ascomycota - aspergillis sp
a common air borne mold
often the cause of air quality problems in poorly constructed buildings
phylum zygomyctoa black bread mold ( rizopus sp)
common mold on bread, fruit and vegetables note thread like hyphae , a filament of fungal cells
phylum ascomycota ( claviceps sp>
Plant disease on rye.
* Fungus produces an alkaloid chemical called lysergic acid
diethylamide (known as LSD). Chemical, if ingested by
humans eating infected grain, causes gangrene, psychotic
delusions, nervous spasms, and convulsions.
* This disease (ergotism) is responsible for millions of
deaths and may be the cause of the Salem Witch Trials in
the 1690’s.
Phylum Ascomycota
Lichens
Lichens are a symbiotic relationship between fungi and
algae (Protists) or cyanobacteria (Bacteria).
* Photosynthesis by algae provides food for the fungus;
fungus provides protection for the algae.
* Sensitivity of lichens to air pollution and acid rain makes
them excellent indicators of environmental quality.
* Observe lichens on the tree branch.
Phylum Basidiomycota
Coprinus sp.
Cross-section of a gill of a mushroom.
* On slide, wagon wheel shape is the mushroom cap.
* The spokes are the gills.
* On gills, note basidium (club) with basidiospores.
Phylum Basidiomycota
White Button Mushroom (Agaricus brunnescens)
Common, edible mushroom.
* The mushroom is a sexual reproductive structure
(basidiocarp) made of densely intertwined hyphae.
* Gills, located on underside of cap, contain basidia which
release spores.
- wet bubble disease
Phylum Basidiomycota
Polyporus
Cross-section of a mushroom cap which has pores rather
than gills.
* Basidia and basidiospores are visible around the perimeter
of pores.
Phylum Basidiomycota
Corn Smut (Ustilago zeae)
Basidiomycete which is a pathogen on corn plants.
* Fungi does not produce a basidiocarp, instead basidia
project from plant’s surface and release spores.
Phylum Basidiomycota
Wheat Rust (Puccinia graminis)
Fungus which causes stem rust on wheat plants.
* Named a rust because as the fungus produces many small,
yellow-orange pustules it takes on the appearance of rusted
metal.
Ascomycota
Blue Mold (Penicillium sp.)
Observe asexual reproductive structure.
* Common air-borne fungus
* Fungus consists of blue-grey hyphae.
* Specimen produces the antibiotic Penicillin.
Ascomycota
Candida albicans
Common fungus that thrives on animal mucous
membranes.
* Strains of Candida cause vaginitis and thrush.
* They may become problematic if they grow rapidly.
* Change in pH may cause an increase in the population.
* Fungal infections are difficult to treat due to similarities
between fungal cells and animal cells.
Ascomycota
Saccharomyces cerevisiae
Instrumental in winemaking, baking, and
brewing since ancient times.
* The microorganism behind the most common type of
fermentation – the process where an energy food molecule
like glucose is broken down to yield ethanol and carbon
dioxide (C6H12O6 2 C2H5OH + 2 CO2). It is the bubbles
produced during fermentation that makes bread rise.
* Reproduces through a division process known as budding
