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Persoonia (2010) 24, 18-28
F. Roets, B.D. Wingfield, Z.W. de Beer, M.J. Wingfield and L.L. Dreyer (2010)
Two new Ophiostoma species from Protea caffra in Zambia
Persoonia 24, 18-28
Abstract: The genus Ophiostoma (Ophiostomatales) has a global distribution and species are best known for their association with bark beetles (Curculionidae: Scolytinae) on conifers. An unusual assemblage of these fungi is closely associated with the African endemic plant genus Protea (Proteaceae). Protea-associated Ophiostoma species are ecologically atypical as they colonise the fruiting structures of various serotinous Protea species. Seven species have been described from this niche in South Africa. It has been speculated that novel species may be present in other African countries where these host plants also occur. This view was corroborated by recent collections of two unknown species from Protea caffra trees in Zambia. In the present study we evaluate the species delineation of these isolates using morphological comparisons with other Protea-associated species, differential growth studies and analyses of DNA sequence data for the ß-tubulin and internal transcribed spacer (ITS1, 5.8S, ITS2) regions. As a result, the species O. protea-sedis sp. nov., and O. zambiensis sp. nov. are described here as new. This study brings the number of Protea-associated Ophiostoma species to nine and highlights the need for more inclusive surveys, including additional African countries and hosts, to elucidate species diversity in this uncharacteristic niche.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: English)
Full text of article
Database assignments for author(s): Francois Roets, Brenda D. Wingfield, Michael J. Wingfield, Z. Wilhelm de Beer
Research topic(s) for pests/diseases/weeds:
identification/taxonomy
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Ophiostoma splendens | Protea (crop) | South Africa | ||
| Sporothrix phasma | Protea (crop) | South Africa | ||
| Sporothrix zambiensis | Protea (crop) | Zambia | ||
| Sporothrix protea-sedis | Protea (crop) | Zambia |
