Phylogeny of nematode-trapping fungi based on 18S rDNA sequences

被引：63
作者：
Ahrén, D
Ursing, BM
Tunlid, A
机构：
[1] Lund Univ, Dept Microbial Ecol, S-22362 Lund, Sweden
[2] Dept Evolut Mol Systemat, S-22362 Lund, Sweden
来源：
FEMS MICROBIOLOGY LETTERS | 1998年 / 158卷 / 02期
关键词：
nematophagous fungus; phylogeny; evolution of infection structure;
D O I：
10.1016/S0378-1097(97)00519-3
中图分类号：
Q93 [微生物学];
学科分类号：
071005 ; 100705 ;
摘要：
The small subunit (SSU) ribosomal DNA (18S rDNA) from 15 species of nematode-trapping fungi and closely related nonparasitic species were sequenced. Phylogenetic analysis indicated that species within the genera of Arthrobotrys, Dactylaria, Dactylella, Monacrosporium and Duddingtonia formed a monophyletic and isolated clade among an unresolved cluster of apothecial ascomycetes. The phylogenetic patterns within this clade were not concordant with the morphology of the conidia nor the conidiophores, but rather with that of the infection structures. The results from the different methods of tree reconstruction supported three lineages; the species having constricting rings, the non-parasitic species and the species having various adhesive structures (nets, hyphae, knobs and non-constricting rings) to infect nematodes. (C) 1998 Federation of European Microbiological Societies. Published by Elsevier Science B.V.
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页码：179 / 184
页数：6
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