Persoonia (2010) 25, 72-93

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R. Linnakoski, Z.W. de Beer, J. Ahtiainen, E. Sidorov, P. Niemelä, A. Pappinen and M.J. Wingfield (2010)
Ophiostoma spp. associated with pine- and spruce-infesting bark beetles in Finland and Russia
Persoonia 25, 72-93
Abstract: The timber and pulp industries of Finland rely heavily on importations from Russia as source of raw timber. These imports raise the risk of accidentally importing forest pests and pathogens, especially bark beetles and their associated fungi, into Finland. Although ophiostomatoid fungi have previously been reported from Finland and Russia, the risks of accidentally moving these fungi has prompted a first survey to compare the diversity of conifer-infesting bark beetles and associated fungi from boreal forests on both sides of the Finnish-Russian border. The aim of the present study was to identify and characterise Ophiostoma species isolated in association with 11 bark beetle species infesting Pinus sylvestris and Picea abies during this survey in the eastern parts of Finland and neighbouring Russia. Fungal isolates were grouped based on morphology and representatives of each morphological group were subjected to DNA sequence comparisons of the internal transcribed spaced region (ITS1, 5.8S, ITS2) and β-tubulin gene region. A total of 15 species of Ophiostoma were identified, including seven known species, five new species, and three species for which the identity remains uncertain. In the O. piceae-complex we identified O. canum, O. floccosum, O. karelicum and O. rachisporum sp. nov., and related to these, some isolates belonging to the European clade of O. minus in the O. minus-complex. Ophiostoma bicolor and O. fuscum sp. nov. were identified in the O. ips -complex, while O. ainoae, O. brunneo-ciliatum, O. tapionis sp. nov. and O. pallidulum sp. nov. were shown to group close to, but not in a strict monophyletic lineage with species of the O. ips-complex. Together with a single O. abietinum-like isolate, the only species that grouped close to the Sporothrix schenckii- O. stenoceras complex, was O. saponiodorum sp. nov.
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Database assignments for author(s): Riikka Linnakoski, Michael J. Wingfield, Z. Wilhelm de Beer

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Hylurgops palliatus Spruce (Picea) Finland
Hylurgops palliatus Pine (Pinus) Russia (Eur.)
Ips typographus Spruce (Picea) Finland
Ips typographus Spruce (Picea) Russia (Eur.)
Pityogenes chalcographus Spruce (Picea) Finland
Pityogenes chalcographus Pine (Pinus) Russia (Eur.)
Trypodendron lineatum Pine (Pinus) Finland
Trypodendron lineatum Pine (Pinus) Russia (Eur.)
Hylastes brunneus Pine (Pinus) Finland
Hylastes brunneus Pine (Pinus) Russia (Eur.)
Tomicus piniperda Pine (Pinus) Finland
Tomicus piniperda Pine (Pinus) Russia (Eur.)
Ips sexdentatus Pine (Pinus) Finland
Ips sexdentatus Pine (Pinus) Russia (Eur.)
Tomicus minor Pine (Pinus) Finland
Tomicus minor Pine (Pinus) Russia (Eur.)
Dryocoetes autographus Pine (Pinus) Finland
Dryocoetes autographus Pine (Pinus) Russia (Eur.)
Ophiostoma rachisporum Pine (Pinus) Finland
Ophiostoma tapionis Spruce (Picea) Finland
Ophiostoma tapionis Pine (Pinus) Russia (Eur.)
Ophiostoma fuscum Spruce (Picea) Finland
Ophiostoma pallidulum Pine (Pinus) Finland
Ophiostoma saponiodorum Spruce (Picea) Finland