Journal article
Multiple new Phytophthora species from ITS Clade 6 associated with natural ecosystems in Australia: evolutionary and ecological implications
Persoonia - Molecular Phylogeny and Evolution of Fungi, Vol.26, pp.13-39
2011
Abstract
During surveys of dying vegetation in natural ecosystems and associated waterways in Australia many new taxa have been identified from Phytophthora ITS Clade 6. For representative isolates, the region spanning the internal transcribed spacer region of the ribosomal DNA, the nuclear gene encoding heat shock protein 90 and the mitochondrial cox1 gene were PCR amplified and sequenced. Based on phylogenetic analysis and morphological and physiological comparison, four species and one informally designated taxon have been described; Phytophthora gibbosa, P. gregata, P. litoralis, P. thermophila and P. taxon paludosa. Phytophthora gibbosa, P. gregata and P. taxon paludosa form a new cluster and share a common ancestor; they are homothallic and generally associated with dying vegetation in swampy or water-logged areas. Phytophthora thermophila and P. litoralis are sister species to each other and more distantly to P. gonapodyides. Both new species are common in waterways and cause scattered mortality within native vegetation. They are self-sterile and appear well adapted for survival in an aquatic environment and inundated soils, filling the niche occupied by P. gonapodyides and P. taxon salixsoil in the northern hemisphere. Currently the origin of these new taxa, their pathogenicity and their role in natural ecosystems are unknown. Following the precautionary principle, they should be regarded as a potential threat to native ecosystems and managed to minimise their further spread.
Details
- Title
- Multiple new Phytophthora species from ITS Clade 6 associated with natural ecosystems in Australia: evolutionary and ecological implications
- Authors/Creators
- T. Jung (Author/Creator) - Murdoch UniversityM.J.C. Stukely (Author/Creator)G.E.St.J. Hardy (Author/Creator)D. White (Author/Creator)T. Paap (Author/Creator)W.A. Dunstan (Author/Creator)T.I. Burgess (Author/Creator)
- Publication Details
- Persoonia - Molecular Phylogeny and Evolution of Fungi, Vol.26, pp.13-39
- Publisher
- Nationaal Herbarium Nederland
- Identifiers
- 991005544899607891
- Copyright
- © 2011 Nationaal Herbarium Nederland & Centraalbureau voor Schimmelcultures
- Murdoch Affiliation
- Centre for Phytophthora Science and Management
- Language
- English
- Resource Type
- Journal article
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InCites Highlights
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- Collaboration types
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.97 Plant Pathology
- 3.97.1439 Phytophthora Management
- Web Of Science research areas
- Mycology
- ESI research areas
- Plant & Animal Science