De Novo Transcriptome Hybrid Assembly and Validation in the European Earwig (Dermaptera; Forficula auricularia; )

Roulin, Anne C. and Wu, Min and Pichon, Samuel and Arbore, Roberto and Kühn-Bühlmann, Simone and Kölliker, Mathias and Walser, Jean-Claude. (2014) De Novo Transcriptome Hybrid Assembly and Validation in the European Earwig (Dermaptera; Forficula auricularia; ). PLoS ONE, Vol. 9, H. 4 , e94098.

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Official URL: http://edoc.unibas.ch/dok/A6289050

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Background The European earwig (Forficula auricularia) is an established system for studies of sexual selection, social interactions and the evolution of parental care. Despite its scientific interest, little knowledge exists about the species at the genomic level, limiting the scope of molecular studies and expression analyses of genes of interest. To overcome these limitations, we sequenced and validated the transcriptome of the European earwig. Methodology and Principal Findings To obtain a comprehensive transcriptome, we sequenced mRNA from various tissues and developmental stages of female and male earwigs using Roche 454 pyrosequencing and Illumina HiSeq. The reads were de novo assembled independently and screened for possible microbial contamination and repeated elements. The remaining contigs were combined into a hybrid assembly and clustered to reduce redundancy. A comparison with the eukaryotic core gene dataset indicates that we sequenced a substantial part of the earwig transcriptome with a low level of fragmentation. In addition, a comparative analysis revealed that more than 8,800 contigs of the hybrid assembly show significant similarity to insect-specific proteins and those were assigned for Gene Ontology terms. Finally, we established a quantitative PCR test for expression stability using commonly used housekeeping genes and applied the method to five homologs of known sex-biased genes of the honeybee. The qPCR pilot study confirmed sex specific expression and also revealed significant expression differences between the brain and antenna tissue samples. Conclusions By employing two different sequencing approaches and including samples obtained from different tissues, developmental stages, and sexes, we were able to assemble a comprehensive transcriptome of F. auricularia. The transcriptome presented here offers new opportunities to study the molecular bases and evolution of parental care and sociality in arthropods.
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Ehemalige Einheiten Umweltwissenschaften > Verhaltensevolution (Kölliker)
UniBasel Contributors:Kölliker, Mathias
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Public Library of Science
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:31 Aug 2018 06:39
Deposited On:06 Mar 2015 07:44

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