A comprehensive phylogeny representing 142 described and 43 provisionally named Phytophthora species is reported here for this rapidly expanding genus. This phylogeny features signature sequences of 114 ex-types and numerous authentic isolates that were designated as representative isolates by the originators of the respective species. Multiple new subclades were assigned in clades 2, 6, 7, and 9. A single species P. lilii was placed basal to clades 1 to 5, and 7. Phytophthora stricta was placed basal to other clade 8 species, P. asparagi to clade 6 and P. intercalaris to clade 10. On the basis of this phylogeny and ancestral state reconstructions, new hypotheses were proposed for the evolutionary history of sporangial papillation of Phytophthora species. Non-papillate ancestral Phytophthora species were inferred to evolve through separate evolutionary paths to either papillate or semi-papillate species.

中文翻译：

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疫霉属的扩展系统发育。


这里报告了这个快速扩张的属的全面系统发育，代表了 142 个已描述的和 43 个暂时命名的疫霉属物种。该系统发育具有 114 个前型和许多真实分离株的特征序列，这些分离株被各个物种的起源者指定为代表性分离株。多个新的分支被分配到分支 2、6、7 和 9。单个物种 P. lilii 被置于分支 1 至 5 和 7 的基础。Phytophthora stricta 被置于其他分支 8 种的基础，P. asparagi 被置于分支的基础。 6和P. intercalaris到进化支10。在此系统发育和祖先状态重建的基础上，对疫霉属物种孢子乳头状化的进化史提出了新的假设。据推测，非乳头状祖先疫霉属物种通过不同的进化路径进化为乳头状或半乳头状物种。