Ophiostoma species (Ophiostomatales, Ascomycota), including two new taxa on eucalypts in Australia

G K Nkuekam; Z Wilhelm De Beer; M J Wingfield; C Mohammed; A J Carnegie; Geoff S Pegg; J Roux

doi:10.1071/BT10231

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Ophiostoma species (Ophiostomatales, Ascomycota), including two new taxa on eucalypts in Australia

Journal article

Open access

Peer reviewed

Ophiostoma species (Ophiostomatales, Ascomycota), including two new taxa on eucalypts in Australia

G K Nkuekam, Z Wilhelm De Beer, M J Wingfield, C Mohammed, A J Carnegie, Geoff S Pegg and J Roux

Australian Journal of Botany, Vol.59(3), pp.283-297

2011

DOI: https://doi.org/10.1071/BT10231

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Abstract

The genus Ophiostoma accommodates ascomycetes in the order Ophiostomatales, some of which are important pathogens of trees. Although these fungi are well known in the northern hemisphere, very little is known regarding their occurrence or importance in Australia. The aim of the present study was to collect Ophiostoma spp. infecting wounds on Eucalyptus spp. in Australia, where most of these trees are native. Collections were made in three states of Australia and the isolates were identified using morphological and multigene-sequence comparisons. Of the 76 isolates collected, two previously unknown species of Ophiostoma were found and these are described here as O. tasmaniense sp. nov. and O. undulatum sp. nov. In addition, O. quercus (Georgev.) Nannf. and O. tsotsi Grobbelaar, Z.W.de Beer M.J.Wingf. are reported for the first time from eucalypts in Australia and the distribution of Pesotum australiae Kamgan Nkuekam, Jacobs Wingfield is expanded to include eucalypts in Tasmania. In pathogenicity tests, very small lesions were observed in both the bark and xylem of E. grandis (Hill) Maiden trees, suggesting that none of the collected species is a pathogen of Eucalyptus spp. © 2011 CSIRO.

Details

Title: Ophiostoma species (Ophiostomatales, Ascomycota), including two new taxa on eucalypts in Australia
Authors: G K Nkuekam (Author) - University of Pretoria, South Africa
Z Wilhelm De Beer (Author) - University of Pretoria, South Africa
M J Wingfield (Author) - University of Pretoria, South Africa
C Mohammed (Author) - University of Tasmania
A J Carnegie (Author) - Forest Science Centre
Geoff S Pegg (Author) - Agri-Science Queensland
J Roux (Author) - University of Pretoria, South Africa
Publication details: Australian Journal of Botany, Vol.59(3), pp.283-297
Publisher: C S I R O Publishing
Date published: 2011
DOI: 10.1071/BT10231
ISSN: 0067-1924
Copyright note: Copyright © 2011 The Authors. The Author Accepted Version is reproduced here in accordance with the publisher's copyright policy. The definitive version is available here: http://dx.doi.org/10.1071/BT10231
Organisation Unit: University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99449295102621
Output Type: Journal article

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