TWO FORMS OF HYPHAE (a) Septate hypha (b) Coenocytic hypha Nuclei Cell wall Pore Septum Nuclei Cell wall
1 pinch of soil can contain 1 km of hyphae
How much hyphae did she eat?
Some unique fungi have specialized hyphae called haustoria that allow them to penetrate the tissues of their host (a) Hyphae adapted for trapping and killing prey (b) Haustoria Fungal hypha Plant cell wall Plant cell Plant cell plasma membrane Haustorium Nematode Hyphae 25 m
Global amphibian populations are down due to fungal infection (mycosis) California Sixty Lake Basin Yellow-legged frogs killed by B. dendrobatidis infection Key Boundary of chytrid spread Lake status in 2009: Frog population extinct Treatment lake: frogs treated with fungicides and released N
Fungal production of antibiotic Zone of inhibited growth Staphylococcus Penicillium
Figure 31.UN06 Fungal Phylum Distinguishing Features of Morphology and Life Cycles Chytridiomycota (chytrids) Flagellated spores Zygomycota (zygote fungi) Resistant zygosporangium as sexual stage Glomeromycota (arbuscular mycorrhizal fungi) Arbuscular mycorrhizae formed with plants Ascomycota (ascomycetes, or sac fungi) Sexual spores (ascospores) borne internally in sacs called asci; vast numbers of asexual spores (conidia) produced Basidiomycota (basidiomycetes, or club fungi) Elaborate fruiting body (basidiocarp) containing many basidia that produce sexual spores (basidiospores)