Mycology Flashcards
Baker’s yeast
Sacchromyces cerevisiae
Antler hyphae
Trichophyton schoenleinii
Ability to exist in two forms
Dimorphic
Sexual spore formed within an ascus following meiosis
Ascospore
Fruiting structure that contains asci
Ascocarp
Single-cel fungus that reproduces by budding or by fission
Yeast
Sac-like structure that contain ascospores, characteristic of Ascomycetes
Ascus
Sexual spore formed produced as an outgrowth of basidium
Basidiospore
Sexual reproduction requiring the interaction of two different thalli
Heterothallic
Structure that contains basidiospores
Basidium
Hyphae produced above the surface of the agar media
Aerial mycelium
Thick-walled resting or survival structure (aka Chlamydoconidia)
Chlamydospore
Specialized Hyphal structure that carries the conidia
Conidiophores
Enclosed ascocarp, composed of layers of hyphae that contain randomly dispersed asci
Cleistothecium
Conidium derived from the fragmentation of specialized Hyphae
Arthroconidium
displaying two morphologic types, one environmental (mould) and one in vivo (yeast)
Dimorphic
Smooth, referring to colonial morphology
Glabrous
Asexual reproductive structure formed in any manner that does not involve cleavage
Conidium
Blastomyces, Coccidiodes, Histoplasma, Paracoccidiodes, Sporothrix, and Penicilliumare example of what type of fungi?
Dimorphic
Exophiala spp, is example of?
Polymorphic fungi
Rapidly growing organisms found in soil
Zygomycota e.g Mucor, Rhizopus, Absidia
Causative agent of Tinea versicolor, characterized by discoloration or depigmentation and scaling of the skin
Malasseza furfur
Hair fragments are floated on a sterile water supplemented with a few drops of 10% yeast extract
Hair perforation test
Media for yeast ID
Cornmeal agar
A term used for the absence of reproductive structure
Mycelia sterilia
Most common primary culture media
Sabouraud Dextrose agar
Positive result for germ tube test
Germ tube formation
Two organisms positive in germ tube test
Candida albicans. Candida dubliniensis
Secondary branches that support the phialides
Metulae
Horizontal hypha that connects one mycelium to another
Stolon
Positive result of woods lamp
Fluorescent
Specimen used to diagnose fungal meningitis
CSF
Causative agent of fungal meningitis
Cryptococcus neoformans
Used to demonstrate the capsule
India ink
Penetrating agent
Dimethyl sulfoxide
Most common mounting medium
Lactophenol cotton blue
Color of C. albicans, C. tropicallis, C. parapsilosis, C. glabrata/krusei in CHROMagar
Green, metallic blue, white, pink
Binds to the polysaccharide present in chitin
Calcofluor white
asexual spore produced within a sporangium
Sporangiospores
Funnel-shaped structure that carries the conidia
Collarette
Substance detected in birdseed agar
Melanin
Enzyme present in niger seed agar
Phenol oxidase
Organism who has the ability to reduce nitrate
Cryptococcus neoformans
Positive result of Rice media
Microsporum auduinii - discoloration of rice
Microsporum canis - woolly appearance or production in the rice
Positive result in Christensen Urea agar
Trichophyton mentagrophytes - [+] pink
Trichophyton rubrum - [-] yellow
Whole fungus; the anamorphic plus the teleomorphic state of the fungus
Holomorph
Asexual spore formed by budding of the yeast cell
Blastoconidia
Sexual reproduction can take place within one thallus
Homothallic
Colorless or transparent
Hyaline
vegetative unit of a mould
Hypha
Slender outgrowth of a cell bearing conidia
Sterigmata
Enclosed ascocarp with a pore at the top through which the ascospores are discharged
Perithecium
Cell wall content of fungi
Chitin
Asexual form of fungal sporulation (imperfect state)
Anamorph
Borne within a Hypha
Intercalary
Vegetative growth of a fungus; includes an interwoven mass of Hyphae
Thallus
Larger of two types of conidia produced by a mould
Macroconidium
Smaller of two types of conidia produced by a mould
Microconidium
Mass of Hyphae that make up the thallus of a mould
Mycelium
Cell with opening trough which conidia are produced
Phialides
Hyphae produced on the surface or extending into the agar media
Vegetative mycelium
Connected yeast cells (Blastoconidia) that resemble a Hypha but contain areas of constriction between adjacentcells
Pseudohyphae
Multi-cellular clump of cells that does not produce any spores or conidia
Scleotium
Cross-wall in a Hypha
Septum
Sexual form of Fungal sporulation (perfect state)
Teleomorph
Borne at the end of a Hypha
Terminal
Source of the first antifungal drugs
Streptomyces noursei
First anti fungal drugs
Nystatin
Reverse dimorphism
Malassazia furfur
Colors of aspergillus colonies is best studied in what agar
Czapek dox agar
fungi that grow at a high temperature
Thermophilic
An extension of the sporangiophore into the base of the sporangium
Columella
Stalk bearing the sporangium
Sporangiophores
Clearing agents
KOH
Sac-like structure in which the asexual sporangiospores develop
Sporangium
cell that produce conidia
Conidiogenous cell
Primary anti fungal drugs that targets almost all fungi
Amphotericin B
Source of amphotericin B
Streptomyces nodosus
First antibiotic against fungi
Nystatin
Source of nystatin
Streptomyces noursei
Converts largosterol to ergosterol
Azzoles
Prevents oxidation of squalene epoxidase
Allylamines
Administer together with amphotericin B
Flucytosine
Inhibit glycan synthesis
Caspofungin
Inhibit chitin synthesis
Nikkomycin
pigmented in dark color
Demetiaceous