Journal article
Phytophthora root and collar rot of mature Fraxinus excelsior in forest stands in Poland and Denmark
Forest Pathology, Vol.41(6), pp.510-519
2011
Abstract
In recent years, Common ash (Fraxinus excelsior) throughout Europe has been severely impacted by a leaf and twig dieback caused by the hyphomycete Chalara fraxinea. The reasons for its current devastating outbreak, however, still remain unclear. Here, we report the presence of four Phytophthora taxa in declining ash stands in Poland and Denmark. Phytophthora cactorum, Phytophthora plurivora, Phytophthora taxon salixsoil and Phytophthora gonapodyides were isolated from rhizosphere soil samples and necrotic bark lesions on stems and roots of mature declining ash trees in four stands. The first three species proved to be aggressive to abscised roots, twigs and leaves of F. excelsior in inoculation experiments. Soil infestation tests also confirmed their pathogenicity towards fine and feeder roots of ash seedlings. Our results provide first evidence for an involvement of Phytophthora species as a contributing factor in current decline phenomena of F. excelsior across Europe. Specifically, they may act as a predisposing factor for trees subsequently infected by C. fraxinea. Phytophthora species from ash stands also proved to be aggressive towards a wide range of tree and shrub species commonly associated with F. excelsior in mixed stands. Although damage varied considerably depending on the Phytophthora species/isolate-host plant combination, these results show that many woody species may be a potential source for survival and inoculum build-up of soilborne Phytophthora spp. in ash stands and forest ecosystems in general.
Details
- Title
- Phytophthora root and collar rot of mature Fraxinus excelsior in forest stands in Poland and Denmark
- Authors/Creators
- L.B. Orlikowski (Author/Creator) - Research Institute of Pomology and FloricultureM. Ptaszek (Author/Creator) - Research Institute of Pomology and FloricultureA. Rodziewicz (Author/Creator) - General Direction of the State Forests, Forest Protection Teams in Lodz Bitwy Warszawskiej 1920 r 3, Warsaw, PolandJ. Nechwatal (Author/Creator) - Bavarian State Research Center for AgricultureK. Thinggaard (Author/Creator) - Sdr. Hoejrupvejen 22, Ringe, DenmarkT. Jung (Author/Creator) - Murdoch University
- Publication Details
- Forest Pathology, Vol.41(6), pp.510-519
- Publisher
- Blackwell Publishing
- Identifiers
- 991005543961607891
- Copyright
- © 2011 Blackwell Verlag GmbH.
- Murdoch Affiliation
- Centre for Phytophthora Science and Management
- Language
- English
- Resource Type
- Journal article
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InCites Highlights
These are selected metrics from InCites Benchmarking & Analytics tool, related to this output
- Collaboration types
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.97 Plant Pathology
- 3.97.1439 Phytophthora Management
- Web Of Science research areas
- Forestry
- ESI research areas
- Plant & Animal Science