Lesson 15 Flashcards
eukaryotic, non-photosynthetic heterotrophs which produce
exoenzymes and obtain nutrients by absorption
fungi
moulds; 2 to 10 μm in diameter
branching hyphae
3 to 5 μm in diameter
unicellular yeasts
2 major forms
branching hyphae, unicellular yeasts
pathogens that cause ringworm in animals and humans
dermatophytes
used for the form of a fungal species during its sexually reproductive life cycle
teleomorph
term used for the form of a fungal species during its asexual
form, usually associated
anamorph
fungi that lack a meiotic stage
mitosporic fungi
Fungi of veterinary importance are found in these 3 phylum
Ascomycota, basidiomycota, zygomycota
obligatory associations with other
microorganisms and are non-pathogenic
mutualistic fungi
cause sporadic opportunistic infections in animals
saprophytic fungi
pathogens, causing ringworm
in animals
parasitic dermatophytes
impart rigidity and osmotic stability, lined with two layers of cell
membrane composed of sterol
cell wall
mainly composed of carbohydrate components including chitin macromolecules with cellulose cross-linkages
hyphal cell wall
contain protein complexed with polysaccharides and a range of lipid compounds
yeast cell wall
cross walls
septa
develop in a sac-like structure called an ascus
ascopores
Produced by members of Basidiomycota on club- shaped structures called basidia
basidiospores
develop in a thick- walled zygosporangium, formed from the fusion of side projections of
two compatible hyphae
zygospores
pathogenetic mechanisms by which fungi produce disease
- tissue invasion (mycosis)
- toxin production (mycotoxicosis)
- induction of hypersensitivity
lesion in epidermis, other keratinized structures and mucous membranes
superficial mycoses
Fungal diseases by tissue invasion can be categorized according to sites of
lesions
- superficial mycoses
- subcutaneous mycoses
- systemic mycoses