Ceratocystis species, including two new species associated with nitidulid beetles, on eucalypts in Australia |
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| Authors: | Gilbert Kamgan Nkuekam Michael J Wingfield Caroline Mohammed Angus J Carnegie Geoff S Pegg Jolanda Roux |
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| Institution: | (1) Department of Microbiology and Plant Pathology, DST/NRF Centre of Excellence in Tree Health Biotechnology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Private Bag X20 Hatfield, Pretoria, 0038, Pretoria, South Africa;(2) School of Agricultural Science, University of Tasmania, GPO Box 252-54, Hobart, TAS, 7001, Australia;(3) Forest Science Centre, NSW Department of Primary Industries, PO Box 100, Beecroft, NSW, 2119, Australia;(4) Agric-Science Queensland, Ecosciences Precinct, 41 Boggo Road, Dutton Park, QLD, 4102, Australia; |
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| Abstract: | The genus Ceratocystis includes important fungal pathogens of trees, including Eucalyptus spp. Ironically, very little is known regarding the diversity or biology of Ceratocystis species on Eucalyptus species in Australia, where most of these trees are native. The aim of this study was to survey for Ceratocystis spp., and their possible insect associates, on eucalypts in Australia and thus to establish a foundation of knowledge regarding
these fungi on the continent. Collections were made in three states of Australia from wounds on trees, as well as from nitidulid
beetles associated with these wounds. Ceratocystis spp. were identified based on morphology and multigene sequence comparisons. Of the 54 isolates obtained, two previously
unknown species of Ceratocystis were found and these are described here as Ceratocystis corymbiicola sp. nov. and Ceratocystis tyalla sp. nov. Furthermore, the distribution of Ceratocystis pirilliformis is expanded to include Eucalyptus spp. in Tasmania. |
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