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Search for "THAXTERIA": 10 articles found in Index.

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.

KREJZOVÁ R. (1971): Submerse Kultivation der insektenpathogenen Pilzarten Entomophthora traxteriana (Petch) Hall et Bell und Entomophthora destruens Weiser et Batko.  Česká Mykologie 25(2): 118-124   (published: 1971)
  abstract   The fungi Entomophthora thaxteriana (Petch) Hall et Bell and Entomophthora destruens Weiser et Batko were cultivated in amino acid-rich liquid media. Yield of vegetative mass and resting spores was measured under varying pH and compared with E. virulenta. Morphological and physiological growth patterns of these Entomophthora species in submerged culture are described. Historical taxonomy and previous misidentifications of E. thaxteriana are discussed.

SUBRAMANIAN C.V. (1994): Veramyces, a new hyphomycete genus from Kumaon Himalayas.   [Thaxteria phaeostroma, Oedemium state, Veramyces elegans India]  Czech Mycology 47(1): 3-5   (published: 6th January, 1994)
  abstract   This paper describes the phialidic synanamorph of the Oedemium state of Thaxteria phaeostroma from a collection made on dead twigs from Kilbury, Naini Tal, U.P. in the Kumaon Himalayas. The phialidic form is accommodated in a new genus, Veramyces as a new species, V. elegans.

KREJZOVÁ R. (1988): Seasonal dynamics of the formation and discharge of Entomophthora conidia in vitro.  Česká Mykologie 42(2): 105-113   (published: 10th May, 1988)
  abstract   The formation and discharge of conidia during the whole vegetation season was observed in cultures of two isolates of Conidiobolus thromboides Drechsler and one isolate of Entomophthora destruens Batko et Weiser. Individual species and often even isolates markedly differ from one another in the number of discharged conidia and in the general course of conidiation. The optimum period for conidiation was from the beginning of the season till the end of September.

KREJZOVÁ R. (1988): The formation and discharge of conidia in cultures of entomophthorus fungi.  Česká Mykologie 42(1): 31-40   (published: 10th February, 1988)
  abstract   The formation and discharge of conidia from twenty isolates of five species of entomophthorous fungi (Conidiobolus thromboides, Entomophthora destruens, Entomophthora pyriformis, Erynia neoaphidis and Zoophthora radicans) were studied with regard to their cultivation period in vitro. With the exception of E. pyriformis, isolates with both markedly high and very low numbers of discharged conidia occurred in all species. The capacity of conidium production and discharge was not very significantly dependent upon the in vitro cultivation period of the isolate. The course of conidium formation was characteristic for individual species and often markedly differed from the others.

KREJZOVÁ R. (1974): List of species and strains of the genus Entomophthora cultivated in the collection of theInstitute of Entomology, Czechoslovak Academy of Sciences, Prague.  Česká Mykologie 28(3): 189-190   (published: 1974)

KREJZOVÁ R. (1973): The resistance of cultures and dried resting spores of three species of the genus Entomophthora to ajatin and the viability of their resting spores after long-term storage in the refrigerator.  Česká Mykologie 27(2): 107-111   (published: 1973)
  abstract   Light with an intensity of 1000 to 5000 lux inhibits the release of zoospores and the formation of zoosporangia of hop downy mildew (Peronoplasmopara humuli Miy. et Tak.). Zoosporangia release zoospores in water suspension both in light and darkness already after one hour. With increasing light intensity, however, the percentage of zoosporangia releasing zoospores decreases: after 6 hours 95% release zoospores in darkness and 72–84% in light. Light affects more sharply the onset of zoosporangia formation and the density of the mildew coating. In darkness the first zoosporangia form after 4 hours and a continuous dense coating after 12 hours. In light, depending on intensity, the first individual fruiting bodies and zoosporangia form after 6–22 hours, and their number remains nearly unchanged even after 30 hours of exposure. The inhibitory effect of light is only temporary, as the pathogen resumes forming dense, infective zoosporangia after 10–20 hours back in darkness under optimal conditions.

FRAGNER P., HEJZLAR J. (1973): „Graphiosis“- eine neue Erkrankung des Menschen?  Česká Mykologie 27(2): 98-106   (published: 1973)
  abstract   Part of the resting spores of E. virulenta, E. thaxteriana, and E. destruens germinate still after 72 hours of treatment with concentrated ajatin. A culture 14 days old may furnish a viable inoculum after being submerged in concentrated ajatin for 96 hours. The resting spores of all three species are at optimum state in a 14 days old culture, or during the first two months, stored at dry state in the refrigerator (7–15 °C).

SAMŠIŇÁKOVÁ A., MIŠÍKOVÁ S. (1973): Enzyme activities in certain entomophagous representative of Deuteromycetes (Moniliales) in relationships to their virulence.  Česká Mykologie 27(1): 55-60   (published: 1973)
  abstract   Extracellular secretion of chitinase, lipase, and protease was demonstrated in eleven species and strains of entomophagous fungi of the group Deuteromycetes (Moniliales). The enzymatic activity of the strains was compared with their virulence against larvae of Galleria mellonella. A correlation between enzyme production and pathogenicity was observed.

KREJZOVÁ R. (1971): Resistance and germinability of resting spores of some species of the Entomophthora.  Česká Mykologie 25(4): 231-238   (published: 1971)
  abstract   Resting spores of Entomophthora thaxteriana germinated after 5 years in cold storage; spores of E. virulenta and E. destruens germinated after 2 years. Spores resisted high temperatures (up to 100°C) for limited times and still retained viability. They remained viable after 18 months at –30°C.

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