A fungus is not a plant. Multicellular fungi consist of mycelium, which are made up of strands called hyphae. Hyphae have enormous surface areas. Absorbs food from environment. Prone to drying out. Most of “body” of fungus is feeding structure.
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
which are made up of strands called hyphae.
Hyphae have enormous surface areas.
Absorbs food from environment.
Prone to drying out.
Only reproductive body typically exposed to air.
Thick, fleshy structure of “shroom” prevents drying out.
spores in sacs.
spores on clubs.
their nuclei may remain separate for a long time.
No point in learning this now, will change.
Basidiomycete fungi are the only organisms
that can completely digest the lignin in wood.
Fungi serve an essential role in the carbon cycle.
Only small molecules can cross plasma membranes.
Secreted enzymes break down large molecules.
Enzyme catalyzes removal
of a single electron; creating a
highly reactive atom.
Uncontrolled oxidation reaction
breaks up polymer.
(Most enzymatic reactions very
specific, but lignin itself highly
Randomness of reaction means
that E from oxidation can’t be
By cutting up lignin, fungi
gain access to cellulose.
The cellulase enzymes
digest cellulose into
glucose, which can be
used for food.
Importance of mycorrhizae discovered in ‘70’s.
Failure of pine plantations key observation.
EM fungi on most trees in temperate & boreal forests.
Hyphae penetrate dead leaves, twigs.
Release enzymes that cleave peptide bonds.
Provide N to plant in exchange for C.
AMF important in tropics and grasslands, on 80% of plants.
Ancient; fossil from 400 mya.
Provide phosphorus to plant in exchange for C.
hyphae and a layer of autotrophic
green algae or cyanobacteria
Colonize bare rock following
First stage in soil building.
impacts are those already mentioned.
accusations of witchcraft.
Ergot poisoning causes convulsions, shaking, or spasms
and sometimes hallucinations or gangrene.
Ergot is the original source from which LSD first isolated.
decline of amphibian populations.
virtual extinction of
the American chestnut.
Note the man, to show
This is also the genus used to make blue cheeses.
Penicillium roquefortii is used in the manufacture of blue cheeses e.g. Roquefort, Gorgonzola, Stilton, etc.
During the fermentation process the fungus spores are injected into the curd.
By the way, the blue in the blue-cheese is caused by the pigment in the spores of the fungus.
So, when you eat blue cheese you are consuming spores by the million.
Yeasts are also essential
to the production
of wine, beer and bread.