Lecture 1 Flashcards
What is the study of fungi?
Mycology
Stramenopila
Oomycetes, water molds, not classified as fungi but similar
Three types of oomycetes
Oomycota
Hyphochytridiomycota
Labyrinthulomycota
Four types of slime molds
Myxomycota
Plasmodiophoromycota
Dictyosteliomycota
Acrasiomycota
Six types of true fungi
Chytridiomycota Zygomycota Glomeromycota Ascomycota Basidiomycota Mitosporic fungi
Eukaryotic
Nucleus and cytoplasmic organelles are membrane-bound
Thallus
Body structure composed of hyphae
Mycelium
Branched hyphae forming a feeding network
Three Nuclear states of hyphae
Monokaryotic (1 nucleus)
Dikaryotic (2 nuclei)
Coenocytic (mutinucleate, no septa)
Vegetative mycelium is usually haploid (n) or dikaryotic (n+n)
Fungi usually n, oomycetes usually n+n
What is chitin
Fungal cell walls, polysaccharide of N-acetyl-D-glucosamine
How to fungi acquire food?
Heterotrophic absorption (exude extra cellular enzymes that breakdown complex organic polymers)
Fungal habitat preferences
10-50 deg C
pH 3-10
Dark, moist with OM
Chytridiomycota
Phylum of fungi, zoosporic, produce zoospores (meiosporic)
Zygomycota
Saprophytic fungi, ectomycorrhizal fungi, produce zygospores (meiosporic)
Glomeromycota
Arbuscular mycorrhizal fungi, produce asexual spores