AGUAYO, Jaime; FOURRIER-JEANDEL, Céline; CAPDEVIELLE, Xavier; VETILLARD, Fabrice; PIOU, Dominique; ITURRITXA, Eugenia; ROBIN, Cécile

doi:10.1111/efp.12574

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AGUAYO, Jaime
Unité de Mycologie [USC INRAE LSV-mycologie]

FOURRIER-JEANDEL, Céline
Unité de Mycologie [USC INRAE LSV-mycologie]

CAPDEVIELLE, Xavier
Biodiversité, Gènes & Communautés [BioGeCo]

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Article de revue

Ce document a été publié dans

Forest Pathology. 2020, vol. Online first, p. 1-13

Wiley

Résumé en anglais

Fusarium circinatum is the causal agent of pitch canker, a destructive disease that threatens natural and planted pine forests around the world. Although pitch canker has caused problems in Spain and Portugal, concerning Europe as a whole, the fungus is not established across the pine distribution area. Its dispersion by wind and/or insect vectors could nevertheless play a role in the colonization of currently uninfected stands. It is therefore crucial to develop monitoring tools for its detection. To this end, we assessed the molecular detection of the pathogen in environmental samples of bark beetles and passive spore traps, collected in two infected Pinus radiata plantations in Basque country, Spain. The spread pattern of F. circinatum was assessed by an experimental design that included insect and spore traps installed at the centre, at the edge and outside the plots. Our results showed that F. circinatum was detected in both types of samples, at almost all collection dates. In both type of samples, positive detections were mainly found at the centre of the plots, a lower proportion at the edge, and very few outside. This suggests that long-distance dispersion of Fusarium circinatum does not rely on wind spore dispersal neither on insect flight. Our study also shows that molecular methods are a powerful tool to monitor the pathogen in environmental samples.< Réduire

Mots clés en anglais

emerging diseases

Ips sexdentatus

molecular detection tools

pitch canker

DOI

http://dx.doi.org/10.1111/efp.12574

Project ANR

Recherches Avancées sur l'Arbre et les Ecosytèmes Forestiers - ANR-11-LABX-0002

Origine

Importé de hal

Unités de recherche

BioGeCo (Biodiversité Gènes & Communautés) - UMR 1202