@ARTICLE{TreeBASE2Ref22373, author = {B?atrice Henricot and Ana Perez Sierra and Thomas Jung}, title = {Phytophthora pachypleura sp. nov., a new species causing root rot of Aucuba japonica and other ornamentals in the United Kingdom}, year = {2014}, keywords = {citricola, plurivora, multivora, phylogeny, pathogenicity}, doi = {10.1111/ppa.12194}, url = {http://}, pmid = {}, journal = {Plant Pathology}, volume = {63}, number = {5}, pages = {1095--1109.}, abstract = {Isolates of an unknown Phytophthora species from the ?Phytophthora citricola complex? have been found associated with the death of Aucuba japonica in the UK. Based on morphological characteristics, growth-temperature relationships, sequences of five DNA regions and pathogenicity assays the proposed novel species is described as Phytophthora pachypleura. Being homothallic with paragynous antheridia and semipapillate sporangia P. pachypleura resembles other species in the ?P. citricola complex? but can be separated due to its distinctively thick-walled oospores with an oospore wall index of 0.71. In the phylogenetic analysis P. pachypleura formed a distinct clade within the ?P. citricola complex? with P. citricola s.str. as its closest relative. Lack of genetic variation suggests that the UK population might be the result of a clonal introduction. P. pachypleura is more aggressive on A. japonica than P. plurivora and P. multivora and has the potential to affect other ornamentals. } }

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