Chapter 24 Flashcards
def of Fungi
eukaryotic singles cells or vast networks of filaments that are important decompsers
Importance of fungi
Release nutrients from dead plants and animals
Trnasfer nutrients to live organisms
Great influence on biodiversity
critical to carbon cycle
Saprophytic fungi
Causes spoiling of fruits and vegetables
Decompose plant matter
How do fungi influence BIodiversity and productivity
Because they are very key to carbon cycle and nutrient cycling
Why does recycling matter?
Because if we don’t recycle, nutrients can be locked away forever without being re-introduced
Saprobes/saprophytes
Fungi that digest dead plants
Carbon cycle in the land
- Fixation by plants
- Release of CO2 by respiration
- Dead plants that have Carbon locked are used by fungi and they release CO2 by respiration
Good and bAd fungi
Good: Carbon cycle, recycling nutrients, antibiotics, and food products
Bad: Plant and animal diseases
Single called vs multicellular
Single called is called yeast
But they act the same as decomposers
Mycellium
Multicellular, grows towards food and leaves a filament skeleton
Hyphae
Long narrow branches of filament
Septa
Cross-walls espérate filaments into cells
Coenocytic
cell with multiple nuclei
Mycelia likes
- High SA/V
- Moisture
- Prone to desiccation (spores are resitant)
Mycorrhizal
SYmbiotic relationship between fungi and plant roots
EMF
-Ecomycorrhizal fungi
* they are in between cells
-Found on many tree species
-Dense network of hyphae
-Provide phosphate ions
AMF
-Arbscular mycorrhizal fungi
* they are found inside of cells
-Veyr common
-Droguht resistance
- Deters herbivory
Cordyceps Fungi
Cordyceps fungi is the fungi that “zombifies” ants
Extra cellular digestion
Lingin and cellulose are consumed by fungi
What’s a spore
A fundamental reproductive cell in fungi
MAting types in fungi
There are no sexes in fungi but mating types (Around 10k)
Sexual reproduction
- Fusion of hyphae
- Fusion of nuclei from fusion of hyphae
PLasmogamy
Fusing of cytoplasm of two different mating types
Heterokaryotic
Multiple nuclei in one cell
Karyogamy
Fusing of nuclei to form a zygote
Mycosis
Another word for a fungal disease
Athlete’s foot
Fungal infection that is caused by an asomycete
Ringworm
A fungal infection that is caused an asomycete
Lichens
mutualistic relationship between fungi and algae
Help algae survive so they can contribute to the carbon cycle
4 life cycle types
- Chytrids
- Zygomycete
- Basidiomycete
- Ascomycete
Chytrids
Aquatic fungi that has been destroying amphibians.
Alternate generations, no dikaryotic stage
Zygomycetes
Decays plant and animal material
Ascomycete
Cup shaped fungi and their reproductive structure is called asci
Basidiomycete
Club like spore producing cells that are called basidia
Haustoria
Mycorrhizae and plant root connection