BIOL 119 Chapter Notes - Chapter 32: Irritant Diaper Dermatitis, Chytridiomycota, Mycelium
Document Summary
Grow as single cells or large branching networks of multicellular filaments. Some are decomposers, some absorb nutrients form living organisms, mutualists. Large impact on ecosystem productivity and biodiversity due to their ability to recycle key elements such as carbon, nitrogen, and phosphorous, and transfer key nutrients to plants and animals. Humans, parasitic fungi- athlete"s foot, (cid:448)agi(cid:374)itis, diaper rash, ri(cid:374)g(cid:449)or(cid:373), p(cid:374)eu(cid:373)o(cid:374)ia, thrush. Humans, many antibiotics made to attack bacteria originate from fungi. Largest destructive impact from fungi is through food supply. Accelerate carbon cycle on land: saprophytes- digest dead plant material. If fu(cid:374)gi did(cid:374)"t digest lig(cid:374)i(cid:374) a(cid:374)d (cid:272)ellulose (cid:272)ar(cid:271)o(cid:374) (cid:449)ould (cid:271)e stu(cid:272)k i(cid:374) (cid:449)ood for millennia instead of being rapidly recycled into glucose and co2. Morphology- simple: yeasts- single-celled forms, mycelia- multicellular, filamentous. Mycelia: constantly grow in the direction of food sources and die in areas where food is running out; body shape changes continuously throughout its life.
