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Ceratocystis pirilliformis, a new species from Eucalyptus nitens in Australia

Ceratocystis pirilliformis, a new species from Eucalyptus nitens in Australia,I. Barnes,B. D. Wingfield,M. J. Dudzinski,M. J. Wingfield

Ceratocystis pirilliformis, a new species from Eucalyptus nitens in Australia   (Citations: 15)
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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 dis- eases in Uganda, Congo and Brazil. This study was undertaken to collect Ceratocystis species, including C. eucalypti, from artificially induced wounds on Eu- calyptus nitens near Canberra in southeastern Austra- lia. 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. Compar- ison 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.
Published in 2003.
Cumulative Annual
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