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首页> 外文期刊>Mycologia >Two taxonomic novelties in the Sordariomycetidae: Ceratolenta caudata gen. et sp nov and Platytrachelan abietis gen. et comb. nov for Ceratosphaeria abietis
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Two taxonomic novelties in the Sordariomycetidae: Ceratolenta caudata gen. et sp nov and Platytrachelan abietis gen. et comb. nov for Ceratosphaeria abietis

机译：夜蛾科中的两个分类学新奇：Ceratoenta caudata gen。 et sp nov和Platytrachelan abietis gen。等。诺贝氏菌

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摘要

Wood-inhabiting taxa of the Sordariomycetidae comprise several distantly related monotypic or small genera, which lack familial or ordinal affiliation and share a simple and inconspicuous morphology of dark ascomata with carbonaceous walls and long necks, stipitate asci and hyaline ellipsoidal, fusiform to cylindrical ascospores. Recent collections of an undescribed fungus and of Ceratosphaeria abietis reveal two additional evolutionary lineages characterized by this simple and indistinct teleomorph morphology. Phylogenetic analysis of three genes, small and large subunit nuclear ribosomal DNA (nc28S and nc18S rDNA) combined with the second largest subunit of RNA polymerase II (rpb2), supports the recognition of two new genera, Ceratolenta and Platytrachelon for C. abietis. Platytrachelon abietis is redescribed and illustrated based on additional collections. In culture it produced a dematiaceous hyphomycetous anamorph with blastic conidiogenesis and ellipsoidal, septate, pale brown conidia. It was associated with a synanamorph producing cylindrical, strongly curved hyaline conidia. Molecular data suggest a relationship of Platytrachelon with the Papulosaceae, while Ceratolenta forms a monophylum on a separate branch. Both taxonomic novelties possess striking morphological similarities with Ceratosphaeria, Lentomitella and Rhodoveronaea, which recently were reinstated based on DNA sequence data. A key to morphologically similar wood-inhabiting fungi classified in the Sordariomycetidae is provided.
机译：虎耳草科的居住于木材中的分类单元包括几个远缘的单型或小属，它们缺乏家族或序序的隶属关系，并具有深色无孔状的简单而不起眼的形态，具有碳质的壁和长的脖子，刺状的腹水和透明的椭圆形，梭形到圆柱状的子囊孢子。最近收集的一种未描述的真菌和无核小球藻（Ceratosphaeria abietis）揭示了两个另外的进化谱系，其特征是这种简单而模糊的远程形态。系统发育分析三个基因，大小亚型核糖体DNA（nc28S和nc18S rDNA）与RNA聚合酶II的第二大亚基（rpb2）结合，支持识别两个新属Ceratolenta和Platytrachelon。鸭嘴兽的侧柏再造基于另外的收藏进行了描述和说明。在培养中，它产生了具有大体分生孢子发生和椭圆形，分隔，浅褐色分生孢子的皮脂性疏球菌无性型。它与产生突触体的圆柱状，强烈弯曲的透明分生孢子有关。分子数据表明，鸭嘴兽与伞形科之间存在某种关系，而角藜芦在另一个分支上形成单门植物。两种分类学上的新颖性都与麦角孢菌，扁线虫和红景天具有惊人的形态相似性，最近它们已经根据DNA序列数据恢复了。提供了分类为虎耳草科中形态相似的居住木材真菌的钥匙。

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