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Stud Mycol 55(1): 199-212 2006
Copyright © 2006 CBS Fungal Biodiversity Centre
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Multi-gene phylogeny for Ophiostoma spp. reveals two new species from Protea infructescences

Francois Roets1, Z. Wilhelm de Beer2, Léanne L. Dreyer1,*, Renate Zipfel3, Pedro W. Crous4 and Michael J. Wingfield2

1 Department of Botany and Zoology, University of Stellenbosch, Matieland, P. Bag X1, 7602, 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 Genetics, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0002, South Africa
4 Centraalbureau voor Schimmelcultures, Fungal Biodiversity Centre, P.O. Box 85167, 3508 AD, Utrecht, The Netherlands

* Correspondence: Léanne L. Dreyer, LD{at}sun.ac.za

Ophiostoma represents a genus of fungi that are mostly arthropod-dispersed and have a wide global distribution. The best known of these fungi are carried by scolytine bark beetles that infest trees, but an interesting guild of Ophiostoma spp. occurs in the infructescences of Protea spp. native to South Africa. Phylogenetic relationships between Ophiostoma spp. from Protea infructescences were studied using DNA sequence data from the β-tubulin, 5.8S ITS (including the flanking internal transcribed spacers 1 and 2) and the large subunit DNA regions. Two new species, O. phasma sp. nov. and O. palmiculminatum sp. nov. are described and compared with other Ophiostoma spp. occurring in the same niche. Results of this study have raised the number of Ophiostoma species from the infructescences of serotinous Protea spp. in South Africa to five. Molecular data also suggest that adaptation to the Protea infructescence niche by Ophiostoma spp. has occurred independently more than once.

Taxonomic novelties: Ophiostoma phasma Roets, Z.W. de Beer & M.J. Wingf. sp. nov., Ophiostoma palmiculminatum Roets, Z.W. de Beer & M.J. Wingf. sp. nov.

Keywords β–tubulin / ITS / LSU / Ophiostoma / phylogeny / Protea




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