![]() Uses over 400 plant species and has evolved different insecticides resistance mechanisms. Kentucky, United States of AmericaĠ Instituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chileīackground: Among herbivorous insects that have exploited agro-ecosystems, the peach-potato aphid, Myzus persicae, is recognized as one of the most important agricultural pests worldwide. Insecticide Resistance Mechanisms in the Green Peach Aphid Myzus persicae (Hemiptera: Aphididae) II: Costs and Benefits ![]() Hence, our results suggest that the trade-off among resistance mechanisms might be quite complex, with a multiplicity of costs and benefits depending on the environment.įigueroa CC (2012) Insecticide Resistance Mechanisms in the Green Peach Aphid Myzus persicae (Hemiptera:Īphididae) II: Costs and Benefits. Susceptible genotypes should be able to tolerate the defended host by up-regulating some metabolic genes that are also responding to insecticides. Genotypes carrying IRM exhibited a higher rm than susceptible genotypes on radish, the more unfavorable host. Conclusions/Significance Although we have studied only nine genotypes, overall our results are in agreement with the general idea that allelochemical detoxification systems could constitute a pre-adaptation for the development of insecticide resistance. Genotypes with one IRM kept a similar rm on both hosts, but they increased the transcriptional levels of two genes. The rm relationship was reversed on the unfavorable host genotypes with multiple IRM exhibited higher rm, without altering the transcriptional levels of the studied genes. Susceptible genotypes (not carrying insensitivity mutations) had a higher rm on pepper, and the transcriptional levels of five genes increased on radish. Our results show a significant interaction between host and IRM on the intrinsic rate of increase (rm). persicae can give an advantage in terms of reproductive fitness when aphids face two hosts, pepper (Capsicum annuum) a suitable host and radish (Raphanus sativus) the unfavorable host and (ii) examined the transcriptional expression of six genes that are known to be up-regulated in response to insecticides. Methodology/Principal Findings In this work we (i) evaluated whether insecticide resistance mutations (IRM) in M. persicae feeds upon a huge diversity of hosts, it has been exposed to a wide variety of plant allelochemicals, which probably have promoted a wide range of detoxification systems. Determination of the insecticide resistance mechanisms by biochemical assays in Myzus persicae (Sulz.) (Hemiptera:Aphididae) populations collected from Icel-TurkeyĮstablishing the resistance of Myzus persicae (Sulzer) by molecular methods Establishing the resistance of Myzus persicae (Sulzer) by molecular methodsīackground Among herbivorous insects that have exploited agro-ecosystems, the peach-potato aphid, Myzus persicae, is recognized as one of the most important agricultural pests worldwide. İçel’den toplanan Myzus persicae (Sulz.) (Hemiptera: Aphididae) popülasyonlarında insektisitlere direnç mekanizmalarının biyokimyasal yöntemlerle belirlenmesiĭetermination of the insecticide resistance mechanisms by biochemical assays. İçel’den toplanan Myzus persicae (Sulz.) (Hemiptera: Aphididae) popülasyonlar. Analogous pleiotropic effects of insecticide resistance genotypes in peach–potato aphids and houseflies Amplification of a Cytochrome P450 Gene Is Associated with Resistance to Neonicotinoid Insecticides in the Aphid Myzus persicaeĪnalogous pleiotropic effects of insecticide resistance genotypes in peach. Insecticide Resistance Mechanisms in the Green Peach Aphid Myzus persicae (Hemiptera: Aphididae) I: A Transcriptomic SurveyĪmplification of a Cytochrome P450 Gene Is Associated with Resistance to. Insecticide Resistance Mechanisms in the Green Peach Aphid Myzus persicae.
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