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 Add this item to the list   Phytophthora obscura

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 Summary:Phytophthora obscura Grünwald & Werres, Plant Pathology 61 (3): 618 (2012) [MB#519834] 
 MycoBank #:519834 
 Authors:Grünwald & Werres
 Authors (abbreviated):Grünwald & Werres
 Page #:618
 Year of effective publication:2012
 Date public:2013-01-23 
 Remarks:The new species Phytophthora obscura sp. nov. is formally named based on phylogenetic analysis, host range, KochÂ’s postulates and morphology. P. obscura is homothallic with paragynous antheridia and semipapillate sporangia. P. obscura is genetically closely related to P. syringae and P. austrocedrae and together these three species define a new Phytophthora subclade 8d with significant support for all genetic loci analyzed including 7 nuclear genes and the mitochondrial gene coxII. The morphological and ecological characteristics are very similar to P. syringae, and it is likely that P. obscura was not described earlier because it might have been identified as P. syringae. Artificial inoculations indicated that horse chestnut, kalmia, pieris and rhododendron are hosts and KochÂ’s postulates were confirmed for kalmia from which it was isolated. This pathogen was named after its elusive nature since it has to date rarely been observed in extensive sampling in the US and Germany. 
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