Phylogeny and morphology of Helicotubeufia gen. nov., with three new species in Tubeufiaceae from aquatic habitats
Phylogeny and morphology of Helicotubeufia gen. nov., with three new species in Tubeufiaceae from aquatic habitats
复制标题
Helicotubeufia gen 的系统发育和形态。
DOI：
10.5943/mycosphere/9/3/4
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发表时间：
2018-01-01
期刊：
影响因子：
14.6
通讯作者：
To-Anun, C.
中科院分区：
文献类型：
--
作者：
Liu, J. K.;Lu, Y. Z.;To-Anun, C.
我们正在参加一项对亚洲地区沿南北纬度梯度的淡水真菌的调查。从中国和泰国的淡水溪流中获得了5个新的管状蕨科的无性和有性变种。在形态上，它们与管状花序科排列得很好，具有浅表的，单生的，散在的，近球形到椭圆形卵形，深棕色到黑色的子囊；圆柱形的子囊具透明的，纺锤状的，多间隔的，稍微弯曲和有舌状的子囊孢子和丝孢的，幽门孢子的无性形态。基于LSU、ITS和TEF1 α序列数据的系统发育分析表明，它们在管状蕨科属中形成了一个单型分支，但在系统发育上是一个不同的谱系。因此，我们引入了一个新属Helicotubeufia gen. nov，并以3种（H. guangxiensis， H. hydei和H. jonesii）来容纳这些新分类群。给出了详细的描述和插图，并与类似分类群进行了比较。
We are participating in an investigation of freshwater fungi along a north-south latitudinal gradient in the Asian region. Five new collections of asexual and sexual morphs of Tubeufiaceae from decaying wood in freshwater streams were obtained from China and Thailand. Morphologically, they line well with Tubeufiaceae in having superficial, solitary, scattered, subglobose to ellipsoidal-ovate, dark brown to black ascomata; cylindrical asci with hyaline, fusiform, multi-septate, slightly curved and guttulate ascospores and hyphomycetous helicosporous asexual morphs. Phylogenetic analyses based on combined LSU, ITS and TEF1 alpha sequences data indicate that they formed a monotypic clade among the genera of Tubeufiaceae, but as a phylogenetically distinct lineage. Therefore, we introduce a new genus Helicotubeufia gen. nov, with three species (H. guangxiensis, H. hydei and H. jonesii) to accommodate these new taxa. Detailed descriptions and illustrations are provided, as well as the comparisons with similar taxa.