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Ceratocystis atrox sp. nov. associated with Phoracantha acanthocera infestations on Eucalyptus grandis in Australia

van Wyk, M. and Pegg, G. and Lawson, S.A. and Wingfield, M.J. (2007) Ceratocystis atrox sp. nov. associated with Phoracantha acanthocera infestations on Eucalyptus grandis in Australia. Australasian Plant Pathology, 36 (5). pp. 407-417.

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Article Link(s): http://dx.doi.org/10.1071/AP07042

Publisher URL: http://www.publish.csiro.au/

Abstract

Ceratocystis spp. include important pathogens of trees as well as apparently saprophytic species. Four species have been recorded on Eucalyptus grandis in Australia, of which only one, C. pirilliformis Barnes and M.J. Wingf., is known to be pathogenic. A recent survey of pests and diseases of Eucalyptus trees in northern Queensland revealed a species of Ceratocystis associated with the tunnels made by the aggressive wood-boring insect Phoracantha acanthocera (Macleay) (Cerambicydae: Coleoptera). The aim of the present study was to identify the fungus based on morphological characteristics and comparisons of DNA sequence data for three gene regions. The fungus peripherally resembles C. fimbriata Ell. and Halst. but differs from this species most obviously by having much darker mycelium, longer ascomatal necks, segmented hyphae and an absence of aleuroconidia. Comparisons of combined sequence data confirmed that the Ceratocystis sp. from P. acanthocera represents an undescribed taxon, which is provided with the name Ceratocystis atrox sp. nov. C. atrox appears to have a close relationship with P. acanthocera, although its role in the biology of the insect is unknown and its pathogenicity has not been considered.

Item Type:Article
Corporate Creators:Horticulture and Forestry Science
Business groups:Horticulture and Forestry Science
Additional Information:© Australasian Plant Pathology Society.
Keywords:Bark beetles; Coleoptera : Scolytinae; sap stain.
Subjects:Science > Botany > Cryptogams
Plant pests and diseases > Individual or types of plants or trees
Science > Botany
Deposited On:26 Jan 2009 23:28
Last Modified:08 Sep 2011 06:16

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