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SCLEROCONIDIOMA":
4 articles found in Index.
KOUKOL O. (2009): Geographical distribution of Scleroconidioma sphagnicola in coniferous forests in Europe and Canada. [Ascomycota, Larix decidua, Pinus spp., Picea spp., litter needles] Czech Mycology 61(1): 117-124 (published: 29th September, 2009)
abstract
The distribution of the dematiaceous microfungus Scleroconidioma sphagnicola in coniferous litter in Europe and Canada was assessed using a culture-dependent approach. Needles of various coniferous species were sampled between May and November of 2008. Twenty needles from each sample were cultivated on 2° malt agar after surface sterilisation with 30 % hydrogen peroxide. The formed mycelia were identified based on their morphology. The identifications were further confirmed by analyses of ITS rDNA. S. sphagnicola was recorded at 8 of the 53 sites. The highest abundance of S. sphagnicola was recorded in mountain areas of the Czech Republic. Further records of S. sphagnicola were acquired from the literature and the GenBank database. S. sphagnicola does not seem to be a ubiquitous coloniser of coniferous litter. However, this study showed that this fungus is found in various regions and the data obtained may serve to make an evaluation of the potential spread of S. sphagnicola.
KOUKOL O., KOVÁŘOVÁ M. (2007): Autecology of Scleroconidioma sphagnicola particularly in Šumava National Park (Czech Republic). [Scleroconidioma sphagnicola, Dothideales, microsclerotia, coniferous litter, Sphagnum] Czech Mycology 59(1): 111-123 (published: 28th June, 2007)
abstract
The anamorphic fungal species Scleroconidioma sphagnicola was repeatedly isolated from spruce and pine litter needles in Šumava National Park. The morphology of thirteen strains of this fungal species was compared; oxidative enzymes and possible parasitism on Sphagnum in vitro were tested. Our results showed that all of the strains differed from the original description in only one characteristic – microsclerotia lacked conidiogenous cells on their surface. All strains produced laccase and peroxidase, eleven strains produced polyphenol oxidases. Inoculation of Sphagnum species resulted in only negligible colonisation. We suppose that Scleroconidioma sphagnicola in the studied area does not parasite on Sphagnum. This conclusion is supported by the fact that strains of Scleroconidioma sphagnicola were isolated from needles lying among Sphagnum, but no diseased plants were found.Results of our previous experiments with Scleroconidioma sphagnicola dealing with decomposition of spruce litter needles and competition with other fungal species are summarised.
KOUKOL O., MAGDALINOU E., PÁNKOVÁ H., BOROVIČKA J., MÜNZBERGOVÁ Z. (2022): Do microclimatic conditions in two forest types on serpentine bedrock affect culturable microfungi in pine litter needles? [fungal diversity, ITS rDNA, temperature and humidity, Pinus sylvestris.] Czech Mycology 74(2): 181-194 (published: 24th November, 2022)
abstract
Microfungi colonising coniferous needles in litter were intensively studied in previous decades, but forest stands on serpentine soils have been overlooked. Also, the effects of microclimatic conditions on fungal communities in coniferous litter are unknown. In our study, we aimed to characterise communities of culturable microfungi colonising pine litter needles collected from two types of Scots pine forest growing on serpentine bedrock, i.e. dense forest with relatively stable microclimatic conditions and open-canopy forest on exposed rock with highly variable conditions. The composition of their fungal communities was analysed in respect to microclimatic conditions at the collection sites. Using a combination of phenotypic and molecular data (sequences of ITS rDNA), 35 taxa were distinguished in 1078 fungal colonies recorded, out of which 25 were identified to the species level. Fungal communities were most affected by needle type (litter vs. fermentation layer) followed by maximum temperature during the previous five months. Interestingly, a higher number and abundance of species were recorded at the warmer site, in the open-canopy forest. Dominant fungi recorded in this study (Desmazierella acicola, Phacidium lacerum and Scleroconidioma sphagnicola) were mostly identical to those recorded in previous studies and the occurrence of less abundant taxa previously not recorded in pine litter suggests that the uppermost litter layer represents an important reservoir of fungal diversity.
KOUKOL O. (2011): Early spring mycobiota of pine litter needles. [fungal diversity, fungal communities, microfungi, Pinus sylvestris] Czech Mycology 63(2): 153-161 (published: 10th August, 2011)
abstract
Rise in air temperature accompanied by snow-melting in early spring may affect fungi colonising litter needles. This study dealt with the diversity of communities of culturable microfungi colonising Scots pine litter at localities still covered by snow and after snowmelt. Surface-sterilised needles were cultivated on malt agar under two temperature regimes (8/9 and 15/16 °C) and outgrowing fungi were isolated into pure cultures and identified based on morphology and analysis of ITS and partial 28S rDNA regions. Thirty-one fungal species were isolated in total. Dominant colonisers with a colonisation frequency of over 10 % included Verticicladium trifidum, Ceuthospora pinastri, Sympodiella acicola and an unidentified member of Helotiales. Two basidiomycetes, Marasmius androsaceus and Mycena galopus, were also isolated relatively frequently from needles with snow cover, but under different temperature regimes. This preference for different temperatures reflects different niches that these species occupy in coniferous litter. Species richness was significantly higher on needles cultivated at lower temperatures. Widespread use of room temperature for cultivation of samples even from cold seasons may underestimate fungal diversity.
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