Evaluation of the Susceptibility of Several Czech Conifer Provenances to Fusarium circinatum

Forests

Jorge Martín-García¹  Miloň Dvořák²  Aneta Lukačevičová²  Julio Javier Diez³  Juan Asdrúbal Flores-Pacheco³ 

[1] Department of Biology, CESAM (Centre for Environmental and Marine Studies), University of Aveiro, Campus Universitario de Santiago, 3810-193 Aveiro, Portugal;Department of Forest Protection and Wildlife Management, Faculty of Forestry and Wood Technology, Mendel University in Brno, Zemědělská 3, Brno 61300, Czech Republic;Sustainable Forest Management Research Institute, University of Valladolid—INIA, Avenida de Madrid 44, 34071 Palencia, Spain;

关键词: pitch canker;    provenance;    pathogenicity;    symptomless;    Pinus;    Picea;    Larix;   

DOI  :  10.3390/f9020072

来源: DOAJ

【 摘 要 】

Pine pitch canker (PPC), caused by Fusarium circinatum, is considered among the most important diseases affecting pines in many locations throughout the world. In Europe, F. circinatum is currently present in the Iberian Peninsula, posing a high risk of its spread into currently disease-free countries in Europe. In the present study, the susceptibility of Pinus sylvestris, Picea abies, and Larix decidua originating in the Czech Republic to F. circinatum was tested. Furthermore, the presence of asymptomatic yet infected seedlings was also checked. This study demonstrated the pathogenicity of F. circinatum to the Czech provenance of P. sylvestris, whereas Picea abies and Larix decidua proved to be tolerant. The reisolation of F. circinatum beyond the inoculation point demonstrated that this quarantine pathogen is able to infect the three conifers tested, giving rise to asymptomatic seedlings for at least eight and a half months. To our knowledge, this is the first study in which the presence of symptomless seedlings has been recorded in the genera Picea and Larix. This finding points out that the European legislation would fail to avoid the risk of new introductions via symptomless seedlings, since this legislation is only restricted to plants of the genus Pinus and the species Pseudotsuga menziesii.

【 授权许可】

Unknown