Global survey of mobile DNA horizontal transfer in arthropods reveals Lepidoptera as a prime hotspot - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue PLoS Genetics Année : 2019

Global survey of mobile DNA horizontal transfer in arthropods reveals Lepidoptera as a prime hotspot

Résumé

More than any other genome components, Transposable Elements (TEs) have the capacity to move across species barriers through Horizontal Transfer (HT), with substantial evolutionary consequences. Previous large-scale surveys, based on full-genomes comparisons, have revealed the transposition mode as an important predictor of HT rates variation across TE superfamilies. However, host biology could represent another major explanatory factor, one that needs to be investigated through extensive taxonomic sampling. Here we test this hypothesis using a field collection of 460 arthropod species from Tahiti and surrounding islands. Through targeted massive parallel sequencing, we uncover patterns of HT in three widely-distributed TE superfamilies with contrasted modes of transposition. In line with earlier findings, the DNA transposons under study (TC1-Mariner) were found to transfer horizontally at the highest frequency, closely followed by the LTR superfamily (Copia), in contrast with the non-LTR superfamily (Jockey), that mostly diversifies through vertical inheritance and persists longer within genomes. Strikingly, across all superfamilies, we observe a marked excess of HTs in Lepidoptera, an insect order that also commonly hosts baculoviruses, known for their ability to transport host TEs. These results turn the spotlight on baculoviruses as major potential vectors of TEs in arthropods, and further emphasize the importance of non-vertical TE inheritance in genome evolution.
Fichier principal
Vignette du fichier
64_Reiss_PLoS_Genetics_2019.pdf (1.25 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-02140494 , version 1 (27-05-2019)

Identifiants

Citer

Daphné Reiss, Gladys Mialdea, Vincent Miele, Damien M. de Vienne, Jean Peccoud, et al.. Global survey of mobile DNA horizontal transfer in arthropods reveals Lepidoptera as a prime hotspot. PLoS Genetics, 2019, 15 (2), pp.e1007965. ⟨10.1371/journal.pgen.1007965⟩. ⟨hal-02140494⟩
104 Consultations
79 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More