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Search for "CERCOSPORA": 23 articles found in Index.

KUMAR S., SINGH R. (2015): Pseudocercospora bischofigena, a new cercosporoid fungus from northeastern Uttar Pradesh, India.   [fungal diversity, foliicolous anamorphic fungi, morphotaxonomy, new species]  Czech Mycology 67(1): 39-44   (published: 10th April, 2015)
  abstract   Pseudocercospora bischofigena sp. nov., collected on living leaves of Bischofia javanica (Phyllanthaceae) in northeastern Uttar Pradesh, India, is described, illustrated and compared with P. bischofiae, the only other species of Pseudocercospora on this host. The new species is distinguished from the latter by its shorter conidiophores and conidia and well-developed stromata.

BRILLOVÁ D., SLADKÁ O. (1989): Transmission of virus-like particles from the infected into the healthy strains of Cercospora beticola Sacc.  Česká Mykologie 43(3): 155-165   (published: 21st August, 1989)
  abstract   The paper deals with the ultrastructure of the conidia of powdery mildew (Erysiphe graminis f. sp. hordei Marchal) using the freeze-etching technique. Cross fractures through whole conidia exposed the cell wall and faces of the plasma membrane bearing invaginations. In addition, structural details of the conidium internal organization were recognized. The nuclear membrane showed numerous pores scattered over the nuclear surface. Numerous mitochondria, small vesicles and glycogen accumulated along the conidium periphery. The results obtained with Erysiphe graminis conidia prove the advantages of the freeze-etching method over the conventional fixation procedures for fungal conidia.

BRILLOVÁ D., SLADKÁ O., PETERKOVÁ I. (1988): Respiration of the wild strain and the mutants of Cercospora beticola Sacc.  Česká Mykologie 42(2): 97-104   (published: 10th May, 1988)
  abstract   Light non-pathogenic mutants of Cercospora beticola exhibit a markedly increased respiration compared to pathogenic dark-grey wild strains as well as to non-pathogenic mutants having a light air mycelium and dark substrate. The increased respiration rate of light non-pathogenic mutants is discussed with respect to increased potassium content in their mycelium and donor-acceptor properties of quinones in the respiration process. A viral infection is analyzed in the group of wild strains.

BRILLOVÁ D. (1987): Intra-specific variability of Cercospora beticola Sacc.  Česká Mykologie 41(1): 37-45   (published: 16th February, 1987)
  abstract   In some laboratories there occur errors in the microscopic evaluation of smears. These errors consist in interpreting formations which are not yeasts as such. As many as half the results can be false positives. The authors demonstrate that proper technique and attention can greatly reduce such misidentifications. A detailed description of fungal elements in smears is provided.

ONDŘEJ M. (1984): Funde von parasitischen imperfekten Pilzen Cercospora Fres. Aus der Tschechoslowakei (Teil III.).  Česká Mykologie 38(4): 230-234   (published: 1984)
  abstract   The fungi Gliocladium roseum, Trichothecium roseum, Trichoderma harzianum, Trichoderma viride, Penicillium cyclopium and Acremoniella atra were isolated from onion bulbs infected with parasitic fungi Botrytis allii, Botrytis cinerea, Botrytis squamosa, Sclerotium cepivorum and Fusarium oxysporum. Some of them exhibited antagonistic effects on the pathogens causing storage rots under in vitro and in vivo conditions.

BRILLOVÁ D., ŠUŤÁKOVÁ G. (1984): Viruslike particles in hyphae of parasitic fungus Cercospora beticola Sacc.  Česká Mykologie 38(4): 193-196   (published: 15th November, 1984)
  abstract   In the present paper we summarize the results of electron microscope investigation of the hyphae of three singlespore isolates of Cercospora beticola and a sterile mutant. In ultrathin sections of hyphal cells we have found two types of viruslike particles of spherical shape, 30—35 and 50—55 nm in diameter. They were dispersed in the cytoplasm and occasionally in the vacuoles as well. Viruslike particles of both types occurred together in the hyphal cells of the strain Mss2, whereas the hyphal cells of strain PR13 contained viruslike particles only one dimension, i.e. there were cells containing 30—35 nm and others 50—55 nm viruslike particles. In the infected cells we observed changes of mitochondria, the occurrence of lamellar structures, changes of cell walls leading to the disruption and liberation of viruslike particles from the cells. The sporulation of infected strains was considerably lower than in healthy one.

