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12 Cards in this Set
- Front
- Back
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Fusarium |
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Aspergillus |
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Mucor |
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Rhizopus |
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Penicillium |
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Candida Albicans |
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conidiogenous cell in which the meristematic end remains unchanged as successive conidia are extruded |
Phialides |
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Grossly, on SDA at room temperature, colonies grow rapidly. They are fluffy to cottony and may appear in colors of pink, purple, yellow, green and other shades. Microscopically, the hyphae are small septate and give rise to phialides which produce either single-celled microconidia usually borne in gelatinous heads or large macroconidia which are sickle or boat shaped and contain numerous septate. |
Fusarium |
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Grossly, on SDA at room temperature, they grow rapidly (2-5days) and appear first as flat, flamentous growth which rapidly becomes blue-green and powdery with sulfur-yellow area scattered over the surfaceMicroscopically, they are characterized by branching septate hyphae, some of which terminally bear a conidiophore that expands into a large, inverted flask-shaped vesicle (sac) covered with small phialies that occur only in a single row and around the upper half of the vesicle. Long chains of small, spherical, rough-walled, green conidia from a columnar or radiate mass. |
Aspergillus |
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Grossly on SDA at room temperature, this fungus produces a rapidly growing colony that fills the test tube or plate with a white fluffy mycelium, becoming gray to brown with age Microscopically, the fungus is characterized by non-septate colorless mycelium without rhizoids. The sporangiophores arise singly from mycelia which may be simple or branched with sporangia or sac containing many spores arising from the apex of each branch. |
Mucor |
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Grossly on SDA at room temperature, growth is rapid producing at first while then becomes bluish-green and very powdery due to abundant spore production. Microscopically, the hyphae are hyaline and septate and produce bluish-like conidiophores. These exhibit branching-metulae from which phialides producing chains of conidia arise. |
Penicillium |
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Grossly on SDA, this fungus grows as creamy, medium-sized, and moist to dull colonies. Microscopically, they appear as small, oval or budding, yeast like cells, along with mycelia-like fragments of varying thickness and length. The yeast-positive like cells and pseudo-hyphal elements are strongly Gram-positive. They may also produce chlamydospores which appear as round, thick-walled, resting spores at the rounded and enlarged terminal cells of the hyphae. They may also show germ tubes, which appear as hypha-like extensions of yeast cells produced without a constriction at the point of origin from the cell |
Candida albicans |
