Department of Botany, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z4.
Mycologia. 2002 Jul-Aug;94(4):651-9. doi: 10.1080/15572536.2003.11833193.
In this paper, we investigate the phylogenetic placement of Pleospora gaudefroyi using partial SSU as well as ITS ribosomal DNA sequences. Both SSU and ITS data sets agreed in the placement of P. gaudefroyi. Parsimony and neighbor-joining analyses of each data set placed P. gaudefroyi within the Pleosporaceae with 100% bootstrap support. Pleospora gaudefroyi was sister taxon in the Pleosporaceae represented by Alternaria alternata, Cochliobolus sativus, Pleospora herbarum, Pyrenophora tritici-repentis and Setosphaeria rostrata. Pleospora gaudefroyi was separated from other genera in the Pleosporaceae in 94% of the bootstrap replicates in parsimony and neighbor-joining analyses. When P. gaudefroyi was constrained to monophyly with P. herbarum, all resulting trees were significantly worse than the optimal tree in both Kishino-Hasegawa and Shimodaira-Hasegawa tests. Pleospora gaudefroyi was therefore excluded from Pleospora, and transferred to the new genus Decorospora placed in the Pleosporaceae. Decorospora (Dothideomycetes) has characteristic ascospores enclosed in a sheath with 4-5 apical extensions. The distribution and substrate types for D. gaudefroyi are summarized and updated based on additional collections.
在本文中，我们使用部分 SSU 和 ITS 核糖体 DNA 序列研究 Pleospora gaudefroyi 的系统发育位置。SSU 和 ITS 数据集均同意 P. gaudefroyi 的位置。每个数据集的简约和邻接法分析将 P. gaudefroyi 置于 Pleosporaceae 内，支持率为 100%。P. gaudefroyi 是 Pleosporaceae 中与 Alternaria alternata、Cochliobolus sativus、Pleospora herbarum、Pyrenophora tritici-repentis 和 Setosphaeria rostrata 代表的姐妹分类群。在简约和邻接法分析中，P. gaudefroyi 在 94%的自举重复中与 Pleosporaceae 中的其他属分开。当将 P. gaudefroyi 与 P. herbarum 约束为单系时，所有生成的树在 Kishino-Hasegawa 和 Shimodaira-Hasegawa 检验中均明显劣于最优树。因此，P. gaudefroyi 被排除在 Pleospora 之外，并转移到新属 Decorospora 中，置于 Pleosporaceae 中。Decorospora（Dothideomycetes）具有特征性的子囊孢子，被一个鞘包裹，有 4-5 个顶端延伸。基于额外的收集，总结和更新了 D. gaudefroyi 的分布和基质类型。
