Terminologies Flashcards
mycelium, hyphal units above the colony agar interface
Aerial –
a fungus (dermatophyte) that preferentially grows on man rather than other animals or the soil.
Anthropophilic –
conidia produced by annelide
Annelloconidium -
non motile sporangiospores
Aplanospores -
a thallic conidium released by either the splitting of a double septum or by the fragmentation or lysis of a dysjunctor cell. pl. arthroconidia
Arthroconidium –
a fruiting body containing asci and ascospores
Ascocarp –
a group of fungi that reproduce sexually by the endogenous formation of ascospores in an ascus.
Ascomycetes –
a haploid spore produced within an ascus following karyogamy and meiosis
Ascospore –
a sac-like cell containing ascospores. Asci are characteristic of Ascomycetes. Pl. asci
Ascus –
lacking septa often pertaining to the hyphae seen in zygomycetes
Aseptate –
a cell that gives rise to a basidiospore. Basidia are characteristic of the Basidiomyc etes
Basidium –
a group of fungi that reproduce sexually by the exogenous formation of basidiospores from a basidium
Basidiomycetes –
a haploid spore produced on a basidium following karyogamy and meiosis
Basidiospore –
a chain of conidia having the youngest cell at the tip
Blastocatenate –
an asexual conidium that forms by a blowing out or budding process. Pl. blastoconidia
Blastoconidium –
junction of a bud and the mother cell of a yeast
Base –
a type of asexual reproduction commonly found in yeasts
Bud –
conidia arranged in chains
Catenulate –
hyaline mucopolysaccharide covering around the body of certain yeasts
(Cryptococcus, Rhodotorula)
Capsule –
club-shaped
Clavate –
an enclosed ascocarp containing randomly dispersed asci. Pl. cleistothecia
Cleistothecium –
a remnant of a cell wall present at the tip of a phialide, or around a sporangiophore
Collarette –
a sterile dome-like structure at the tip of a sporangiophore or within a sporangium.
Columella –
thick-walled resistant resting spore, esp in Histoplasma capsulatum
Chlamydospore –
without septa
Coenocytic –
a sterile invagination of a sporangium (Zygomycetes)
Columella –
cell that gives rise to a conidium
Conidiogenous cell –
reproductive propagule produced in the absence of nuclear recombination, representing anamorphic or asexual reproduction
Conidium –
specialized hypha that gives rise to, or bears a conidium
Conidiophore–
infection of hair, skin and nails caused by fungi other than dermatophytes
Dermatophyte –
fungus having brown or black melanotic pigment in the cell wall
Dematiaceous –
type of branching of hyphae that is repetitious without pattern, branches are approximately equal in size and the stem from which they originated
Dichotomous –
having two forms
Dimorphic –
an artificial subdivision to accommodate those fungi where only the asexual state is known
Deuteromycetes –
a type of hyphal branching into two equal forks
Dichotomous –
a slow growing variant
Dysgonic –
covered with delicate spines
Echinulate –
spore formed within a spherule by cleavage of cytoplasm
Endospore -
forming a sheath of arthroconidia on the outside of a hair shaft. Cuticle of the hair is destroyed.
Ectothrix –
arthroconidia formed inside a hair shaft. Cuticle of the hair remains intact
Endothrix –
fluffy or cottony
Floccose –
reproductive structures of fungi (spores)
Fruiting body –
presence of fungi in the blood
Fungemia –
initial hypha from a sprouting conidia, spore or yeast
Germ tube –
a fungus that requires mating between two compatible strains for sexual reproduction to occur
Heterothallic –
a scar at the base of a conidium
Hilum –
a mode of blastic conidium ontogeny in which all the cell wall layers of the conidiogenous cell are involved in conidium development
Holoblastic –
amode of thallic conidium ontogeny in which all the cell wall layers of the conidiogenous cell are involved in conidium development
Holothallic –
a fungus capable of sexual reproduction on a single thallus
Homothallic –
colourless
Hyaline/Hyalo –
a single/vegetative filament of a fungus. Pl. Hyphae
Hypha –
formed within a hyphal unit
Intercalary –
the larger of two different types of conidia produced by a fungus in the same manner
Macroconidium –
smaller of two types of conidia produced in the same manner by the same fungus
Microconidium –
mass of hyphae making up a fungus colony
Mycelium –
a sterile cell below the phialides of some Aspergillus and Penicillium species. Pl. Metulae
Metula –
black
Niger –
without septa
Nonseptate –
like the teeth of a comb
Pectinate –
darkly pigmented
Phaeo –
fragile string of cells that result from the budding of blastoconidia that have remained attached to each other
Pseudohypha –
a film-like or skin-like surface growth
Pellicle –
the brush-like conidiophore of Penicillium. Pl. Penicilli
Penicillus –
conidium born from phialide
Phialoconidia -
a specialized conidiogenous cell that produces conidia in basipetal succession without increasing in length
Phialide –
holoblastic conidium produced through pores in the cell wall of the conidiogenous cell or conidiophore
Poroconidium -
having more than one form
Pleomorphic –
a string of elongated blastoconidia formed in some yeasts that resemble a hypha-like filament
Pseudohyphae -
pear-shaped
Pyriform –
a hypha composed of a number of cells swollen at one end resembling a tennis racquet
Racquet hyphae –
root like structure. Used in the ID of some Zygomycetes
Rhizoid –
a cross wall in a hypha. Pl. septa
Septum –
covered in small spines
Spinulose/Spinose –
specialized hypha that gives rise to a sporangium
Sporangiophore –
an asexual spore produced within a sporangium; reproductive unit formed in a sporangium
Sporangiospore –
a sac-like structure producing asexual spores endogenously by cytoplasmic cleavage.
Sporangium –
star-shaped
Stellate –
a reproductive propagule formed by either meiosis or mitosis. However, if by asexual means, cleavage of cytoplasm is usually involved.
Spore –
a small pointed structure upon which a basiospore forms. Pl. sterigmata
Sterigma –
a running hypha from which rhizoids and sporangiospores arise
Stolon –
a cross wall
Septum –
sexual state of a fungus
Teleomorph –
formed at the end of a structure
Terminal –
spines or finger-like projections on macroconidia (Histoplasma capsulatum); wart like structures
Tuberculate –
a mode of conidial ontogeny where a conidium is formed from a pre-existing hyphal segment or cell
Thallic –
having swellings at intervals
Toruloid –
phialides arising directly from a vesicle as in Aspergillus
Uniserate –
having many warts
Verrucose –
swollen or bladder-like cell
Vesicle –
unicellular fungus, usually round or ovoid, that reproduces by budding
Yeast –
infecting lower animals rather than man
Zoophilic –
a thick-walled sexual spore formed by the fusion of two similar gametangia; characteristic of the Zygomycetes
Zygospores –