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Ophiostoma kryptum sp. nov. from Larix decidua and Picea abies in Europe, similar to O. minus

Published online by Cambridge University Press:  16 October 2003

Karin JACOBS  and
Thomas KIRISITS
Karin JACOBS
Affiliation:
Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, Ottawa, Ontario K1A 0C6, Canada. E-mail: karin.jacobs@fabi.up.ac.za Present address: Forestry and Agricultural Biotechnology Institute (FABI), Department of Genetics, University of Pretoria, Pretoria, 0002, South Africa.
Thomas KIRISITS
Affiliation:
Institute of Forest Entomology, Forest Pathology and Forest Protection (IFFF), Universität für Bodenkultur Wien (BOKU), Hasenauerstrasse 38, A-1190 Vienna, Austria.
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Abstract

An unknown species of Ophiostoma was isolated from European larch (Larix decidua) infested by Tetropium gabrieli (Coleoptera: Cerambycidae) and Norway spruce (Picea abies) infested by Tetropium sp. in Austria. The fungus is similar to O. minus, but distinguished from it by the ecology, colony morphologies on OA and MEA, and phylogenetic analysis of aligned DNA sequences of the ITS region of the rDNA operon and the partial β-tubulin gene. It is described here as O. kryptum sp. nov. The new species readily produces perithecia with short necks and reniform ascospores, and has Hyalorhinocladiella and Leptographium-like anamorphs. Circumstantial evidence suggests that Tetropium spp. act as vectors of O. kryptum. O. minus and O. kryptum represent additional examples of morphologically similar, yet genetically and ecologically distinct species in the genus Ophiostoma. The new combination, O. crenulatum comb. nov. (syn. Ceratocystiopsis crenulata), is also made.

Type
Research Article
Information
Mycological Research , Volume 107 , Issue 10 , October 2003 , pp. 1231 - 1242
Copyright
© The British Mycological Society 2003

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