Genetic mechanisms modulating behaviour through plastic chemosensory responses in insects

Kohlmeier, Philip; Billeter, Jean‐Christophe

doi:10.1111/mec.16739

Cited by 8 publications

(6 citation statements)

References 250 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, we took a more general approach; we identified 263 candidate transcripts for both CHCB and OD. This group included chemosensory receptors (gustatory and odorant), odorant-binding proteins (OBPs), sensory neuron membrane proteins, odorant degrading enzymes and ion channels, all noted as groups of interest in a recent review [ 58 ]. We tested the overall patterns of differential expression between genotypes in both sexes using previously published RNA-seq data from 17 European adults (3 αα ♀, 6 ββ ♀, 3 αα ♂, 5 ββ ♂) [ 45 ].…”

Section: Resultsmentioning

confidence: 99%

A supergene in seaweed flies modulates male traits and female perception

Enge,

Mérot,

Mozūraitis

et al. 2023

Proc. R. Soc. B.

View full text Add to dashboard Cite

Supergenes, tightly linked sets of alleles, offer some of the most spectacular examples of polymorphism persisting under long-term balancing selection. However, we still do not understand their evolution and persistence, especially in the face of accumulation of deleterious elements. Here, we show that an overdominant supergene in seaweed flies, Coelopa frigida , modulates male traits, potentially facilitating disassortative mating and promoting intraspecific polymorphism. Across two continents, the Cf-Inv(1) supergene strongly affected the composition of male cuticular hydrocarbons (CHCs) but only weakly affected CHC composition in females. Using gas chromatography–electroantennographic detection, we show that females can sense male CHCs and that there may be differential perception between genotypes. Combining our phenotypic results with RNA-seq data, we show that candidate genes for CHC biosynthesis primarily show differential expression for Cf-Inv(1) in males but not females. Conversely, candidate genes for odorant detection were differentially expressed in both sexes but showed high levels of divergence between supergene haplotypes. We suggest that the reduced recombination between supergene haplotypes may have led to rapid divergence in mate preferences as well as increasing linkage between male traits, and overdominant loci. Together this probably helped to maintain the polymorphism despite deleterious effects in homozygotes.

show abstract

Section: Resultsmentioning

confidence: 99%

A supergene in seaweed flies modulates male traits and female perception

Enge,

Mérot,

Mozūraitis

et al. 2023

Proc. R. Soc. B.

View full text Add to dashboard Cite

show abstract

“…By mediating the ligand transport through the sensillar endolymph to the activation of chemosensory transmembrane proteins [ 7 , 8 ], OBPs and CSPs play a crucial role in insect behavioral and physiological adaptation, including food seeking, reproduction, and pesticide resistance [ 58 ].…”

Section: Discussionmentioning

confidence: 99%

Odorant-Binding Proteins and Chemosensory Proteins in Spodoptera frugiperda: From Genome-Wide Identification and Developmental Stage-Related Expression Analysis to the Perception of Host Plant Odors, Sex Pheromones, and Insecticides

Jia

Mohamed

Cattaneo

et al. 2023

IJMS

View full text Add to dashboard Cite

Spodoptera frugiperda is a worldwide generalist pest with remarkable adaptations to environments and stresses, including developmental stage-related behavioral and physiological adaptations, such as diverse feeding preferences, mate seeking, and pesticide resistance. Insects’ odorant-binding proteins (OBPs) and chemosensory proteins (CSPs) are essential for the chemical recognition during behavioral responses or other physiological processes. The genome-wide identification and the gene expression patterns of all these identified OBPs and CSPs across developmental stage-related S. frugiperda have not been reported. Here, we screened for genome-wide SfruOBPs and SfruCSPs, and analyzed the gene expression patterns of SfruOBPs and SfruCSPs repertoires across all developmental stages and sexes. We found 33 OBPs and 22 CSPs in the S. frugiperda genome. The majority of the SfruOBP genes were most highly expressed in the adult male or female stages, while more SfruCSP genes were highly expressed in the larval or egg stages, indicating their function complementation. The gene expression patterns of SfruOBPs and SfruCSPs revealed strong correlations with their respective phylogenic trees, indicating a correlation between function and evolution. In addition, we analyzed the chemical-competitive binding of a widely expressed protein, SfruOBP31, to host plant odorants, sex pheromones, and insecticides. Further ligands binding assay revealed a broad functional related binding spectrum of SfruOBP31 to host plant odorants, sex pheromones, and insecticides, suggesting its potential function in food, mate seeking, and pesticide resistance. These results provide guidance for future research on the development of behavioral regulators of S. frugiperda or other environmentally friendly pest-control strategies.

