BISC 102 Lecture Notes - Lecture 2: Heterokaryon, Plasmogamy, Karyogamy
16 Jan 2017
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Document Summary
They release enzymes into their surroundings and digest nutrition around them, fungi will absorb it. Fungi can live as decomposers, predators, mutual, parasites. Oldest fu(cid:374)gal spore fossils are 460 (cid:373)illio(cid:374) years" old. Fungi live in mutual relationship living on roots of plants. Fungal hyphae absorb water and minerals better than plant. Mutualistic association between fungal hyphae and plant root. Mycelium > plasmogamy (fusion of cytoplasm) > heterokaryotic stage > karyogamy (fusion of nuclei) > zygote (2n) > meiosis > spore producing structures (n) > spores (n) > germination > mycelium. Mycelium > spore producing structures (n) > spores (n) > germination > mycelium. A series of key adaptations allowed plants to survive on land. Once plants were able to grow on land, a sequence of important evolutionary changes, made it possible for them to reproduce successfully. Fungi have unusual life cycles, and the spore is the most fundamental reproductive cell in fungi.
