Many species of ants utilize the digestive power of

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Unformatted text preview: he guts cattle and other grazing mammals. Many species of ants utilize the digestive power of fungi by raising them in farms . Ecological Impact of Fungi Fungi & bacteria are principal decomposers Air so laden with fungal spores that as soon as a leaf falls or insect dies - covered with spores - infiltrated by saprobic hyphae Some fungi are pathogens 30% of the 100,000 known species are parasites Ophiostoma ulmi - ascomycete - Dutch Elm Disease Cryphonectria parasitica - eliminated American Chestnut Some species infect grain crops - wheat rust Some fungi that attack crops are toxic to humans mold Aspergillus aflatoxins carcinogenic Claviceps purpurea - forms purple structures called ergots on rye Poisons cause gangrene, nervous spasms, hallucinations & temporary insanity Lysergic acid isolated from ergots ~ 50 species of fungi are parasitic in humans & other animals athlete s foot & lung disease (a) Corn smut on corn (b) Tar spot fungus on maple leaves (c) Ergots on rye Term for fungal infection - mycosis Includes the disease ringworm Systemic mycoses are fungal infections that spread throughout the body usually from inhaled spores histoplasmosis and coccidioidomycosis Fungi are commercially important Mushrooms, distinctive flavors of roquefort & blue cheese Morrels & Truffles – delicacies - fruiting bodies of certain mycorrhizal ascomycetes associated with tree roots First antibiotic was made from common mold Penicillium...
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This document was uploaded on 03/02/2014 for the course BIO 109 at University of Missouri-Kansas City .

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