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首页> 外文期刊>Mycologia >Meredithblackwellia eburnea gen. et sp nov., Kriegeriaceae fam. nov and Kriegeriales ord. nov.-toward resolving higher-level classification in Microbotryomycetes
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Meredithblackwellia eburnea gen. et sp nov., Kriegeriaceae fam. nov and Kriegeriales ord. nov.-toward resolving higher-level classification in Microbotryomycetes

机译：Meredithblackwellia eburnea gen。等，Kriegeriaceae fam。 nov和Kriegeriales ord。从前到前解决微型菌类的更高级别分类

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A field survey of ballistosporic yeasts in a Neotropical forest yielded a new species isolated from a fern leaf. The isolate is a cream-colored butyrous yeast that reproduces by budding. Budding occurs at both the apical and basal cell poles; occasionally multiple budding events co-occur, giving rise to rosette-like clusters of cells at both poles of the yeast mother cell. DNA sequences of large and small subunit and the internal transcribed spacer regions of the nuclear ribosomal DNA cistron indicated an affinity to Microbotryomycetes, Pucciniomycotina. A new genus, Meredithblackwellia, is proposed to accommodate the new species, M. eburnea (type strain MCA4105). Based on phylogenetic analyses, Meredithblackwellia is related to Kriegeria eriophori, a sedge parasite, to an aquatic fungus Camptobasidium hydrophilum and to several recently described anamorphic yeasts that have been isolated from plant material or psychrophilic environments. Morphological and ultrastructural studies confirm the relatedness of M. eburnea to these taxa and prompted the re-evaluation of higher-level classification within Microbotryomycetes. We propose here a new order, Kriegeriales, and place two families, Kriegeriaceae fam. nov. and Camptobasidiaceae R.T. Moore, within it. Our study re-emphasizes the need for systematic revision of species described in Rhodotorula.
机译：在新热带森林中对弹道孢子酵母进行的现场调查产生了一种从蕨类叶子中分离出的新物种。分离物是米色的丁香酵母，可通过出芽繁殖。芽发生在顶端和基底细胞的两极。偶尔会同时发生多个出芽事件，从而在酵母母细胞的两个极点都产生类似玫瑰花状的细胞簇。大和小的亚基的DNA序列以及核糖体DNA顺反子的内部转录间隔区表明对微菌，Pucciniomycotina有亲和力。提出了一种新的属，Meredithblackwellia，以容纳新的种，M。eburnea（类型菌株MCA4105）。基于系统发育分析，梅勒黑毛病与莎草寄生虫（Kriegeria eriophori），莎草寄生虫，水生真菌嗜水喜树（Camptobasidium hydrophilum）以及最近从植物材料或嗜冷环境中分离出来的几种变形酵母有关。形态学和超微结构研究证实了伯氏甲烷八叠球菌与这些分类单元的相关性，并促使对微生物菌丝体中更高级别分类的重新评估。我们在这里提出一个新订单，Kriegeriales，并放置两个家庭，Kriegeriaceae fam。十一月和Camptobasidiaceae R.T.摩尔，在里面。我们的研究再次强调了对红景天属物种进行系统修订的必要性。

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