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Leptographium longiclavatum sp. nov., a new species associated with the mountain pine beetle, Dendroctonus ponderosae

Published online by Cambridge University Press:  22 September 2005

Sangwon LEE ,
Jae-Jin KIM  and
Colette BREUIL
Sangwon LEE
Affiliation:
Department of Wood Science, University of British Columbia, Vancouver, B.C. V6T 1Z4, Canada. E-mail: [email protected]
Jae-Jin KIM
Affiliation:
Department of Wood Science, University of British Columbia, Vancouver, B.C. V6T 1Z4, Canada. E-mail: [email protected]
Colette BREUIL
Affiliation:
Department of Wood Science, University of British Columbia, Vancouver, B.C. V6T 1Z4, Canada. E-mail: [email protected]
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Abstract

The mountain pine beetle, Dendroctonus ponderosae, and its fungal associates are devastating the lodgepole pine forests in British Columbia, Canada. During our fungal survey, an unknown Leptographium species has been consistently isolated from both D. ponderosae and infested lodgepole pine (Pinus contorta var. latifolia). This Leptographium species has similar morphology with the Leptographium anamorph of Ophiostoma clavigerum whose association with the D. ponderosae is well known. However, thorough morphological comparisons showed that this fungus is distinct from all the other Leptographium species described in the literature, and especially from O. clavigerum. Comparison of DNA sequences of multiple loci and the profiles by the PCR-RFLP marker also confirmed that this Leptographium species represents an undescribed taxon. Based on its distinct morphological, physiological characteristics and phylogenetic position, we describe it as L. longiclavatum sp. nov.

Type
Research Article
Information
Mycological Research , Volume 109 , Issue 10 , October 2005 , pp. 1162 - 1170
Copyright
© The British Mycological Society 2005

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