01405nas a2200133 4500008004100000245011200041210006900153300001400222490000700236520092900243100002301172700002601195856005001221 2012 eng d00aSudden Oak Death: Interactions of the Exotic Oomycete Phytophthora ramorum with Naïve North American Hosts0 aSudden Oak Death Interactions of the Exotic Oomycete Phytophthor a1313-13230 v113 a

Ten years after a threatening and previously unknown disease of oaks and tanoaks appeared in coastal California, a significant amount of progress has been made toward the understanding of its causal agent Phytophthora ramorum and of the novel pathosystems associated with this exotic organism. However, a complete understanding of the ecology and epidemiology of this species still eludes us. In part, our inability to fully understand this organism is due to its phylogenetic, phylogeographic, phenotypic, and epidemiological complexities, all reviewed in this paper. Most lines of evidence suggest that the high degree of disease severity reported in California is not simply due to a generalized lack of resistance or tolerance in naïve hosts but also to an innate ability of the pathogen to survive in unfavorable climatic conditions and to reproduce rapidly when conditions become once again favorable.

1 aGarbelotto, Matteo1 aHayden, Katherine, J. uhttp://ec.asm.org/content/11/11/1313.abstract01395nas a2200121 4500008004100000245011200041210006900153490001800222520091700240100002301157700002501180856006801205 2012 eng d00aSudden Oak Death: interactions of the exotic oomycete Phytophthora ramorum with naïve North American hosts0 aSudden Oak Death interactions of the exotic oomycete Phytophthor0 vEarly release3 a

Ten years after a threatening and previously unknown disease of oaks and tanoaks appeared in coastal California, a significant amount of progress has been made towards the understanding of its causal agent Phytophthora ramorum and of the novel pathosystems associated with this exotic organism. However, a complete understanding of the ecology and epidemiology of this species still eludes us. In part, our inability to fully understand this organism is due to its phylogenetic, phylogeographic, phenotypic, and epidemiological complexity, all reviewed in this paper. Most lines of evidence suggest the high disease severity reported in California is not simply due to a generalized lack of resistance or tolerance in na{\"ıve hosts, but also to an innate ability of the pathogen to survive in unfavorable climatic conditions and to reproduce rapidly when conditions become once again favorable.

1 aGarbelotto, Matteo1 aHayden, Katherine, J uhttp://ec.asm.org/content/early/2012/09/18/EC.00195-12.abstract