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首页> 外文期刊>Mycologia >Phylogenetic relationships of russuloid basidiomycetes with emphasis on aphyllophoralean taxa [Review]
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Phylogenetic relationships of russuloid basidiomycetes with emphasis on aphyllophoralean taxa [Review]

机译：芸苔属类担子菌的亲缘关系，着重于aphorlophoralean类群[综述]

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Many homobasidiomycetes are characterized by a combination of gloeocystidia and amyloid basidiospores. They display a great variation in basidioma morphology, including erect and effused forms and gilled and nongilled forms. Earlier studies have shown these taxa to be related, and the group has been named the russuloid clade. Phylogenetic relationships among russuloid basidiomycetes were investigated using sequence data from the nuclear 5.8S, ITS2 and large-subunit rDNA genes. A dataset including 127 ingroup sequences representing 43 genera and ca 120 species were analyzed by maximum-parsimony and neighbor joining methods. The sampling of taxa had an emphasis on nongilled taxa and two-thirds of the species possessed corticioid basidiomata. Thirteen major well-supported clades were identified within the russuloid clade. All clades except one include corticioid species. Ten characters from basidioma morphology and cultured mycelium were observed and evaluated. Results suggest that gloeocystidia are a synapomorphy for taxa within the russuloid clade while the amyloidity of spores is inconsistent. The ornamentation of spores and type of nuclear behavior seems to be informative characters at genus level. The agaricoid genera Lactarius and Russula are nested in a clade with corticioid species at the basal position. The new combinations Boidinia aculeata, Gloeodontia subasperispora, Gloeocystidiopsis cryptacantha and jhlegalocystidium wakullum are proposed.
机译：许多同型担子菌的特征是球囊藻和淀粉样担子孢子的组合。它们在基底瘤的形态上表现出很大的差异，包括直立和渗出形式以及镀金和非镀金形式。较早的研究表明，这些分类单元是相关的，并且该组被称为“类红素进化枝”。利用来自核5.8S，ITS2和大亚基rDNA基因的序列数据，研究了类胡萝卜素担子菌之间的亲缘关系。通过最大简约法和邻居加入法分析了一个包含127个群体内序列的数据集，这些序列代表43个属和大约120种。对分类单元的采样重点是未镀金的分类单元，并且三分之二的物种具有皮质类固醇基basidiomata。在类罗非鱼进化枝中鉴定出13个主要支撑的进化枝。除一个外，所有进化枝都包含皮质类固醇。观察并评估了来自基底细胞瘤形态和培养菌丝体的十个特征。结果表明，球囊藻是类球体进化支中类群的一个同形亚型，而孢子的淀粉样性却不一致。孢子的装饰和核行为的类型似乎是属水平上的信息性特征。乳杆菌属乳杆菌属和红菇属被筑巢在基部，皮质类固醇在基部。提出了新的组合，包括刺桐，小孢子藻，隐孢子虫和黄囊藻。

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