Australasian Plant Pathology

, Volume 37, Issue 4, pp 406–416 | Cite as

Pesotum australi sp. nov. and Ophiostoma quercus associated with Acacia mearnsii trees in Australia and Uganda, respectively

  • G. Kamgan Nkuekam
  • K. Jacobs
  • Z. W. de Beer
  • M. J. Wingfield
  • J. Roux


Pesotum accommodates synnematal anamorphs of Ophiostoma spp. with sympodially proliferating conidiogenous cells. These fungi are usually closely associated with wounds on trees and the insects that visit them. During tree disease surveys in Uganda, as well as studies of fungi infecting wounds on Acacia mearnsii trees in Uganda and Australia, many isolates resembling species of Pesotum were collected. The aim of this study was to identify these fungi using both morphological and DNA sequence comparisons. The Pesotum, anamorph of O. quercus was the only species collected from multiple collections in Uganda. Collections from Australia represent a new species of Pesotum described here as P. australi sp. nov.

Additional keywords

forestry hardwood ophiostomatoid sapstain 


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Copyright information

© Australasian Plant Pathology Society 2008

Authors and Affiliations

  • G. Kamgan Nkuekam
    • 1
  • K. Jacobs
    • 2
  • Z. W. de Beer
    • 1
  • M. J. Wingfield
    • 1
  • J. Roux
    • 1
  1. 1.Department of Microbiology and Plant Pathology, Forestry and Agricultural Biotechnology Institute (FABI)University of PretoriaPretoriaAfrica
  2. 2.Department of MicrobiologyUniversity of StellenboschStellenboschSouth Africa

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