Genomic Features of the Damselfly Calopteryx splendens Representing a Sister Clade to Most Insect Orders.

Détails

Ressource 1Télécharger: gkw1119.pdf (2600.13 [Ko])
Etat: Serval
Version: Final published version
ID Serval
serval:BIB_61DD07C7F88A
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Genomic Features of the Damselfly Calopteryx splendens Representing a Sister Clade to Most Insect Orders.
Périodique
Genome Biology and Evolution
Auteur(s)
Ioannidis P., Simao F.A., Waterhouse R.M., Manni M., Seppey M., Robertson H.M., Misof B., Niehuis O., Zdobnov E.M.
ISSN
1759-6653 (Electronic)
ISSN-L
1759-6653
Statut éditorial
Publié
Date de publication
2017
Peer-reviewed
Oui
Volume
9
Numéro
2
Pages
415-430
Langue
anglais
Résumé
Insects comprise the most diverse and successful animal group with over one million described species that are found in almost every terrestrial and limnic habitat, with many being used as important models in genetics, ecology, and evolutionary research. Genome sequencing projects have greatly expanded the sampling of species from many insect orders, but genomic resources for species of certain insect lineages have remained relatively limited to date. To address this paucity, we sequenced the genome of the banded demoiselle, Calopteryx splendens, a damselfly (Odonata: Zygoptera) belonging to Palaeoptera, the clade containing the first winged insects. The 1.6 Gbp C. splendens draft genome assembly is one of the largest insect genomes sequenced to date and encodes a predicted set of 22,523 protein-coding genes. Comparative genomic analyses with other sequenced insects identified a relatively small repertoire of C. splendens detoxification genes, which could explain its previously noted sensitivity to habitat pollution. Intriguingly, this repertoire includes a cytochrome P450 gene not previously described in any insect genome. The C. splendens immune gene repertoire appears relatively complete and features several genes encoding novel multi-domain peptidoglycan recognition proteins. Analysis of chemosensory genes revealed the presence of both gustatory and ionotropic receptors, as well as the insect odorant receptor coreceptor gene (OrCo) and at least four partner odorant receptors (ORs). This represents the oldest known instance of a complete OrCo/OR system in insects, and provides the molecular underpinning for odonate olfaction. The C. splendens genome improves the sampling of insect lineages that diverged before the radiation of Holometabola and offers new opportunities for molecular-level evolutionary, ecological, and behavioral studies.

Mots-clé
Animals, Evolution, Molecular, Genome, Insect, Insect Proteins/genetics, Molecular Sequence Annotation, Odonata/classification, Odonata/genetics, Open Reading Frames, Phylogeny, Odonata, Palaeoptera, banded demoiselle, damselfly, whole genome sequencing, winged insect
Pubmed
Web of science
Open Access
Oui
Création de la notice
19/09/2017 12:12
Dernière modification de la notice
08/05/2019 19:27
Données d'usage