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CERCOSPORA|beticola":
9 articles found in Index.
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.
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.
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)
URBAN Z. (1987): Die tschechoslowakische Mykologie 1981-1985. Česká Mykologie 41(3): 162-171 (published: 10th August, 1987)
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.
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.
CEJP K. (1952): Ruská a sovětská mykologie II. Česká Mykologie 6(6-7): 81-84 (published: 15th August, 1952)
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