BRUSINI, Jérémie; WAYNE, Marta L.; FRANC, Alain; ROBIN, Cécile

doi:10.1002/ece3.3143

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Licence d’utilisation du document

BRUSINI, Jérémie
Biodiversité, Gènes & Communautés [BioGeCo]
Harbor Branch Oceanographic Institute [Fort Pierce]
Department of Biology [Gainesville] [UF|Biology]

WAYNE, Marta L.
Department of Biology [Gainesville] [UF|Biology]

FRANC, Alain
Biodiversité, Gènes & Communautés [BioGeCo]
from patterns to models in computational biodiversity and biotechnology [PLEIADE]

Langue

Article de revue

Ce document a été publié dans

Ecology and Evolution. 2017, vol. 7, n° 15, p. 5967–5976

Wiley Open Access

Résumé en anglais

Parasites are known to profoundly affect resource allocation in their host. In order to investigate the effects of Cryphonectria Hypovirus 1 (CHV1) on the life-history traits of its fungal host Cryphonectria parasitica, an infection matrix was completed with the cross-infection of six fungal isolates by six different viruses. Mycelial growth, asexual sporulation, and spore size were measured in the 36 combinations, for which horizontal and vertical transmission of the viruses was also assessed. As expected by life-history theory, a significant negative correlation was found between host somatic growth and asexual reproduction in virus-free isolates. Interestingly this trade-off was found to be positive in infected isolates, illustrating the profound changes in host resource allocation induced by CHV1 infection. A significant and positive relationship was also found in infected isolates between vertical transmission and somatic growth. This last relationship suggests that in this system, high levels of virulence could be detrimental to the vertical transmission of the parasite. Those results underscore the interest of studying host–parasite interaction within the life-history theory framework, which might permit a more accurate understanding of the nature of the modifications triggered by parasite infection on host biology.< Réduire

Mots clés

transmission verticale

cryphonectria hypovirus

relation hôte-parasite

transmission horizontale

Mots clés en anglais

host-parasite relationship

trade-off

transmission

virulence

vertical transmission of disease

parasite

life-history traits

evolution

host

DOI

http://dx.doi.org/10.1002/ece3.3143

Project ANR

Une approche basée sur les traits d'histoire de vie des champignons phytopathogènes pour faire le lien entre fitness individuelle et stratégies écologiques. - ANR-13-BSV7-0011

Origine

Importé de hal

Unités de recherche

BioGeCo (Biodiversité Gènes & Communautés) - UMR 1202