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Ophiostoma setosum, a common sapwood staining fungus from western North America, a new species of the Ophiostoma piceae complex

Published online by Cambridge University Press:  01 April 2000

Adnan UZUNOVIC ,
Keith A. SEIFERT ,
Seong Hwan KIM  and
Colette BREUIL
Adnan UZUNOVIC
Affiliation:
Department of Wood Science, The University of British Columbia, Vancouver, B.C. V6T 1Z4, Canada Present address: Forintek Canada, Corp., Western Laboratory, 2665 East Mall, Vancouver, B.C. V6T 1W5, Canada.
Keith A. SEIFERT
Affiliation:
Eastern Cereal and Oilseed Research Centre, Agriculture & Agri-Food Canada, Ottawa, Ontario K1A 0C6, Canada
Seong Hwan KIM
Affiliation:
Department of Wood Science, The University of British Columbia, Vancouver, B.C. V6T 1Z4, Canada
Colette BREUIL
Affiliation:
Department of Wood Science, The University of British Columbia, Vancouver, B.C. V6T 1Z4, Canada
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Abstract

Ophiostoma setosum is described as a new species commonly associated with exposed sapwood of Tsuga heterophylla in western North America. It is characterized by the production of a typical ophiostomatoid teleomorph, a Pesotum anamorph with conspicuous, dark seta-like hyphae on the synnema stipes and apices, and a Sporothrix mycelial anamorph with solitary or short-catenate conidia. Mating experiments demonstrate that the species has two mating types controlled by two alleles at a single locus and is reproductively isolated from similar biological species of the O. piceae complex. Phylogenetic analysis of DNA sequences from the ITS2 and 5′ end of the large nuclear subunit (26S) of the ribosomal DNA supports the close relationship of O. setosum and O. piceae.

Type
Research Article
Information
Mycological Research , Volume 104 , Issue 4 , April 2000 , pp. 486 - 494
Copyright
© The British Mycological Society 2000

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