ABDEL-HAFEZ S.I.I., ABO-ELYOUSR K.A.M., ABDEL-RAHIM I.R. (2015): Leaf surface and endophytic fungi associated with onion leaves and their antagonistic activity against Alternaria porri.   [phyllosphere, phylloplane, endophytes, purple blotch disease, antagonism]  Czech Mycology 67(1): 1-22   (published: 10th April, 2015)
  abstract   Sixty-eight fungal species belonging to 29 genera were isolated as leaf surface and endophytic fungi from healthy and purple blotch diseased onion leaves. The fungal populations associated with diseased onion leaves (1.360 × 103 CFU/g leaf in the phyllosphere, 2.614 CFU/leaf segment in the phylloplane and 1.324 CFU/leaf segment in the surface-sterilised diseased leaves) were higher than those in healthy samples (0.804 × 103 CFU in the phyllosphere, 1.184 CFU in the phylloplane, and 0.35 CFU as endophytes). Endophytic fungi of healthy leaves were represented by 12 genera and 15 species, while fungi of surface-sterilised diseased leaves included 17 species from 13 genera. The mycobiota associated with surface-sterilised diseased leaves were different from the endophytic fungi of healthy samples, whereas the disease may stimulate colonisation of opportunistic fungi causing secondary infections such as Botrytis cinerea, Penicillium aurantiogriseum, Alternaria alternata and Cladosporium spp. In contrast, healthy leaves were a source of antagonistic endophytic fungi such as Trichoderma harzianum and T. koningii. Testing the antagonistic effect of 91 fungal isolates against Alternaria porri showed that nine isolates of Trichoderma produced the highest suppressive potential (73.1%) depending on competition and mycoparasitism. Epicoccum nigrum and Penicillium oxalicum exhibited antibiosis against A. porri producing a 12 mm broad inhibition zone. In conclusion, the quantitative and qualitative compositions of fungi associated with onion leaves were distinctly influenced by A. porri infection. Mycobiota associated with asymptomatic onion leaves such as Epicoccum nigrum, Penicillium oxalicum and Trichoderma harzianum are a natural source of eco-friendly bioagents. They showed an effective antagonistic potential against A. porri, and may thus be applied as an alternative to fungicides.

Book review - Harveson R.M., Hanson L.E., Hein G.L. (eds.): Compendium of beet diseases and pests. Second Edition.  Czech Mycology 61(2): 186   (published: 10th August, 2010)

SINGH S.K., SINGH P.N., MISHRA P. (2008): New species of Passalora (cercosporoid hyphomycete) from Western Ghats, India.   [anamorphic fungi, biodiversity, taxonomy, India]  Czech Mycology 60(2): 243-249   (published: 27th February, 2009)
  abstract   The present paper describes two new species of Passalora, namely P. macarangae collected on Macaranga peltata (Euphorbiaceae), and P. peltophori on Peltophorum pterocarpum (Fabaceae).Both treated hyphomycetous taxa were collected in the forests of Western Ghats, India.

ANTONÍN V., VÁGNER A. (2000): Type specimens of fungi preserved in the Herbarium of the Moravian Museum in Brno, Czech Republic (BRNM).   [type specimens, herbarium, Moravian museum, Brno]  Czech Mycology 52(1): 51-68   (published: 21st January, 2000)
  abstract   A list of type specimens of fungi preserved in the herbarium of the Moravian Museum in Brno, Czech Republic containing 351 items is published.

ONDŘEJ M. (1996): Seven little known species of the genus Alternaria.   [Alternaria spp., A. caricina spec. nov., Czech Republic, taxonomy]  Czech Mycology 49(2): 119-127   (published: 13th October, 1996)
  abstract   The occurrence of seven little known Alternaria species (Fungi Imperfecti, Hyphomycetes, Dematiaciace) collected in the years 1969 to 1994 in the Czech Republic is reported and their morphological characteristics presented. They cover two species described by the author, A. calendulae (Ondřej 1974) and A. thalictrina (Ondřej 1974), a new combination: A. anthyllidis (Baudyš) Ondřej comb. nov. and three hitherto unknown species to the Czech Republic: (A. helianthinficiens Simmons, A. leucanthemi Nelen, and A. infectoria Simmons). A new species A. caricina Ondřej spec. nov., is described from leaves of Carex brizoides L. Additional taxonomical characters (size of conidial scars) are given for each species.

JANITOR A., VIZÁROVÁ G. (1994): Production of abscisic acid and cytokinins in static liquid culture by Schizophyllum commune.   [production abscisic acid, cytokinins, static liquid culture, Schizophyllum com­mune Fr.]  Czech Mycology 47(4): 293-302   (published: 16th February, 1995)
  abstract   The superficialcultivation of fungus Schizophyllum commune Fr. in static liquid cultures showed production of abscisic acid - type inhibitor (ABA) and isopentyl - adenine type cytokinins (2iP) by this fungus. The analyses were done after 28 days of cultivation.

