ABSTRACT A fungus causing false smut in the flowers of Murdannia keisak (Commelinaceae, Commelinales, Monocots) in Japan was morphologically identical to Ustilago aneilematis. The fungus infected ovaries of most flowers of host plants. Infected flowers were filled with yellow to orange thick-walled conidia that became olivaceous green at maturity. However, multilocus phylogenetic analysis of DNA sequences (18S, 28S, translation elongation factor 1α [TEF], the largest [RPB1] and the second largest [RPB2] subunit of RNA polymerase II) showed that the fungus belonged to the tribe Ustilaginoideae (Clavicipitaceae, Hypocreales, Ascomycota). Microscopic examination showed that the fungus developed conidia at the apex of conidiogenous cells, in contrast to other species in the Ustilaginoideae that develop conidia pleurogenously. A new genus, Commelinaceomyces, is formally proposed in the Ustilaginoideae to accommodate this fungus. Four species previously misplaced in Ustilago (Ustilaginales, Basidiomycota) are transferred to Commelinaceomyces, including the type of the genus, C. aneilematis, on Murdannia keisak. This is the first report of a clavicipitaceous species infecting host plants in the Commelinaceae.

中文翻译：

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Commelinaceomyces，基因。11 月，对于在 Ustilago 中错放的感染 Commelinaceae 的四种锁骨物种

摘要 一种在日本牡丹科（Commelinaceae，Commelinales，Monocots）的花中引起假黑穗病的真菌在形态上与 Ustilago aneilematis 相同。真菌感染寄主植物大多数花的子房。受感染的花充满了黄色到橙色的厚壁分生孢子，成熟时变成橄榄绿色。然而，DNA 序列（18S、28S、翻译延伸因子 1α [TEF]、RNA 聚合酶 II 的最大 [RPB1] 和第二大 [RPB2] 亚基）的多位点系统发育分析表明，该真菌属于黑粉菌科（Clavicipitaceae）。 , Hypocreales, 子囊菌)。显微镜检查表明，该真菌在分生孢子细胞的顶端形成分生孢子，这与黑粉科的其他物种在胸膜上形成分生孢子形成鲜明对比。一个新的属，Commelinaceomyces，正式提出在 Ustilaginoideae 以适应这种真菌。先前在 Ustilago 中错位的四种物种（Ustilaginales、Basidiomycota）被转移到 Commelinaceomyces，包括 Murdannia keisak 上的 C. aneilematis 属的类型。这是第一个报告了栉树科植物感染寄主植物的锁骨科物种。