show abstract

“…Various proteins are involved in odor reception in insects, such as odorant-binding proteins (OBPs), chemosensory proteins (CSPs), odorant receptors (ORs), ionotropic receptors (IRs), gustatory receptors (GRs), and sensory neuron membrane proteins (SNMPs), playing a crucial role in detecting, transporting, and/or recognizing specific odor molecules (Leal, 2013;Ha & Smith, 2022;Kohlmeier & Billeter, 2023). The ability to exploit novel host sources T A B L E 1 Deviance analysis for parasitism and emergence rate of Trichogramma pretiosum in Ephestia kuehniella or Spodoptera frugiperda eggs when T. pretiosum parasitoids from E. kuehniella eggs or from the 1st, 2nd, or 3rd generations in S. frugiperda eggs were tested in two-choice assays.…”

Section: Discussionmentioning

confidence: 99%

“…Various proteins are involved in odor reception in insects, such as odorant‐binding proteins (OBPs), chemosensory proteins (CSPs), odorant receptors (ORs), ionotropic receptors (IRs), gustatory receptors (GRs), and sensory neuron membrane proteins (SNMPs), playing a crucial role in detecting, transporting, and/or recognizing specific odor molecules (Leal, 2013; Ha & Smith, 2022; Kohlmeier & Billeter, 2023). The ability to exploit novel host sources often requires changes in the chemosensory system as it enables an individual to identify, locate, and become attracted to a different host.…”

Section: Discussionmentioning

confidence: 99%

Chemotactic responses and parasitism of Trichogramma pretiosum after successive generations in Spodoptera frugiperda

Vargas,

Redaelli,

Sant'Ana

et al. 2023

Entomologia Exp Applicata

View full text Add to dashboard Cite

Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) is an important parasitoid of lepidopteran pests. Its parasitism success is related to its foraging behavior, mediated by kairomones from its hosts. We aimed to evaluate the chemotactic responses and parasitism of T. pretiosum from Ephestia kuehniella (Zeller) (Lepidoptera: Pyralidae) eggs as well as the parasitoid maintained for three generations in Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae) eggs. Chemotactic responses of T. pretiosum from both hosts were evaluated in a dual choice olfactometer. Females were submitted to a choice between washed vs. unwashed eggs of E. kuehniella or S. frugiperda, as well as to unwashed eggs of both hosts. Egg extracts of both hosts were also contrasted with hexane and with each other. Parasitism of T. pretiosum exposed to eggs of the two species was also evaluated. Females from E. kuehniella were more attracted to odors from eggs of this host whenever it was present. Third generation parasitoids from S. frugiperda eggs were more attracted to eggs and egg extract of S. frugiperda than to those from E. kuehniella. The highest number of parasitized eggs and emerged parasitoids in S. frugiperda was observed in parasitoids coming from the third generation in this host. Therefore, imaginal conditioning could be an alternative to be considered for T. pretiosum learning before releasing, possibly optimizing its search and parasitism process in S. frugiperda eggs.

show abstract

Genetic mechanisms modulating behaviour through plastic chemosensory responses in insects

Cited by 8 publications

References 250 publications

A supergene in seaweed flies modulates male traits and female perception

A supergene in seaweed flies modulates male traits and female perception

Odorant-Binding Proteins and Chemosensory Proteins in Spodoptera frugiperda: From Genome-Wide Identification and Developmental Stage-Related Expression Analysis to the Perception of Host Plant Odors, Sex Pheromones, and Insecticides

Chemotactic responses and parasitism of Trichogramma pretiosum after successive generations in Spodoptera frugiperda

Contact Info

Product

Resources

About