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Over-expression in cis of the midgut P450 CYP392A16 contributes to abamectin resistance in Tetranychus urticae

Kyriaki Maria Papapostolou, Maria Riga, George-Rafael Samantsidis, Evangelia Skoufa, Vasileia Balabanidou, Thomas Van Leeuwen (UGent) and John Vontas
(2022) INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY. 142.
Author
Organization
Project
  • SuperPests (Innovative tools for rational control of the most difficult-to-manage pests (super pests) and the diseases they transmit)
  • POLYADAPT (Molecular-genetic mechanisms of extreme adaptation in a polyphagous agricultural pest)
Abstract
Cytochrome P450 mediated metabolism is a well-known mechanism of insecticide resistance. However, to what extent qualitative or quantitative changes are responsible for increased metabolism, is not well understood. Increased expression of P450 genes is most often reported, but the underlying regulatory mechanisms remain widely unclear. In this study, we investigate CYP392A16, a P450 from the polyphagous and major agricultural pest Tetranychus urticae. High expression levels of CYP392A16 and in vitro metabolism assays have previously associated this P450 with abamectin resistance. Here, we show that CYP392A16 is primarily localized in the midgut epithelial cells, as indicated by immunofluorescence analysis, a finding also supported by a comparison between feeding and contact toxicity bioassays. Silencing via RNAi of CYP392A16 in a highly resistant T. urticae population reduced insecticide resistance levels from 3400-to 1900-fold, compared to the susceptible reference strain. Marker-assisted backcrossing, using a single nucleotide polymorphism (SNP) found in the CYP392A16 allele from the resistant population, was subsequently performed to create congenic lines bearing this gene in a susceptible genetic background. Toxicity assays indicated that the allele derived from the resistant strain confers 3.6-fold abamectin resistance compared to the lines with susceptible genetic background. CYP392A16 is over expressed at the same levels in these lines, pointing to cis-regulation of gene expression. In support of that, functional analysis of the putative promoter region from the resistant and susceptible parental strains revealed a higher reporter gene expression, confirming the presence of cis-acting regulatory mechanisms.
Keywords
P450, Marker assisted backcrossing, Immunolocalization, Cis-regulation, RNAi, GATED CHLORIDE CHANNEL, INSECTICIDE RESISTANCE, FUNCTIONAL-CHARACTERIZATION, DROSOPHILA-MELANOGASTER, DELTAMETHRIN RESISTANCE, CYTOCHROME-P450 GENE, PLUTELLA-XYLOSTELLA, POINT MUTATION, SPIDER-MITE, OVEREXPRESSION

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Citation

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MLA
Papapostolou, Kyriaki Maria, et al. “Over-Expression in Cis of the Midgut P450 CYP392A16 Contributes to Abamectin Resistance in Tetranychus Urticae.” INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY, vol. 142, 2022, doi:10.1016/j.ibmb.2021.103709.
APA
Papapostolou, K. M., Riga, M., Samantsidis, G.-R., Skoufa, E., Balabanidou, V., Van Leeuwen, T., & Vontas, J. (2022). Over-expression in cis of the midgut P450 CYP392A16 contributes to abamectin resistance in Tetranychus urticae. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY, 142. https://doi.org/10.1016/j.ibmb.2021.103709
Chicago author-date
Papapostolou, Kyriaki Maria, Maria Riga, George-Rafael Samantsidis, Evangelia Skoufa, Vasileia Balabanidou, Thomas Van Leeuwen, and John Vontas. 2022. “Over-Expression in Cis of the Midgut P450 CYP392A16 Contributes to Abamectin Resistance in Tetranychus Urticae.” INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 142. https://doi.org/10.1016/j.ibmb.2021.103709.
Chicago author-date (all authors)
Papapostolou, Kyriaki Maria, Maria Riga, George-Rafael Samantsidis, Evangelia Skoufa, Vasileia Balabanidou, Thomas Van Leeuwen, and John Vontas. 2022. “Over-Expression in Cis of the Midgut P450 CYP392A16 Contributes to Abamectin Resistance in Tetranychus Urticae.” INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 142. doi:10.1016/j.ibmb.2021.103709.
Vancouver
1.
Papapostolou KM, Riga M, Samantsidis G-R, Skoufa E, Balabanidou V, Van Leeuwen T, et al. Over-expression in cis of the midgut P450 CYP392A16 contributes to abamectin resistance in Tetranychus urticae. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY. 2022;142.
IEEE
[1]
K. M. Papapostolou et al., “Over-expression in cis of the midgut P450 CYP392A16 contributes to abamectin resistance in Tetranychus urticae,” INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY, vol. 142, 2022.
@article{8754992,
  abstract     = {{Cytochrome P450 mediated metabolism is a well-known mechanism of insecticide resistance. However, to what extent qualitative or quantitative changes are responsible for increased metabolism, is not well understood. Increased expression of P450 genes is most often reported, but the underlying regulatory mechanisms remain widely unclear. In this study, we investigate CYP392A16, a P450 from the polyphagous and major agricultural pest Tetranychus urticae. High expression levels of CYP392A16 and in vitro metabolism assays have previously associated this P450 with abamectin resistance. Here, we show that CYP392A16 is primarily localized in the midgut epithelial cells, as indicated by immunofluorescence analysis, a finding also supported by a comparison between feeding and contact toxicity bioassays. Silencing via RNAi of CYP392A16 in a highly resistant T. urticae population reduced insecticide resistance levels from 3400-to 1900-fold, compared to the susceptible reference strain. Marker-assisted backcrossing, using a single nucleotide polymorphism (SNP) found in the CYP392A16 allele from the resistant population, was subsequently performed to create congenic lines bearing this gene in a susceptible genetic background. Toxicity assays indicated that the allele derived from the resistant strain confers 3.6-fold abamectin resistance compared to the lines with susceptible genetic background. CYP392A16 is over expressed at the same levels in these lines, pointing to cis-regulation of gene expression. In support of that, functional analysis of the putative promoter region from the resistant and susceptible parental strains revealed a higher reporter gene expression, confirming the presence of cis-acting regulatory mechanisms.}},
  articleno    = {{103709}},
  author       = {{Papapostolou, Kyriaki Maria and Riga, Maria and Samantsidis, George-Rafael and Skoufa, Evangelia and Balabanidou, Vasileia and Van Leeuwen, Thomas and Vontas, John}},
  issn         = {{0965-1748}},
  journal      = {{INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY}},
  keywords     = {{P450,Marker assisted backcrossing,Immunolocalization,Cis-regulation,RNAi,GATED CHLORIDE CHANNEL,INSECTICIDE RESISTANCE,FUNCTIONAL-CHARACTERIZATION,DROSOPHILA-MELANOGASTER,DELTAMETHRIN RESISTANCE,CYTOCHROME-P450 GENE,PLUTELLA-XYLOSTELLA,POINT MUTATION,SPIDER-MITE,OVEREXPRESSION}},
  language     = {{eng}},
  pages        = {{11}},
  title        = {{Over-expression in cis of the midgut P450 CYP392A16 contributes to abamectin resistance in Tetranychus urticae}},
  url          = {{http://doi.org/10.1016/j.ibmb.2021.103709}},
  volume       = {{142}},
  year         = {{2022}},
}
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