ABSTRACT Fomitiporia is a genus of wood-inhabiting Hymenochaetaceae (Agaricomycetes) that includes pathogens and decomposers occurring on a wide array of plant substrates. Some species decay culms of woody bamboos, a poorly known biotic interaction. Four bambusicolous species of Fomitiporia are currently known. However, no studies concerning their phylogenetic relationships have been performed. In order to assess species boundaries and their relationships to each other, we conducted molecular phylogenetic analyses of nuc rDNA internal transcribed spacer region ITS1-5.8S-ITS2 (ITS) and portions of nuc 28S rDNA (28S), RNA polymerase II second largest subunit (RPB2), and translation elongation factor 1-α (TEF1), as well as morphological analyses. Four species that occur on culms of woody bamboos, F. bambusarum, F. spinescens, F. uncinata, and the new species F. bambusipileata, grouped together in an exclusive clade within a primarily Neotropical lineage. The new species differs from all other species in the group by the pileate basidiomata. Hypotheses regarding host-exclusivity are discussed.

中文翻译：

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重新审视 Bambusicolous Fomitiporia：多位点系统发育揭示了宿主独有物种的进化枝

摘要 Fomitiporia 是木栖膜菌科 (Agaricomycetes) 的一个属，包括发生在各种植物基质上的病原体和分解者。一些物种会腐烂木本竹的茎秆，这是一种鲜为人知的生物相互作用。Fomitiporia 的四种竹色物种目前是已知的。然而，尚未进行关于它们的系统发育关系的研究。为了评估物种边界及其彼此之间的关系，我们对 nuc rDNA 内部转录间隔区 ITS1-5.8S-ITS2 (ITS) 和部分 nuc 28S rDNA (28S)、RNA 聚合酶 II 第二大亚基进行了分子系统发育分析(RPB2) 和翻译延伸因子 1-α (TEF1)，以及形态分析。出现在木本竹秆上的四种物种，竹竹、刺竹、竹竹、和新物种 F. bambusipileata，在一个主要的新热带谱系中聚集在一个独特的进化枝中。新物种与该组中的所有其他物种的不同之处在于有毛担子。讨论了关于宿主排他性的假设。