Category Archives: Volume 53(1-2) 2013

Saccardoëlla kanderana (Ascomycota), a species and genus new to Finland

Authors: Mathiassen, Geir & Rämä, Teppo & Granmo, Alfred
Journal: Karstenia, Volume 53 (2013), Issue 1-2, pages 1-4.
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Key words: Ascomycota, ecology, Finland, genera incertae sedis, Saccardoëlla kanderana, Sordariomycetes, taxonomy

This is the first report of the genus Saccardoëlla and species Saccardoëlla kanderana from Finland. The pyrenomycetous species S. kanderana was found on two Salix species in three localities in the northwest of the country, in the biogeographical province of Enontekiön Lappi in 1996 and 2002. Three Norwegian finds of the species are also reported, one of them representing the hitherto northernmost locality in the word. An overwiev of the genus is given and the host preference and distribution of the species are briefly discussed.

Dianema corticatum new to Finland and contributions to the knowledge of Myxomycetes in the Åland Islands, SW Finland

Authors: Kunttu, Panu & Varis, Elina & Rivasto, Sanna-Mari
Journal: Karstenia, Volume 53 (2013), Issue 1-2, pages 5-8.
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Key words: biogeography, Dianema corticatum, Myxomycetes, Åland Islands

Abstract: In this paper we present Dianema corticatum as new to Finland and the second record of Hemitrichia abietina in Finland. Altogether we present 16 species of Myxomycetes new to the Aland Islands.

Collections of Hygrocybe subsect. Squamulosae from N. Finland, N. Norway, Arctic Canada and Arctic Russia (Polar Urals)

Authors: Borgen, Torbjørn & Ohenoja, Esteri
Journal: Karstenia, Volume 53 (2013), Issue 1-2, pages 9-28.
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Key words: Hygrocybe, Basidiomycetes, taxonomy, Arctic, montane, arctic-alpine mycology

Abstract: About 80 collections of Hygrocybe, subsect. Squamulosae, collected in the Arctic and montane areas in N. Europe, Canada and Siberia were studied macro- and microscopically, based on personal collections and herbarium material. Seven species are recognized, viz. Hygrocybe miniata, H. rubrolamellata, H. calciphila, H. turunda, H. cantharellus, H. biminiata, H. substrangulata s.l., incl. H. substrangulata forma and H. substrangulata var. rhodophylla. Hygrocybe rubrolamellata is new to Europe, and Hygrocybe substrangulata var. rhodophylla is new to N. Europe. The taxonomic features of H. substrangulata s.l., H. substrangulata var. rhodophylla and H. biminiata are discussed.

Notes on the genus Lactarius from the Rocky Mountain alpine zone in regard to Finnish arcticalpine species

Authors: Cripps, Cathy & Barge, Ed
Journal: Karstenia, Volume 53 (2013), Issue 1-2, pages 29-37.
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Key words: ectomycorrhizal, North America, Rocky Mountains, Russulales, Salix, arctic-alpine mycology

Abstract: Lactarius is an important ectomycorrhizal genus (Basidiomycota, Russulales) and a subset of species occur in arctic and alpine habitats. These species are well known in Europe, Greenland, Svalbard and Scandinavia; however there is scant information from the Rocky Mountain alpine zone in North America. Here we report five Lactarius species from above 3000 m at latitude 45° N in the northern Rockies and above 3700 m at latitude 36° – 38° N in the southern Rockies. Lactarius lanceolatus, L. nanus, L. salicis-reticulatae and L. repraesentaneus are reported with Salix species and L. glyciosmus with Betula glandulosa. All have been recorded from Finland at 68 0–70 0 N at much lower elevations (300-1000 m) in the alpine, subarctic and subtemperate zones.

Ectomycorrhizal fungi associated with Arctostaphylos usva-ursi in Scotland: Exploring the biogeography of undiscovered fungal communites

Authors: Hesling, Emily & Taylor, Andy
Journal: Karstenia, Volume 53 (2013), Issue 1-2, pages 39-47.
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Key words: ectomycorrhizal, Arcostaphylos uva-ursi, alpine, low-alpine, inoculum, afforestation, Scotland, arctic-alpine mycology

Abstract: In the Scottish alpine environment there is a suite of ecologically significant plant species that are obligately associated with ectomycorrhizal (ECM) fungi. These plant species are in decline, and at present little is known abouth the potentially diverse communities of mycorrhizal fungi associated with them. This study sets out to provide a baseline description of the ECM community associated with Arctostaphylos usva-ursi over seven sub-albine/albine sites in the Scottish highlands. Traditional identification and Sanger sequencing of collected fruit bodies, coupled with next-generation sequencing of host plant root material were used to detect and identify ECM taxa. The ECM community was diverse, with 84 taxa identified to genus level. Only 29 of these are species previously recorded in Scotland. Eight species represent new records for Scotland and the remaining 47 taxa have not yet been identified to species level and are likely to include many currently undescribed species. 39% of species belonged to the genus Cortinarius, whilst Sebacina, Inocybe, Tomentella, Leccinum and Russula were also well represented. Community composition was similar to arctic-alpine ECM communities described elsewhere, but is unique within Scotland. The community was particularly dominated by Suillus variegatus, a species considered to be a specialist associate of Pinus spp. Almost one-fifth of species detected were ‘specialist’ associated of tree species, highlighting the potential capability of A. uva-ursi ECM communities to faciliate upland woodland regeneration in Scotland. This research should draw awareness to a highly diverse, but poorly recorded community, restricted to a rapidly declinging habitat in Scotland.

Environments influence the psychrophily of fungi and oomycetes in the cryosphere

Authors: Hoshino, Tamotsu & Matsumoto, Naoyuki
Journal: Karstenia, Volume 53 (2013), Issue 1-2, pages 49-54.
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Key words: cryosphere, psychrophile, psychrophily, life cycle, Sclerotinia nivalis, snow molds, Typhula, arctic-alpine mycology

Abstract: Cryophilic fungi are defind by the physiological characteristics of their different life stages. Abiotic and biotic environmental factors influence physiological characteristics of cryophilic fungi and oomycetes. The relationship between fungal psychrophily and their habitat is discussed.

Ultrastructure of cyst-like fungal bodies in myxomycete fruiting bodies

Authors: Yajima, Yuka & Shigeki, Inaba & Degawa, Yosuke & Hoshino, Tamotsu & Kondo, Norio
Journal: Karstenia, Volume 53 (2013), Issue 1-2, pages 55-65.
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Key words: Nivicolous Lamproderma, plasmodial slime molds, Rozella, SEM, Stemonitaceae, TEM, arctic-alpine mycology

Abstract: This is the first report on ultrastructural observations of nivicolous myxomycete fruiting bodies with cyst-like bodies. One specimen had immature fruiting bodies of a Lamproderma sp. just after spore cleavage.  Using light microscopy and scanning and transmission electron microscopy, countless cyst-like bodies were observed inside of the developing spores, capilitum, columella and stalk. A second specimen consisted of mature fruiting bodies of L. echinosporum. Outward appearance of the fruiting bodies was normal with numerous cyst-like bodies inside the entire fruiting body. The cyst-like bodies n both myxomycete specimens have a common morphology: 5-6 µm in diam, being transparent under light microscopy and densely warted by SEM and TEM observation. The partial sequence of the 188 rDNA gene of the first specimen suggested that cyst-like bodies were in the Cryptomycota (including Rozellida), placed at the root of a fungal body.