Search results (Index filtered)
Search for "
ENTOMOPHTHORA|destruens":
7 articles found in Index.
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. (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.
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. (1975): Morphology and taxonomy of the species Conidiobolus coronatus (Constantin) Srinivasan et Thirumalachar (1964). Česká Mykologie 29(3): 174-178 (published: 1975)
abstract
Conidiobolus coronatus was isolated as an airborne contaminant in a newly built house in Prague. This species is known both as a saprophyte and a pathogen of insects and mammals, including humans. The isolate was studied morphologically and cultured on various media. Its significance for hygiene is discussed.
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.
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.
Back to "
ENTOMOPHTHORA|destruens" (Index view)
-----------------
job done in 0.0356 sec.
