@ARTICLE{TreeBASE2Ref14584, author = {Vera Andjic and Mar?a Noel Cortinas and Giles E. St. J. Hardy and Michael J Wingfield and Treena I. Burgess}, title = {Multiple gene genealogies reveal important relationships between species of Phaeophleospora infecting Eucalyptus leaves}, year = {2007}, keywords = {}, doi = {}, url = {}, pmid = {}, journal = {FEMS Microbiology Letters}, volume = {268}, number = {}, pages = {22--33}, abstract = {Eucalypus spp. are increasingly used in production forestry worldwide with over 3 million ha of exotic plantations, especially in the tropics and sub-tropics. The disease load in these plantations has increased over time due to numerous introductions of pathogens from Australia, but also due to host jumps of pathogens from other closely related plant taxa. The most commonly encountered leaf diseases are caused by Mycosphaerella spp. of which Phaeophleospora anamorphs are responsible for several diseases. Three species in particular can cause severe defoliation of young eucalypts; P. destructans, P. eucalypti and P. epicoccoides. Phaeophleospora destructans has a major impact on seedling survival in Asia and has not, as yet, been found in Australia where it is considered a serious threat to the biosecurity and biodiversity of native eucalypts. It can be difficult to distinguish Phaeophleospora spp. based on symptoms and thus a rapid diagnostic tool is required. In this study we have constructed a multiple gene genealogy of the main Phaeophleospora spp. and designed specific primers to detect their presence directly from leaf samples. The phylogenetic position of the species within Mycosphaerella was established and they were all found to be closely related to other important pathogens, M. nubilosa, M. cryptica and Colletogloeopsis zuluensis. The specific primers developed can now be used for diagnostic and screening purposes within Australia.} }

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