Alice B. Dennis, Gabriel I. Ballesteros, Stéphanie Robin, Lukas Schrader, Jens Bast, Jan Berghöfer, Leo W. Beukeboom, Maya Belghazi, Anthony Bretaudeau, Jan Buellesbach, Elizabeth Cash, Dominique Colinet, Zoé Dumas, Mohammed Errbii, Patrizia Falabella, Jean-Luc Gatti, Elzemiek Geuverink, Joshua D. Gibson, Corinne Hertaeg, Stefanie Hartmann, Emmanuelle Jacquin-Joly, Mark Lammers, Blas I. Lavandero, Ina Lindenbaum, Lauriane Massardier-Galata, Camille Meslin, Nicolas Montagné, Nina Pak, Marylène Poirié, Rosanna Salvia, Chris R. Smith, Denis Tagu, Sophie Tares, Heiko Vogel, Tanja Schwander, Jean-Christophe Simon, Christian C. Figueroa, Christoph Vorburger, Fabrice Legeai, Jürgen Gadau
- Background
Parasitoid wasps have fascinating life cycles and play an important role in trophic networks, yet little is known about their genome content and function. Parasitoids that infect aphids are an important group with the potential for biological control. Their success depends on adapting to develop inside aphids and overcoming both host aphid defenses and their protective endosymbionts.
Results
We present the de novo genome assemblies, detailed annotation, and comparative analysis of two closely related parasitoid wasps that target pest aphids: Aphidius ervi and Lysiphlebus fabarum (Hymenoptera: Braconidae: Aphidiinae). The genomes are small (139 and 141 Mbp) and the most AT-rich reported thus far for any arthropod (GC content: 25.8 and 23.8%). This nucleotide bias is accompanied by skewed codon usage and is stronger in genes with adult-biased expression. AT-richness may be the consequence of reduced genome size, a near absence of DNA methylation, and energy efficiency. We identify missing desaturase genes, whoseBackground
Parasitoid wasps have fascinating life cycles and play an important role in trophic networks, yet little is known about their genome content and function. Parasitoids that infect aphids are an important group with the potential for biological control. Their success depends on adapting to develop inside aphids and overcoming both host aphid defenses and their protective endosymbionts.
Results
We present the de novo genome assemblies, detailed annotation, and comparative analysis of two closely related parasitoid wasps that target pest aphids: Aphidius ervi and Lysiphlebus fabarum (Hymenoptera: Braconidae: Aphidiinae). The genomes are small (139 and 141 Mbp) and the most AT-rich reported thus far for any arthropod (GC content: 25.8 and 23.8%). This nucleotide bias is accompanied by skewed codon usage and is stronger in genes with adult-biased expression. AT-richness may be the consequence of reduced genome size, a near absence of DNA methylation, and energy efficiency. We identify missing desaturase genes, whose absence may underlie mimicry in the cuticular hydrocarbon profile of L. fabarum. We highlight key gene groups including those underlying venom composition, chemosensory perception, and sex determination, as well as potential losses in immune pathway genes.
Conclusions
These findings are of fundamental interest for insect evolution and biological control applications. They provide a strong foundation for further functional studies into coevolution between parasitoids and their hosts. Both genomes are available at https://bipaa.genouest.org.…
MetadatenAuthor details: | Alice B. DennisORCiD, Gabriel I. Ballesteros, Stéphanie Robin, Lukas Schrader, Jens Bast, Jan Berghöfer, Leo W. Beukeboom, Maya Belghazi, Anthony Bretaudeau, Jan Buellesbach, Elizabeth Cash, Dominique Colinet, Zoé Dumas, Mohammed Errbii, Patrizia Falabella, Jean-Luc Gatti, Elzemiek Geuverink, Joshua D. Gibson, Corinne Hertaeg, Stefanie HartmannORCiDGND, Emmanuelle Jacquin-Joly, Mark Lammers, Blas I. Lavandero, Ina Lindenbaum, Lauriane Massardier-Galata, Camille Meslin, Nicolas Montagné, Nina Pak, Marylène Poirié, Rosanna Salvia, Chris R. Smith, Denis Tagu, Sophie Tares, Heiko Vogel, Tanja Schwander, Jean-Christophe Simon, Christian C. Figueroa, Christoph Vorburger, Fabrice Legeai, Jürgen Gadau |
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DOI: | https://doi.org/10.1186/s12864-020-6764-0 |
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ISSN: | 1471-2164 |
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Title of parent work (English): | BMC Genomics |
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Publisher: | BioMed Central |
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Place of publishing: | London |
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Publication type: | Article |
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Language: | English |
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Date of first publication: | 2020/05/29 |
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Publication year: | 2020 |
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Release date: | 2020/09/15 |
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Tag: | Aphid host; Aphidius ervi; Chemosensory genes; DNA methylation loss; GC content; Lysiphlebus fabarum; Parasitoid wasp; Toll and Imd pathways; Venom proteins; de novo genome assembly |
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Volume: | 21 |
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Number of pages: | 27 |
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Funding institution: | Universität Potsdam |
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Funding number: | PA 2020_051 |
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Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Biochemie und Biologie |
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DDC classification: | 5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie |
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| 6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit |
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Peer review: | Referiert |
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Grantor: | Publikationsfonds der Universität Potsdam |
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Publishing method: | Open Access / Gold Open-Access |
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License (German): | CC-BY - Namensnennung 4.0 International |
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External remark: | Zweitveröffentlichung in der Schriftenreihe Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe ; 989 |
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