GLIOCLADIUM VIRENS PDF

Genera: Nectria, Hypocrea, Nectriopsis telemorphs of Gliocladium Description and Natural Habitats Gliocladium is a mitosporic filamentous fungus which is widely distributed in soil and decaying vegetation [ , ]. It is commonly considered as a contaminant. The older obselete names for this genus are Acrostalagmus, Isaria, and Verticillium. The telemorphs of the genus Gliocladium are included in the genera Nectria, Hypocrea, and Nectriopsis [ ]. Species The genus Gliocladium contains several species. The most commonly known ones are Gliocladium penicilloides, Gliocladium virens, and Gliocladium roseum, and Gliocladium deliquescens.

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Genera: Nectria, Hypocrea, Nectriopsis telemorphs of Gliocladium Description and Natural Habitats Gliocladium is a mitosporic filamentous fungus which is widely distributed in soil and decaying vegetation [ , ]. It is commonly considered as a contaminant. The older obselete names for this genus are Acrostalagmus, Isaria, and Verticillium. The telemorphs of the genus Gliocladium are included in the genera Nectria, Hypocrea, and Nectriopsis [ ].

Species The genus Gliocladium contains several species. The most commonly known ones are Gliocladium penicilloides, Gliocladium virens, and Gliocladium roseum, and Gliocladium deliquescens. Synonyms See the summary of telemorph-anamorph relations for the Gliocladium spp.

Pathogenicity and Clinical Significance Gliocladium has not been reported as the causative agent of any disease in man or animals.

Gliotoxin is a metabolite of Gliocladium deliquescens [ ]. The significance of detection of gliotoxin is yet to be determined. Macroscopic Features Gliocladium spp. The growth covers the whole surface of the plate in about a week.

From the front, the colonies are white to cream initially and may become pink to rose or dark green as they mature.

The reverse is colorless, white, or yellowish [ , ]. Microscopic Features Gliocladium produces hyphae, conidiophores, phialides, and conidia. Hyphae are septate and hyaline. Conidiophores are erect and branch repeatedly at their apices. The terminal branches give rise to flask-shaped phialides. Conidia are one-celled, ovoid to cylindrical, accumulating in a single, terminal, large ball, or occasionally in a loose column.

A penicillus bearing a single, large, slimy ball of one-celled conidia is typical of the genus Gliocladium.

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Gliocladium Species

The end-use product EP is for use in the control of damping-off diseases, particularly those caused by Pythium and Rhizoctonia, of greenhouse ornamental and food crops. The studies were performed using rats. All studies were classified as acceptable. The review of these studies indicates that the biofungicide is not toxic to, infective in, or pathogenic to rats by oral or pulmonary routes of exposure and not infective or pathogenic to rats by intravenous injection. Mycelium of the fungus was used for the injections and was found to be acutely toxic and lethal to test animals due to mechanical clogging of capillaries, however, these mortalities were not considered to be relevant in this case since injection is not a normal route of exposure and the product consists of chlamydospores rather than mycelium. Acute dermal toxicity testing was not required for this biofungicide based on the facts that the end-use product consists of large pellets, the label will require that gloves be worn when handling the product and application will be by soil incorporation.

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