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Stud Mycol 55(1): 75-97 2006
DOI: 10.3114/sim.55.1.75
Copyright © 2006 CBS Fungal Biodiversity Centre
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Multi-gene phylogenies define Ceratocystiopsis and Grosmannia distinct from Ophiostoma

Renate D. Zipfel1, Z. Wilhelm de Beer2,*, Karin Jacobs3, Brenda D. Wingfield1 and Michael J. Wingfield2

1 Department of Genetics, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria, 0002, South Africa
2 Department of Microbiology and Plant Pathology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria, 0002, South Africa
3 Department of Microbiology, University of Stellenbosch, Private Bag X1, Matieland, Stellenbosch, South Africa

* Correspondence: Z. Wilhelm de Beer, wilhelm.debeer{at}fabi.up.ac.za

Ophiostoma species have diverse morphological features and are found in a large variety of ecological niches. Many different classification schemes have been applied to these fungi in the past based on teleomorph and anamorph features. More recently, studies based on DNA sequence comparisions have shown that Ophiostoma consists of different phylogenetic groups, but the data have not been sufficient to define clear monophyletic lineages represented by practical taxonomic units. We used DNA sequence data from combined partial nuclear LSU and β-tubulin genes to consider the phylogenetic relationships of 50 Ophiostoma species, representing all the major morphological groups in the genus. Our data showed three well-supported, monophyletic lineages in Ophiostoma. Species with Leptographium anamorphs grouped together and to accommodate these species the teleomorph-genus Grosmannia (type species G. penicillata), including 27 species and 24 new combinations, is re-instated. Another well-defined lineage includes species that are cycloheximide-sensitive with short perithecial necks, falcate ascospores and Hyalorhinocladiella anamorphs. For these species, the teleomorph-genus Ceratocystiopsis (type species O. minuta), including 11 species and three new combinations, is re-instated. A third group of species with either Sporothrix or Pesotum anamorphs includes species from various ecological niches such as Protea infructescences in South Africa. This group also includes O. piliferum, the type species of Ophiostoma, and these species are retained in that genus. Ophiostoma is redefined to reflect the changes resulting from new combinations in Grosmannia and Ceratocystiopsis. Our data have revealed additional lineages in Ophiostoma linked to morphological characters. However, these species are retained in Ophiostoma until further data for a larger number of species can be obtained to confirm monophyly of the apparent lineages.

Taxonomic novelties: Ceratocystiopsis manitobensis (J. Reid & Hausner) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., Cop. parva (Olchow. & J. Reid) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., Cop. rollhanseniana (J. Reid, Eyjólfsd. & Hausner) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., Grosmannia abiocarpa (R.W. Davidson) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., G. aenigmatica (K. Jacobs, M.J. Wingf. & Yamaoka) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., G. americana (K. Jacobs & M.J. Wingf.) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., G. aurea (R.C. Rob. & R.W. Davidson) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., G. cainii (Olchow. & J. Reid) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., G. clavigera (R.C. Rob. & R.W. Davidson) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., G. crassivaginata (H.D. Griffin) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., G. cucullata (H. Solheim) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., G. davidsonii (Olchow. & J. Reid) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., G. dryocoetidis (W.B. Kendr. & Molnar) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., G. europhioides (E.F. Wright & Cain) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., G. francke-grosmanniae (R.W. Davidson) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., G. galeiformis (B.K. Bakshi) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., G. grandifoliae (R.W. Davidson) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., G. huntii (R.C. Rob.) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., G. laricis (K. van der Westh., Yamaoka & M.J. Wingf.) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., G. leptographioides (R.W. Davidson) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., G. olivacea (Math.-Käärik) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., G. pseudoeurophioides (Olchow. & J. Reid) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., G. radiaticola (J.-J. Kim, Seifert, & G.-H. Kim) Z.W. de Beer & M.J. Wingf. comb. nov., G. robusta (R.C. Rob. & R.W. Davidson) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., G. sagmatospora (E.F. Wright & Cain) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., G. vesca (R.W. Davidson) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov., G. wageneri (Goheen & F.W. Cobb) Zipfel, Z.W. de Beer & M.J. Wingf. comb. nov.

Keywords Ceratocystiopsis / Grosmannia / Ophiostoma / phylogenetics




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