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

HOLUBOVÁ-JECHOVÁ V. (1987): Studies on Hyphomycetes from Cuba VI. New and rare species with tretic and phialidic conidiogenous cells.  Česká Mykologie 41(2): 107-114   (published: 8th May, 1987)
  abstract   Six new taxa of dematiaceous Hyphomycetes with tretic and phialidic conidiogenous cells are described from Cuba: Corynesporella helminthosporioides, Corynesporopsis isabelicae, Hemicorynespora aseptata, Dischloridium triseptatum, Helminthosporium dimorphosporum (all new species) and Chloridium phaeosporum var. cubense. Corynespora garciniae is recorded from Cuba for the first time. A new combination Dischloridium inaequiseptatum is proposed.

HOLUBOVÁ-JECHOVÁ V., MERCADO SIERRA A. (1986): Studies on Hyphomycetes from Cuba IV. Dematiaceous Hyphomycetes from the Province Pinar del Rio.  Česká Mykologie 40(3): 142-164   (published: 29th August, 1986)
  abstract   Seventy taxa of dematiaceous Hyphomycetes belonging to 44 genera were collected in the Province Pinar del Rio, in the western part of Cuba. An attention was mainly given to the saprophytic microfungi colonizing dead wood and bark of different broad-leaved trees, palms and decaying herbaceous material. Twenty-three hyphomycetes are recorded here for the first time from the Cuban territory, seven taxa of them are described and illustrated as new for science: Corynesporopsis rionensis Hol.-Jech., Monodictys sessilis Hol.-Jech., Pithomyces sumiderensis Hol.-Jech., Pseudospiropes cubensis Hol.-Jech., Sporidesmium dissolvens Hol.-Jech., Mercado et Mena, Virgariella caribensis Hol.-Jech., as new species and Sporidesmium tropicale M. B. Ellis var. cubensis Hol.-Jech. as a new variety. Codinaea lunulospora Hewings et Crane is transferred to Dictyochaeta and Sporidesmium pseudolmediae Castañeda to Corynespora. One typical lignicolous ascomycete Nitschkia acanthostroma (Mont.) Nannfeldt is also added.

HOLUBOVÁ-JECHOVÁ V., MERCADO SIERRA A. (1984): Studies on Hyphomycetes from Cuba II. Hyphomycetes from the Isla de la Juventud.  Česká Mykologie 38(2): 96-120   (published: 1984)
  abstract   Sixty-eight species or varieties of lignicolous and other saprophytic Hyphomycetes belonging to 47 genera are recorded from the Isla de la Juventud (formerly Isla de Pinos). The majority of them are probably common species in subtropic or tropic regions, however, previously unreported from Cuba or adjacent islands in Caribbean area. Some infrequent or rare Hyphomycetes were also collected and 11 new species are described here.

BABU S., NANDAKUMAR R., SRIRAM S., RAGUCHANDER T., BALASUBRAMANIAN P., SAMIYAPPAN R. (2003): Phytotoxin production and rice sheath blight development by Rhizoctonia solani mutants derived from gamma irradiation.   [gamma rays, mutants, phytotoxin, Rhizoctonia solani, rice, sheath blight]  Czech Mycology 55(3-4): 261-271   (published: 22nd December, 2003)
  abstract   To evaluate the role of the RS-toxin, a phytotoxin produced by the fungus Rhizoctonia solani that causes sheath blight disease of rice, varying doses of gamma irradiation were used to generate mutants of the fungus. All the mutants showed reduced mycelial growth compared to the wild isolate RS7 in liquid culture. The mutants exhibited significant differences in virulence on detached leaf sheath and intact rice plants, the toxin produced and sclerotial formation in culture media and infected leafsheaths. The amount of toxin produced was positively correlated with disease development. SDS-PAGE analysis of mycelial proteins showed that the mutants and wild isolate produced many proteins of different molecular weights at different stages of mycelial growth. In the mutants resulting from higherdoses of gamma rays, the amount of toxin produced and their ability to induce disease symptoms were also greatly reduced.

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.

RÉBLOVÁ M., GAMS W. (1999): Teleomorph-anamorph connections in Ascomycetes. 1. Cylindrotrichum and Cacumisporium anamorphs of Chaetosphaeria.   [Ascomycetes, Chaetosphaeria, culture studies, wood-inhabiting fungi, systematics]  Czech Mycology 51(1): 1-40   (published: 29th January, 1999)
  abstract   The teleomorph-anamorph connections of Chaetosphaeria are discussed. On the basis of there vision of the type and other herbarium material, Zignoëlla crustacea, Lasiosphaeria britzelmayri subsp. fennica, Sphaeria decastyla and Melanomma macrosporum proved to be members of Chaetosphaeria. The new combinations Chaetosphaeria crustacea, Chaet. fennica and Chaet. decastyla, are proposed, Melanomma macrosporum is included in the synonymy of the latter. Chaetosphaeria crustacea has an anamorph intermediate between Chloridium and Cylindrotrichum, Chaetosphaeriafennica has a Chloridium-like anamorph, and Chaetosphaeria decastyla has Cacumisporium capitulatum as its anamorph. Two new species, Chaetosphaeria tulasneorum associated with the anamorph Cylindrotrichum oligospermum and Chaetosphaeria acutata associated with a Cylindrotrichum anamorph, are described. The teleomorph-anamorph connections of all accepted Chaetosphaeria species, except for Chaet. fennica, were confirmed by culture studies. Chaetosphaeria abietis and Chaet. fusi for mis are also considered, and the connection with the Chloridium cylindrosporum anamorph of the latter is confirmed by culture studies for the first time. The genus Cylindrotrichum and its relationship to Chloridium and other related genera is discussed. A key to the species of Chaetosphaeria with Cylindrotrichum and Cacumisporium anamorphs is provided.

