Journal
ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY
Volume 102, Issue 2, Pages 375-399Publisher
SPRINGER
DOI: 10.1007/s10482-012-9747-6
Keywords
Bark beetle-associated fungi; Ophiostomatales; Ophiostomatoid fungi; Symbiosis
Categories
Funding
- Graduate School in Forest Sciences (GSForest)
- Emil Aaltonen Foundation
- Kone Foundation
- Finnish Forest Industries Federation, Finnish Forest Research Institute (Metla)
- Finnish Food Safety Authority (Evira)
- North Karelia University of Applied Sciences, Finland
- St. Petersburg State Forest Technical University, Russia
- Tree Protection Co-operative Programme (TPCP)
- THRIP initiative of the Department of Trade and Industry, South Africa
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Species of Grosmannia with Leptographium anamorphs include important forest pathogens and agents of blue stain in timber. They are commonly found in association with forest pests, such as bark beetles. During a survey of ophiostomatoid fungi in eastern parts of Finland and neighboring Russia, species belonging to the genus Grosmannia were isolated from 12 different bark beetle species infesting Picea abies and Pinus sylvestris, the most economically important conifers in the region. Identification of these fungi was based on morphology, DNA sequence comparisons for three gene regions and phylogenetic analyses. A total of ten taxa were identified. These belonged to six different species complexes in Grosmannia. The phylogenetic analyses provided an opportunity to redefine the G. galeiformis-, L. procerum-, L. lundbergii-, G. piceiperda-, G. olivacea- and G. penicillata-complexes, and to consider the species emerging from the survey within the context of these complexes. The species included G. galeiformis, G. olivacea, L. chlamydatum, L. lundbergii, L. truncatum and a novel taxon, described here as L. taigense sp. nov. In addition, species closely related to G. cucullata, G. olivaceapini comb. nov., G. piceiperda and L. procerum were isolated but their identity could not be resolved. The overall results indicate that the diversity of Grosmannia species in the boreal forests remains poorly understood and that further studies are needed to clarify the status of several species or species complexes.
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