Fungi Flashcards
Learn vocabulary and concepts associated with fungi
Saprobes
Decomposers that break down dead organiz matter and are essential for nutrient cycling
Mycelium
Main fungal body composed of hyphae
Hyphae
One thick cell that extends
Molds
Refer to several groups of fungi that grow as hyphae and rapidly asexually reproduce
Microsporidia
Intracellular parasites of many animals
Mitomes
Serve as mitochondria in microsporidia
Chytrids
Only group of fungi that retain swimming spores with flagellum
(Global amphibian decline)
Zygomycota
Aseptate fungi with no divisions and free nuclei
(EX: Bread mold)
Giomeromycota
Form arbuscular mycorrhizae with plants
Hyphae penetrate plant cells Nutrient adv to plant
Dikarya
Most common fungi
Mushroom fruiting bodies
Dikaryotic life cycle
Absorptive Heterotroph
Feeds by externally digesting organic matter and absorbing the nutrients
Ascomycota
Sac fungi
Ascus spore structure
EX: Morel and truffles
Yeasts and molds that rarely undergo sexual reproduction
Basidiomycota
Basidium spore structure
May be highly specialized
EX: Shelf or Coral
May not have fruiting bodies
EX: Smut or Rust
Fruiting bodies
Majority of morphological variation
Rely on moist environments for reproduction and dispersal
Brown Rot Fungi
Can break down cellulose but leaves lignin behind
Evolved before white rot
White Rot Fungi
Can break down cellulose and lignin
Mycorrhizae
Ancient symbioses with embryophyte that involve many fungi
Lichens
Symbiosis formed between a ascomycota and algae or cyanobacteria
Mycobiant
Fungal symbiont that forms lichen body
Photobiant
Performs photosynthesis (green algae/cyanobacteria)
Koch’s Postulates
Used to show how a microbe causes disease
Virulence factors
Fungi and bacteria have genes that increase virulence (EX: toxins, coatings, and adhesions)
Mycotoxins
Secreted by fungi and my impact human health via secondary infection or chronic exposure
Aflatoxin
Aspergillus flavus produces this mycotoxin
Ascospore
A cluster of 4-8 spores within the ascus of a ascomycota
Ascus
Diagnostic spore structure of Ascomycota
8 spores in a sac
Basidiospore
A spore produced by a basidium
Basidium
Diagnostic spore structure of Basidiomycota
4 spores on a club
Dikaryon
N + N when two mating type hyphae combine
Karyogamy
Fusion of two nuclei in dikaryon
Meiospore
Products of karyogamy-meiosis-cytokinesis
Mitospore (conidium)
Spores produced by mitosis characteristic of Ascomycetes
Plasmogamy
Protoplasm fusion to two mating type hyphae resulting in formation of a dikaryon
Truffle
Underground mushrooms part of Ascomycota
Yeast
Unicellular fungi
Many different groups form yeasts
(EX: Fermentation)