BIOL 111 Lecture Notes - Penicillium, Zygomycota, Aspergillus

• School: McGill University
• Department: Biology (Sci)
• Course: BIOL 111
• Professor: Andrew Hendry

Document Summary

Fruiting body (above ground) produces spores (n) through meiosis: asexual: budding, fission, conidia (haploid spores produced at tips of specialized hyphae) Spores in sporangia can be produced asexually (mitosis) Spores must be dispersed by wind or water. Break down rocks to soil (prod acidic subs) + food for animals. Layers: hyphae; photosynth cells; loose hyphae; hyphal rhizoids. Leaf cutter ants: break down cellulose + hyphae feed ant larvae; ants provide protection: plant pathogens (smut, ergots, tar spots, animal pathogens (thrush, ringworm, athletes foot) Yeast: asco, basidio, zygo, reproduce by fission or budding, have plasmids. Microsporidia: mitosomes (derived from mitochond. but no dna, obligate intracellular parasites, unicellular. Chytrids: have flagellated, uni + multicellular stages, role in amphibian decline (parasitize skin, no dikaryotic stages, aquatic, parasitic, mutualistic, saprobic. Sporangia on tips of specialized hyphae: multinucleate zygospores which are highly resistant to harsh conditions. Fruiting bodies in sacs: morels, truffles: molds + mildews: ergots, penicillium, aspergillus.