Evolution and biological significance of flaviviral elements in the genome of the arboviral vector Aedes albopictus

Since its genome details are publically available, the mosquito Aedes albopictus has become the central stage of attention for deciphering multiple biological and evolutionary aspects at the root of its success as an invasive species. Its genome of 1,967 Mb harbours an unusual high number of non-retroviral integrated RNA virus sequences (NIRVS). NIRVS are enriched in piRNA clusters and produce piRNAs, suggesting an antiviral effect. Here, we investigated the evolutionary history of NIRVS in geographically distant Ae. albopictus populations by comparing genetic variation as derived by neutral microsatellite loci and seven selected NIRVS. We found that the evolution of NIRVS was far to be neutral with variations both in their distribution and sequence polymorphism among Ae. albopictus populations. The Flaviviral elements AlbFlavi2 and AlbFlavi36 were more deeply investigated in their association with dissemination rates of dengue virus (DENV) and chikungunya virus (CHIKV) in Ae. albopictus at both population and individual levels. Our results show a complex association between NIRVS and DENV/CHIKV opening a new avenue for investigating the functional role of NIRVS as antiviral elements shaping vector competence of mosquitoes to arboviruses.

Medienart:

E-Artikel

Erscheinungsjahr:

2019

Erschienen:

2019

Enthalten in:

Zur Gesamtaufnahme - volume:8

Enthalten in:

Emerging microbes & infections - 8(2019), 1 vom: 15., Seite 1265-1279

Sprache:

Englisch

Beteiligte Personen:

Houé, Vincent [VerfasserIn]
Gabiane, Gaelle [VerfasserIn]
Dauga, Catherine [VerfasserIn]
Suez, Marie [VerfasserIn]
Madec, Yoann [VerfasserIn]
Mousson, Laurence [VerfasserIn]
Marconcini, Michele [VerfasserIn]
Yen, Pei-Shi [VerfasserIn]
de Lamballerie, Xavier [VerfasserIn]
Bonizzoni, Mariangela [VerfasserIn]
Failloux, Anna-Bella [VerfasserIn]

Links:

Volltext

Themen:

Arboviral diseases
Genetic structure
Journal Article
NIRVS
RNA, Small Interfering
Vector competence

Anmerkungen:

Date Completed 03.01.2020

Date Revised 25.02.2020

published: Print

Citation Status MEDLINE

doi:

10.1080/22221751.2019.1657785

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM300783671