Mycologia (2003) 95, 865-871

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I. Barnes, J. Roux, B.D. Wingfield, M.J. Dudzinski, K.M. Old and M.J. Wingfield (2003)
Ceratocystis pirilliformis, a new species from Eucalyptus nitens in Australia
Mycologia 95 (5), 865-871
Abstract: Several species of Ceratocystis have been recorded on Eucalyptus. These include C. fimbriata, C. eucalypti, C. moniliformis and C. moniliformopsis. Of these, only C. fimbriata is known as a pathogen; it recently has been found causing serious wilt diseases in Uganda, Congo and Brazil. This study was undertaken to collect Ceratocystis species, including C. eucalypti, from artificially induced wounds on Eucalyptus nitens near Canberra in southeastern Australia. Trees were wounded in October 2000, and wounds were examined approximately one month later. Ascomata characteristic of a Ceratocystis species were found covering the wounds, and this fungus also was isolated from the wood using carrot baiting. This species of Ceratocystis has hat-shaped ascospores similar to those of C. fimbriata, but it differs from C. fimbriata and all other species of Ceratocystis in that it possesses ascomata with a pyriform base. Comparison of DNA sequences from the ITS and 5.8S rRNA operon confirmed that the fungus from E. nitens in Australia is unique, and we describe it here as a new species, C. pirilliformis.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Irene Barnes, Brenda D. Wingfield, Michael J. Wingfield, Jolanda Roux

Research topic(s) for pests/diseases/weeds:
identification/taxonomy


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Ceratocystis fimbriata Eucalypt (Eucalyptus) Congo-Democratic Republic
Ceratocystis fimbriata Eucalypt (Eucalyptus) Uganda
Ceratocystis pirilliformis Eucalypt (Eucalyptus) Australia (South+SE)