Phylogenetic reassessment of Hyaloscyphaceae sensu lato (Helotiales, Leotiomycetes) based on multigene analyses

被引:76
作者
Han, Jae-Gu [1 ]
Hosoya, Tsuyoshi [2 ]
Sung, Gi-Ho [3 ]
Shin, Hyeon-Dong [1 ]
机构
[1] Korea Univ, Coll Life Sci & Biotechnol, Div Environm Sci & Ecol Engn, Seoul 136701, South Korea
[2] Natl Museum Nat & Sci, Dept Bot, Tsukuba, Ibaraki 3050005, Japan
[3] Natl Inst Hort & Herbal Sci, Mushroom Res Div, Dept Herbal Crop Res, Rural Dev Adm, Suwon 441707, South Korea
关键词
Arachnopezizeae; Evolution; Hyaloscypheae; Lachneae; Taxonomy; RIBOSOMAL DNA; EVOLUTIONARY RELATIONSHIPS; BETA-TUBULIN; FUNGI; MAFFT; GENUS; SCLEROTINIACEAE; PEZIZOMYCOTINA; REVISIONARY; SEQUENCES;
D O I
10.1016/j.funbio.2013.11.004
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Hyaloscyphaceae is the largest family in Helotiales, Leotiomycetes. It is mainly characterized by minute apothecia with well-differentiated hairs, but its taxonomic delimitation and infrafamilial classification remain ambiguous. This study performed molecular phylogenetic analyses using multiple genes including the ITS-5.8S rDNA, the D1-D2 region of large subunit of rDNA, RNA polymerase II subunit 2, and the mitochondrial small subunit. The primary objective was to evaluate the phylogenetic utility of morphological characters traditionally used in the taxonomy of Hyaloscyphaceae through reassessment of the monophyly of this family and its genera. The phylogenetic analyses inferred Hyaloscyphaceae as being a heterogeneous assemblage of a diverse group of fungi and not supported as monophyletic. Among the three tribes of Hyaloscyphaceae only Lachneae formed a monophyletic lineage. The presence of hairs is rejected as a synapomorphy, since morphologically diversified hairs have originated independently during the evolution of Helotiales. The true- and false-subiculum in Arachnopezizeae are,hypothesized to have evolved through different evolutionary processes; the true-subiculum is likely the product of a single evolutionary origin, while the false-subiculum is hypothesized to have originated multiple times. Since Hyaloscyphaceae sensu lato was not resolved as monophyletic, Hyaloscyphaceae sensu stricto is redefined and only applied to the genus Hyaloscypha. (C) 2013 The British Mycological Society. Published by Elsevier Ltd. All rights reserved.
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收藏
页码:150 / 167
页数:18
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