BIOG162 - Module 14 General Fungi Structure + Reproduction

Covers types of reproduction in fungi and their general structure.

fungi

sessile, absorptive heterotrophs (mostly saprotrophs), store carbohydrates as glycogen, have cell walls made of chitin, could be parasitic or symbiotic, can reproduce sexually and asexually

nucleariids

closest protist origin to fungi

mycelium

embedded in the soil, made of branched filaments

fruiting body

above ground, where reproduction occurs, reproduce via spores

hyphae

fungi body of highly branched filaments

septate hyphae

have a clear separation between cells

nonseptate hyphae aka coenocytic

no distinct separation between cells

septa

the spaces located between cells

spores

haploid, can reproduce immediately and don’t have to fuse together to reproduce

through spores, budding, and fragmentation

fungi asexual forms of reproduction

How do fungi find compatible mates?

pheromones

pheromone

sexual hormones that attract a mate

fungi sexual reproduction

hyphae grow toward each other before fusing together (plasmogamy → heterokaryotic fusion) and producing 4 haploids

plasmogamy

2 hyphae fuse together

heterokaryotic

separate nuclei in plasmogamy

karyogamy

2 nuclei fuse together