The smut fungal genus Microbotryum (Microbotryales, Pucciniomycotina) contains species that parasitize plants from many different lineages of euasterids, with host specificity of individual parasite species in general being exceptionally high. Additionally, it has been shown that the location of spore production in some species is related to spore dispersal. In this phylogenetic study based on ITS and LSU rDNA data of 57 Microbotryum spp., host spectra and sorus location are mapped on the phylogeny of Microbotryum species in order to understand the macroevolutionary patterns of these two traits. We find that monophyletic parasite clades correspond well with monophyletic host clades and also that monophyletic parasite groups in general produce their spores in the same plant organ. Ancestral state reconstruction inferred the most probable ancestral trait for sorus location being leaves and the most probable ancestral host family for the genus Microbotryum as being the Polygonaceae. According to molecular analyses, a newly sequenced specimen of Ustilago ducellieri, a seed parasite on Arenaria leptoclados, previously treated as synonym of Microbotryum duriaeanum, belongs to a lineage distinct from specimens of M. duriaeanum. A new combination, Microbotryum ducellieri, is accordingly proposed. Taxonomic implications of the presented analyses for the genera Bauhinus and Haradaea are briefly discussed.

中文翻译：

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寄主的偏爱和痛点的位置与黑曲霉菌属微生物菌（Basidiomycota，Microbotryales）中的寄生虫系统发育相关。

残迹真菌属Microbotryum（Microbotryales，柄锈菌）包含的物种，从euasterids许多不同的谱系，与一般的存在个别寄生虫种类非常高的宿主特异性寄生的植物。另外，已经表明，某些物种中孢子产生的位置与孢子的扩散有关。在基于ITS和LSU rDNA序列57的数据这个系统发育研究Microbotryum属，主机光谱和囊群位置被映射的系统发育Microbotryum物种以了解这两个特征的宏观进化模式。我们发现单系寄生虫进化枝与单系宿主进化枝很好地对应，而且单系寄生虫群体通常在同一植物器官中产生它们的孢子。先祖状态重建推断囊群定位为叶子和最可能的祖先寄宿家庭属最可能的祖先性状Microbotryum为蓼。根据分子分析，的新测序样品散黑穗病ducellieri，在晶种上寄生虫蚤leptoclados，以前视为同义词的Microbotryum duriaeanum，属于从标本不同谱系M. duriaeanum。因此，提出了一种新的组合，Microbotryum ducellieri。对于属所提出的分析分类的意义Bauhinus和Haradaea简要讨论。