2010/11/15 by Cécile Robin, D. Piou, Nicolas Feau +3 · 1 citation
Agricultural and Biological Sciences · Biochemistry, Genetics and Molecular Biology · #Biology #Botany #Chamaecyparis #Deciduous #Ecology #Outbreak #Phytophthora #Phytophthora ramorum #Plant Pathogens and Fungal Diseases #Plant Pathogens and Resistance #Root rot #Sporangium #Spore #Yeasts and Rust Fungi Studies
paper · doi:10.1111/j.1439-0329.2010.00688.x
openalex publication_date 2010/11/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/27
Summary Phytophthora lateralis has been isolated from root and collar lesions in Port‐Orford Cedar (POC) trees ( Chamaecyparis lawsoniana) in north‐western France (Brittany). These trees, planted in hedgerows, displayed symptoms similar to the typical symptoms of POC root disease. Until now, the disease has been found outside of the nurseries only in western North America. Aerial symptoms, not associated with root or collar infections, were also observed, and P. lateralis was isolated from branch lesions. Similar symptoms were previously observed only in one POC root disease site, located in the Pacific coast of Oregon where climatic conditions are similar to those occurring in Brittany. The reported aetiology as well as the morphological characteristics (deciduous sporangia) of P. lateralis suggests that this species could be air‐dispersed, as described for P. ramorum, a closely related species. This outbreak of P. lateralis in Brittany in farming landscapes associated with the aerial spread of this pathogen represents a new threat for European countries.