Two new species of Phaeohelotium (Leotiomycetes: Helotiaceae) from Chile and their putative ectomycorrhizal status.
Two new species of Phaeohelotium (Leotiomycetes: Helotiaceae) from Chile and their putative ectomycorrhizal status.
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智利及其假定的外生肌肉状态的两种新的phaeohohotium（白疗法：Helotiaceae）。
DOI：
10.3114/fuse.2022.10.10
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发表时间：
2022-12
期刊：
影响因子：
--
通讯作者：
Quandt, C A
中科院分区：
文献类型：
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作者：
Grupe Ii, A C;Smith, M E;Weier, A;Healy, R;Caiafa, M V;Pfister, D H;Haelewaters, D;Quandt, C A
棕伞菌属是一种杯状真菌，生长在腐烂的木材、树叶、枯枝落叶和土壤上。北半球的物种主要在凋落物和木材上发现，而在南半球，该属包括腐生营养物质和与外生菌根树相关的生长在土壤上的分类群。该属的多样性在南美洲南部还没有得到充分的探索。在这里，我们描述了来自智利的两个种：Phaeoheltium maiusaurantium sp.11月和梅毒螺旋体(Ph.palliumsp.)11月，在巴塔哥尼亚诺瓦科占主导地位的森林的土壤上发现。我们提供宏观和微观形态描述、插图和分子系统发育分析。这两个新种在我们的15个基因座的系统发育和基于核糖体RNA基因内部转录间隔区(ITS)的系统发育重建中得到了高度支持。我们的ITS系统发育将Ph.maiusaurantium和Ph.pallium都放在一个支持良好的亚支中，其中包括来自澳大拉西亚的外生菌根根尖样本。根据形态特征、生物地理、底物和序列数据，可以从这些新的分类群中分离出相似的种。此外，来自智利罗汉果科森林的两个未命名种(Phaeoheltium sp.1和褐球藻Phaeohelotum sp.2)从稀少的收集和序列数据中被记录下来，并等待描述，直到有更多的材料可用。引文：Grupe II AC，Smith ME，Weer A，Healy R，Caiafa MV，Pfister DH，Haelewats D，Quandt CA(2022)。标题智利棕伞菌属二新种及其外生菌根状态。真菌系统学与进化10：231-249.DOI：10.3114/fuse.2022.10.10
Species of the genus Phaeohelotium (Leotiomycetes: Helotiaceae) are cup fungi that grow on decaying wood, leaves, litter, and directly on soil. Northern Hemisphere species are primarily found on litter and wood, whereas in the Southern Hemisphere the genus includes a mix of saprotrophs as well as taxa that grow on soil in association with ectomycorrhizal trees. The diversity of this genus has not been fully explored in southern South America. Here we describe two species from Chile, Phaeohelotium maiusaurantium sp. nov. and Ph. pallidum sp. nov., found on soil in Patagonian Nothofagaceae-dominated forests. We present macro- and micromorphological descriptions, illustrations, and molecular phylogenetic analyses. The two new species are placed in Phaeohelotium with high support in our 15-locus phylogeny as well as phylogenetic reconstructions based on the internal transcribed spacer (ITS) region of the nuclear ribosomal RNA gene. Our ITS phylogeny places both Ph. maiusaurantium and Ph. pallidum in a well-supported subclade that includes ectomycorrhizal root tip samples from Australasia. Similar species can be separated from these new taxa based on morphological characteristics, biogeography, substrate, and sequence data. In addition, two unnamed species from Chilean Nothofagaceae forests (Phaeohelotium sp. 1 and Phaeohelotium sp. 2) are documented from scant collections and sequence data and await description until more material becomes available. Citation: Grupe II AC, Smith ME, Weier A, Healy R, Caiafa MV, Pfister DH, Haelewaters D, Quandt CA (2022). Two new species of Phaeohelotium (Leotiomycetes: Helotiaceae) from Chile and their putative ectomycorrhizal status. Fungal Systematics and Evolution 10: 231–249. doi: 10.3114/fuse.2022.10.10