ; Imidacloprid ; Insect pests ; Insect Proteins - genetics ; Insect Proteins - metabolism ; Insecticide resistance ; Insecticide Resistance - genetics ; INSECTICIDE RESISTANCE AND RESISTANCE MANAGEMENT ; Insecticides ; Insecticides - pharmacology ; Insects ; Laboratories ; Laodelphax striatellus ; Male ; Neonicotinoids - pharmacology ; nicotinic acetylcholine receptor ; Nitro Compounds - pharmacology ; Nymph - drug effects ; Nymph - genetics ; Nymph - growth &amp; development ; Pesticides ; Pests ; Piperonyl butoxide ; Receptors, Nicotinic - genetics ; Receptors, Nicotinic - metabolism ; Reproductive fitness ; Rice ; Synergism</subject><ispartof>Journal of economic entomology, 2018-05, Vol.111 (3), p.1382-1387</ispartof><rights>The Author(s) 2018. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com. journals.permissions@oup.com</rights><rights>The Author(s) 2018. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com. 2018</rights><rights>COPYRIGHT 2018 Oxford University Press</rights><rights>The Author(s) 2018. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. 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A strain of L. striatellus (YN-ILR) developed 21-fold resistance when selected with imidacloprid on a susceptible YN strain. An in vitro study on piperonyl butoxide synergism indicated that enhanced detoxification mediated by cytochrome P450s contributed to imidacloprid resistance to some extent, and multiple P450 genes showed altered expression in the imidacloprid-resistantYN-ILR strain compared with the susceptibleYN strain (CYP425B1-CYP6BD10 had 1.51- to 11.45-fold higher expression, CYP4CE2-CYP4DD1V2 had 0.12- to 0.57-fold lower expression). While there were no mutations in target nicotinic acetylcholine receptor (nAChR) genes, subunits of Lsα1, Lsβ1, and Lsβ3 in the YN-ILR strain showed 3.86-, 4.39-, and 2.59-fold higher expression and Lsa8 displayed 0.38-fold lower expression than the YN strain. Moreover, 21-fold moderate imidacloprid resistance in individuals of L. striatellus did not produce a fitness cost. The findings suggest that L. striatellus has the capacity to develop resistance to imidacloprid through P450 detoxification and potential target nAChR expression changes, and moderate imidacloprid resistance was not associated with a fitness cost.</abstract><cop>US</cop><pub>Entomological Society of America</pub><pmid>29617902</pmid><doi>10.1093/jee/toy051</doi><tpages>6</tpages></addata></record>
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subjects Acetylcholine receptors (nicotinic)
Animals
Binding sites
Bioassays
Bioengineering
Costs
Cytochrome
Cytochrome P-450 Enzyme System - genetics
Cytochrome P-450 Enzyme System - metabolism
cytochrome P450s
Delphacidae
Detoxification
Female
fitness cost
Gene Expression - drug effects
Gene Expression - genetics
Genes
Genetic aspects
Hemiptera
Hemiptera - drug effects
Hemiptera - genetics
Hemiptera - growth & development
Imidacloprid
Insect pests
Insect Proteins - genetics
Insect Proteins - metabolism
Insecticide resistance
Insecticide Resistance - genetics
INSECTICIDE RESISTANCE AND RESISTANCE MANAGEMENT
Insecticides
Insecticides - pharmacology
Insects
Laboratories
Laodelphax striatellus
Male
Neonicotinoids - pharmacology
nicotinic acetylcholine receptor
Nitro Compounds - pharmacology
Nymph - drug effects
Nymph - genetics
Nymph - growth & development
Pesticides
Pests
Piperonyl butoxide
Receptors, Nicotinic - genetics
Receptors, Nicotinic - metabolism
Reproductive fitness
Rice
Synergism
title Differential Expression of P450 Genes and nAChR Subunits Associated With Imidacloprid Resistance in Laodelphax striatellus (Hemiptera: Delphacidae)
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