LIZOŇ P. (1993): Fungi described by Carl Kalchbrenner.  Česká Mykologie 46(3-4): 315-327   (published: 25th August, 1993)

POSPÍŠIL J., OTČENÁŠEK M., POSTUPA J., VEJBORA O., ŠTEINER I. (1989): Trichosporon capitatum as a little known opportunistic mycotic agent in man.  Česká Mykologie 43(3): 149-154   (published: 21st August, 1989)
  abstract   Transmission of virus-like particles from the infected hypovirulent strain of Cercospora beticola into virulent healthy strains was observed. The joint cultivation of the light poorly sporulating hypovirulent strain C61 containing virus-like particles and dsRNK with dark virulent intensively sporulating C26, C34 and C42 strains without virus-like particles and dsRNA resulted in the rich anastomosis connection between coloured thicker hyphae of virulent strains and thinner hyaline hyphae of the hypovirulent strain. Transmission of virus-like particles and dsRNA via anastomosis from the hypovirulent strain into virulent ones has been proved biochemically by the UV spectra and polyacrylamide gel electrophoresis. Besides, the originally healthy virulent strains have converted and gained the properties of the hypovirulent strain thus demonstrating not only the transfer of virus agent but also its infectivity.

URBAN Z. (1987): Die tschechoslowakische Mykologie 1981-1985.  Česká Mykologie 41(3): 162-171   (published: 10th August, 1987)

HOLUBOVÁ-JECHOVÁ V. (1987): Studies on Hyphomycetes from Cuba V. Six new species of dematiaceous Hyphomycetes from Havana Province.  Česká Mykologie 41(1): 29-36   (published: 16th February, 1987)
  abstract   Six variants of Cercospora beticola were isolated from the territory of Slovakia. According to the cultural properties on potato glucose agar medium they could be characterized as: dark grey, dark grayish-green, ash-grey, deep grayish-green, light grayish-green and white grayish-green. Inoculation of susceptible and resistant sugar beet cultivars showed a correlation between pigmentation intensity and aggressiveness, with darker variants being more virulent and sporulating more heavily.

OTČENÁŠEK M., DVOŘÁK J. (1985): Fungi infecting man. Taxonomy of agents of human mycoses in an alphabetical survey.  Česká Mykologie 39(3): 155-164   (published: 1985)
  abstract   An orientational survey of taxonomy of fungi which have been described as agents of human mycoses is given. An alphabetical list of 163 agents contains data on synonyms of the individual species and organs afflicted by them. The literature citation of the earliest paper calling attention to pathogenicity is provided. Current nomenclature of anamorph and teleomorph stages and their mutual relation is discussed.

Abstracts of papers delivered at the 6th Conference of Czechoslovak mycologists held at Pezinok, 19.-23. September 1977.  Česká Mykologie 32(2): 99-122   (published: 1978)
  abstract   Tradice mezinárodních mykologických kongresů není stará. První byl v roce 1971 v anglickém Exeteru. K vrcholným vědeckým setkáním tohoto typu nelze přiřazovat již delší dobu pořádané Sjezdy evropských mykologů. Druhý mezinárodní mykologický kongres se konal ve dnech 27. VIII. až 3. IX. 1977 v prostorách University of South Florida v Tampě. Zúčastnilo se ho více než 1200 specialistů ze 43 zemí.

ONDŘEJ M. (1974): Mykofloristische Notizen I. Centrospora Neerg.  Česká Mykologie 28(3): 185-188   (published: 1974)
  abstract   The fungi of the genus Entomophthora are mostly obligate parasites in nature. Due to their high demand for organic nitrogen, they are difficult to isolate and especially to maintain in permanent culture compared to other entomopathogenic fungi. In the Prague collection, the best results were obtained using coagulated yolk medium (Müller-Kogler 1959), or media enriched with casamino acid compounds (Krejzová 1970).

MORAVEC Z. (1960): The Mohelno serpentine steppe.  Česká Mykologie 14(2): 101-108   (published: 20th April, 1960)

ŠEBEK S. (1956): Poznámky k houbovým chorobám pěstovaných léčivých a aromatických rostlin I.  Česká Mykologie 10(4): 237-242   (published: 5th December, 1956)

CEJP K. (1952): Ruská a sovětská mykologie II.  Česká Mykologie 6(6-7): 81-84   (published: 15th August, 1952)

FRÁGNER P. (1949): O proměnách plísně Aspergillus chevalieri var. intermedius.  Česká Mykologie 3(1-2): 11-13   (published: 15th February, 1949)

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