Phylogenetic relationships of Pestalotiopsis and allied genera inferred from ribosomal DNA sequences and morphological characters
Phylogenetic relationships of Pestalotiopsis and allied genera inferred from ribosomal DNA sequences and morphological characters
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DOI：
10.1016/s1055-7903(02)00422-0
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发表时间：
2002-12-01
影响因子：
4.1
通讯作者：
Hyde, KD
中科院分区：
文献类型：
--
作者：
Jeewon, R;Liew, ECY;Hyde, KD
基于形态特征的体腔真菌拟盘多毛孢属和其他密切相关属的分类一直是模棱两可的。为了深入了解拟盘多毛孢属及其亲缘关系，对28 S核糖体DNA大亚基区域的一部分进行了研究，并与现有的形态学信息进行了比较。系统发育分析进行了简约，距离和可能性标准。分析结果表明，Bartalinia，Pestalotiopsis，Seimatosporium和Seiridium代表不同的单系群具有较高的自举支持。然而，Truncatella物种与Bartalinia并系，共享一个共同的祖先。已测序的盘多毛孢属物种与拟盘多毛孢属聚类在一起。除单毛藻属和盘毛藻属尚待进一步研究外，其余属应视为独立的自然类群。树的拓扑结构通常与以前的形态学假设一致，最值得注意的是所有Pestalotia物种的位置，除了P. pezizoides，在Pestalotiopsis中。良好的支持分支对应的分生孢子形态的基础上分组解决和形态特征的相对重要性进行了讨论。分子数据也提供了进一步的证据，支持这些coelomycetes与Amphisphaeriaceae的协会。(C)2002 Elsevier Science（美国）。All rights reserved.
The taxonomy of the coelomycetous fungus Pestalotiopsis and other closely related genera based on morphological characters has been equivocal. To gain insight in the phylogenetic relationships of Pestalotiopsis and its allies, part of the large subunit (28S) ribosomal DNA region was examined and compared with existing morphological information. Phylogenetic analyses were conducted using parsimony, distance, and likelihood criteria. Results of the analyses showed that Bartalinia, Pestalotiopsis, Seimatosporium, and Seiridium represent distinct monophyletic groups with high bootstrap support. However, Truncatella species are paraphyletic with Bartalinia, sharing a common ancestor. Pestalotia species sequenced clustered together with Pestalotiopsis. These genera should be recognized as distinct natural groups except for Monochaetia and Discosia, which need to be further resolved. Tree topologies are generally in concordance with previous morphological hypotheses, most notably the placement of all Pestalotia species, except the type P. pezizoides, in Pestalotiopsis. Well-supported clades corresponding to groupings based on conidial morphology were resolved and the relative importance of morphological characters for generic delimitation is discussed. Molecular data also provide further evidence to support the association of these coelomycetes with the Amphisphaeriaceae. (C) 2002 Elsevier Science (USA). All rights reserved.