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Search for "HUBKA V.": 5 articles found.
KUBÁTOVÁ A., HUBKA V. (2021): Records of the rare and extremely osmophilic fungi Penicillium eremophilum and Xerochrysium dermatitidis on soy bars. [food-borne fungi, food spoilage, Eurotiomycetes, Eurotiales, Aspergillaceae, xerophiles.] Czech Mycology 73(2): 185-198 (published: 3rd November, 2021)
abstract
The strongly osmophilic and slowly growing fungi Penicillium eremophilum and Xerochrysium dermatitidis were found on soy protein bars. These fungi are worldwide rarely recorded and have been recorded in the Czech Republic for the first time. Penicillium eremophilum is exceptional in the genus Penicillium by the production of 2-spored asci and by the absence of a conidial state. Xerochrysium dermatitidis is predominantly known from food, but some affinity to clinical material has also been recorded. The identification of the strains was confirmed by DNA sequencing. Their macroscopic and microscopic descriptions with photographs completed with known literature data are given.
KUBÁTOVÁ A., HUBKA V. (2021): Triadelphia morgoensis, an enigmatic wood-associated hyphomycete: second record, updated description and molecular identification. [microfungi, Sordariomycetes, Triadelphiaceae, multigene phylogeny.] Czech Mycology 73(2): 173-184 (published: 3rd November, 2021)
abstract
Triadelphia (Ascomycota, Microascales) is a genus encompassing pleomorphic dematiaceous micromycetes occurring sporadically on rotting wood and other plant material, infrequently also on other substrates. In this study, we document a second record of Triadelphia morgoensis, found on a twig of Populus nigra near Prague (Czech Republic), after its original description from decaying wood in Hungary. This fungus is characterised by the production of three types of conidia. The identification was achieved by a combination of morphological, physiological and genetic traits. The description of the fungus is emended, and its differentiation from similar species is discussed. Multigene phylogeny showed that T. morgoensis is most closely related to T. loudetiae and T. heterospora. The DNA data from three loci generated in this study (ITS, LSU, RPB2) will facilitate identification of the species in the future. Our results add to the knowledge on the ecology and phylogeny of this understudied fungus, for which neither living type material nor a molecular sequence has been preserved.
NOVÁKOVÁ A., KUBÁTOVÁ A., SKLENÁŘ F., HUBKA V. (2018): Microscopic fungi on cadavers and skeletons from cave and mine environments [European caves, abandoned mines, dead bodies, bones, mammals, frogs, spiders, isopods, micromycetes] Czech Mycology 70(2): 101-121 (published: 19th August, 2018)
abstract
During long-term studies of microscopic fungi in 80 European caves and mine environments many cadavers and skeletons of animals inhabiting these environments and various animal visitors were found, some of them with visible microfungal growth. Direct isolation, the dilution plate method and various types of isolation media were used. The resulting spectrum of isolated fungi is presented and compared with records about their previous isolation. Compared to former studies focused mainly on bat mycobiota, this paper contributes to a wider knowledge of fungal assemblages colonising various animal bodies in underground environments.The most interesting findings include ascocarps of Acaulium caviariforme found abundant on mammals cadavers, while Botryosporium longibrachiatum isolated from frogs, Chaetocladium jonesiae from bats and Penicillium vulpinum from spiders represent the first records of these species from cadavers or skeletons.
NOVÁKOVÁ A., KUBÁTOVÁ A., VALINOVÁ Š., HUBKA V., KOLAŘÍK M. (2015): Trichoderma fassatiae, a new species from the section Pachybasium isolated from soil in the Czech Republic. [Ascomycota, Hypocreales, Trichoderma, morphology, DNA sequence data] Czech Mycology 67(2): 227-231 (published: 30th October, 2015)
abstract
Trichoderma fassatiae sp. nov. isolated from forest soil in the Czech Republic is described based on phenotype and DNA sequence data (ITS rDNA, RPB2, and TEF1α). It belongs to the Semiorbis clade in the section Pachybasium. Characters distinguishing it from similar species are provided.
STUCHLÍK D., MENCL K., HUBKA V., SKOŘEPOVÁ M. (2011): Fungal melanonychia caused by Onychocola canadensis: first records of nail infections due to Onychocola in the Czech Republic. [onychomycosis, Arachnomyces nodosetosus, fungal infection, elderly people, soil fungi] Czech Mycology 63(1): 83-91 (published: 10th August, 2011)
abstract
Onychocola canadensis is a non-dermatophyte filamentous fungus with an unusual ecology. Hitherto, O. canadensis has been isolated only from human nails and skin, although attempts to isolate it from the environment have been unsuccessful. We describe two new cases of onychomycosis caused by O. canadensis with dissimilar clinical appearance. The first infection manifested itself as distal and lateral onycholysis with conspicuous black pigmentation. As far as we know, this is the first description of O. canadensis onychomycosis in the Czech Republic. In connection with this case, the authors emphasise the importance of mycological laboratory examination of dark nail lesions. Based on photodocumentation, a second case of onychomycosis due to O. canadensis was identified retrospectively.This case manifested itself as distal and lateral subungual onychomycosis with yellow discoloration, which is more typical of O. canadensis onychomycosis. Morphological characteristics important for discrimination of O. canadensis from other medically important fungi are discussed.
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