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.

SVRČEK M. (1992): On the genus Didonia Vel. (Helotiales).  Česká Mykologie 46(1-2): 41-49   (published: 1st April, 1993)
  abstract   The authentic material of all species of the discomycetous genus Didonia Vel. (1934) was examined and results are discussed.

KUBÁTOVÁ A. (1992): New records of micromycetes from Czechoslovakia. I.  Česká Mykologie 45(4): 155-163   (published: 21st May, 1992)
  abstract   Five micromycetes (Apiosordaria verruculosa, Exserohilum pedicellatum, Periconia circinata, Sporendocladia bactrospora and Staphylotrichum coccosporum) are reported from Czechoslovakia for the first time. They were isolated from soils, bark and leaves. Descriptions and illustrations are given.

FRAGNER P., MIŘEJOVSKÝ P. (1990): Key to histological identification of causative agents in systemic mycoses II.  Česká Mykologie 44(2): 65-76   (published: 22nd June, 1990)
  abstract   Based on authors’ experience and data from literature the key suggests identification of microscopical fungi according to morphology of mycotic elements found in histological sections from human and animal tissues. Part II: Concise information about species and varieties comprising remarks on occurrence and character of diseases in humans and animals, morphology of fungi in tissues and histopathological pictures.

ŘEPOVÁ A. (1989): Soil micromycetes from Czechoslovakia - a list of isolated species with bibliography. II.  Česká Mykologie 43(4): 235-243   (published: 17th November, 1989)
  abstract   A list of micromycetes (saprophytic, keratinophilic, rhizosphere, nematophagous, ovicidal, dermatophytes, and cellular slime moulds) isolated from various Czechoslovak soils is presented. The paper includes distribution data and literature citations for each species. It is the second installment of the series and documents a wide variety of fungi, including Chaetomium species and other frequently encountered genera.

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.

ONDŘEJ M. (1989): Key to the species of Drechslera Ito sensu lato on the territory of Czechoslovakia.  Česká Mykologie 43(1): 45-50   (published: 6th February, 1989)
  abstract   The key to Drechslera Ito sensu lato is arranged only for species found on the territory of Czechoslovakia. The individual species are distinguished on the basis of their conidium size and shape. The list of 20 species having been observed on the 34 host plants is included. The key includes anamorphs also assigned to Bipolaris and Exserohilum based on morphological and teleomorph distinctions. Practical methods for isolating and preparing diagnostic material from infected leaves are discussed.

ONDŘEJ M. (1988): New species of Drechslera Ito in Czechoslovakia.  Česká Mykologie 42(2): 84-89   (published: 10th May, 1988)
  abstract   Three new species of Drechslera Ito (Fungi imperfecti, Hyphomycetes, Dematiaceae) from Czechoslovakia are treated: D. triseti Ondřej, D. flavispora Ondřej and D. holci Ondřej. Historical taxonomic context, differentiation from similar species, and details on host plants are given.

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.

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.

ONDŘEJ M. (1984): The genus Deightoniella Hughes in Czechoslovakia.  Česká Mykologie 38(1): 39-45   (published: 1984)
  abstract   Three species of Deightoniella Hughes (Fungi imperfecti) from Czechoslovakia are treated in this paper: D. arundinacea (Corda) Hughes, D. caricina (Bresadola) Ondřej and new species D. alni Ondřej.

ONDŘEJ M. (1983): Zum Auftreten von Pilzen der Gattungen Drechslera Ito und Dendryphion Wallroth (Fungi imperfecti) auf dem Flachs in der Tschechoslowakei.  Česká Mykologie 37(2): 72-76   (published: 1983)
  abstract   In the years 1975–1980, the occurrence of three species of fungi of the genus Drechslera Ito and one species of Dendryphion Wallroth was found on flax plants (Linum usitatissimum L.) in Czechoslovakia. Two of the reported species had not previously been detected on flax in Czechoslovakia — Drechslera lini (Gentner) Ondřej and Dendryphion nanum (C. G. Nees) Hughes.

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.

NOVÁKOVÁ J. (1977): Wechselseitige Beziehungen zwischen den Virus- und Pilz- krankheiten bei Kulturpflanzen.  Česká Mykologie 31(2): 60-68   (published: 1977)
  abstract   The importance of mixed infections of cultivated plants by viruses and pathogenic fungi is analyzed both from theoretical and practical points of view. The course of root rots caused by pathogenic fungi in various virus-infected hosts is described as an example to demonstrate these relationships. The causes of the altered disease syndrome in the root system are discussed.

Summa actionum, quae in Quinto Consilio Mycologorum Cechoslovacorum in urbe Olomouc 25.-27.septembri 1973 traditae sunt.  Česká Mykologie 28(2): 104-126   (published: 1974)

HEJTMÁNEK M., LENHART K. (1970): Contribution to faviform variability and pathogenicity of dermatophytes.  Česká Mykologie 24(4): 192-197   (published: 29th October, 1970)
  abstract   The faviform UV-mutants of Microsporum cookei, Trichophyton ajelloi and Trichophyton mentagrophytes are described. Two of the eight faviform mutants of T. mentagrophytes were pathogenic for guinea pigs, the others were non-pathogenic. The changed morphology of faviform mutants derived from T. mentagrophytes was permanent even after recultivation from animal lesion. The authors classify faviform changes known up to now into three categories: 1. Faviform modifications (reversible reaction of culture on specific environmental factors). 2. Faviform mutations (irreversible changes of cultures). 3. Syndrome of faviform senescence (spontaneous change in old cultures of dermatophytes probably caused by mutation in cytoplasmic or nuclear determinant).

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