Institute of Plant and Microbial Biology, Academia Sinica, Nankang, Taipei 115, Taiwan.
Mol Phylogenet Evol. 2010 Mar;54(3):957-69. doi: 10.1016/j.ympev.2009.12.015. Epub 2009 Dec 24.
To infer the phylogenetic relationships of Xylaria species associated with termite nests within the genus Xylaria and among genera of the subfamily Xylarioideae, beta-tubulin, RPB2, and alpha-actin sequences of 131 cultures of 114 species from Xylaria and 11 other genera of the subfamily were analyzed. These 11 genera included Astrocystis, Amphirosellinia, Discoxylaria, Entoleuca, Euepixylon, Kretzschmaria, Nemania, Podosordaria, Poronia, Rosellinia, and Stilbohypoxylon. We showed that Xylaria species were distributed among three major clades, TE, HY, and PO, with clade TE-an equivalent of the subgenus Pseudoxylaria-encompassing exclusively those species associated with termite nests and the other two clades containing those associated with substrates other than termite nests. Xylaria appears to be a paraphyletic genus, with most of the 11 genera submerged within it. Podosordaria and Poronia, which formed a distinct clade, apparently diverged from Xylaria and the other genera early. Species of Entoleuca, Euepixylon, Nemania, and Rosellinia constituted clade NR, a major clade sister to clade PO, while those of Kretzschmaria were inserted within clade HY and those of Astrocystis, Amphirosellinia, Discoxylaria, and Stilbohypoxylon were within clade PO.
为了推断与白蚁巢共生的拟盘多毛孢属物种以及拟盘多毛孢亚科中属间的系统发育关系，对来自拟盘多毛孢属和拟盘多毛孢亚科 11 个其他属的 131 个培养物的 114 个种的 131 个培养物的β-微管蛋白、RPB2 和α-肌动蛋白序列进行了分析。这 11 个属包括 Astrocystis、Amphirosellinia、Discoxylaria、Entoleuca、Euepixylon、Kretzschmaria、Nemania、Podosordaria、Poronia、Rosellinia 和 Stilbohypoxylon。结果表明，拟盘多毛孢属物种分布在三个主要分支中，即 TE、HY 和 PO，分支 TE 相当于 Pseudoxylaria 亚属，仅包含与白蚁巢相关的物种，而其他两个分支包含与白蚁巢以外的基质相关的物种。拟盘多毛孢属似乎是一个并系群，其中的大多数属都被淹没在里面。形成一个独特分支的 Podosordaria 和 Poronia 显然与拟盘多毛孢属和其他属早期分化。Entoleuca、Euepixylon、Nemania 和 Rosellinia 属形成了一个主要的分支 NR，与 PO 分支密切相关，而 Kretzschmaria 属的物种则插入 HY 分支，Astrocystis、Amphirosellinia、Discoxylaria 和 Stilbohypoxylon 属的物种则插入 PO 分支。
