Kingdom Fungi Diversity of Life ~ Bio 20 Mrs. S. Pipke-Painchaud Curriculum Connections . . . 2. Recognize the role of monera, protists, and fungi in the ecosystem. 2.1 Describe viral structure and activity. 2.2 Identify some viral diseases prevalent in plants, animals, and humans in Saskatchewan. 2.3 Discuss the various ways bacteria are classified. 2.4 Describe some diseases caused by bacteria which affect organisms living in Saskatchewan. 2.5 Identify some valuable roles played in the ecosystem by bacteria. 2.6 Distinguish between prokaryotes and eukaryotes. 2.7 Describe how the protist kingdom is classified. 2.8 Collect, culture, and observe a variety of protists. 2.9 Describe the general characteristics of fungi. 2.10 Collect and observe some samples of fungi. 2.11 Identify the basic structural features of bacteria. Fungi Characteristics . . . Eukaryotic Heterotrophic (saprotrophic) 1. 2. Mostly terrestrial Non-motile Most are multicellular 3. 4. 5. Except yeast Consist of hyphae (thread like structures) 6. 7. Some are parasitic Lack Chlorophyll Hyphae tangled together = mycelium Cell walls of chitin Reproduce asexually and sexually via spores that develop into hyphae Info from BSCS 8th Edition Importance . . . 1. 2. 3. 4. 5. Key decomposers along with bacteria Sources of antibiotics Many cause plant diseases Some form symbiotic relationships Used to produce food: 1. 2. 3. Breads Making alcohol Producing drugs Info from BSCS 8th Edition Examples Mushrooms, molds, mildews, rusts, smuts Phylum Zygomycota: Example: Rhizopus Black Bread mold (can grow on grapes or strawberries, etc) Rhizopus is a common bread mold. The pink lines are the hyphae, the dark pink ovals are individual zygosporangia, that are Some are parasitic (plant disease) produced when two individuals (a positive and negative mating type) meet Most are decomposers Rhizopus http://www1.fccj.org/dbyres/images/rhizopus.jpg Characteristics: No cross walls on hyphae Reproduction by asexual spores and sexual conjugation to form Zygospores. Info from BSCS 8th Edition Phylum Ascomycota: Sac Fungi Examples: yeast, apple scab, powdery mildew, blue-green molds, Morels, truffles Chestnut blight and Dutch Elm Disease Athletes Foot Fungus Characteristics: Cross walls divide hyphae Reproduction: Asexual: Conidiospores Sexual: Ascospores (produced in the asci – sac like structures) Yeast: Yeast: http://www1.fccj.org/dbyres/fungi.htm “A large group of single celled yeast are shown here. Yeast is an ascomycete, but it reproduces almost exclusively by asexual reproduction (budding). Each cell just divides in two. This genus of yeast is used for baking (it makes the carbon dioxide that helps dough to rise) and also beer and wine making (in anaerobic conditions yeast produces alcohol). The genome of yeast was recently sequenced.” Single celled Essential in bread making and production of alcoholic beverages (i.e. beer and wine) In anaerobic conditions, yeast breaks down sugar into carbon dioxide and ethyl alcohol. i.e. bread rises, foam on beer Info from BSCS 8th Edition Powdery Mildew https://supersonichydro ponic.com/components/ com_fpslideshow/imag es/powdery_mildew.jpg Lilac Leaf Powdery Mildew http://www.kastlekare .com/images/downey -mildew-large.jpg Phylum Basidiomycota Wheat Rust: Club Fungi Examples: http://www1.fccj.org/dbyres/images/rust100.jpg Bracket fungi, smuts, rusts, jelly fungi, puffballs and stinkhorns Mushrooms “This image shows the urediospores of the fungus bursting out of the top surface of a wheat leaf. This spreads the infection to other wheat plants.” Characteristics: Hyphae divided by cross walls Reproduction: Sexual: Basidiospores (produced on the basidium) Info from BSCS 8th Edition Rust http://www.plantpath.wi sc.edu/PDDCEducatio n/MasterGardener/Gen eral/Slide12.htm Stem, Leaf & Stripe Rust http://www.grdc.co m.au/director/event s/grdcpublications/r ustlinks Corn Smut http://www.apsnet.org/Education/Illustrated Glossary/PhotosS-V/smut.jpg “a group of fungi in the Basidiomycetes that typically releases masses of black dusty teliospores at maturity (corn smut caused by Ustilago zeae)” Phylum Deuteromycota Imperfect Fungi Examples: Fusarium, alternadria, penicillium Penicillium roquefortii = roquefort cheese P. camembertii = camembert cheese P. notatum = drug penicillin Characteristics: Cross walls divide hyphae Reproduction: Penicillium: http://www1.fccj.org/dbyres/fungi.htm Asexual: spores Sexual: unknown (has not been observed) Grouped for convenience Info “The pink lines are hyphae of the Penicillium fungus, the circular dots are spores. Penicillium was the original source of the first antibiotic Penicillin. It is also used in producing blue cheese, like Brie and Camembert.” from BSCS 8th Edition Mycorrhizal Fungi A symbiotic relationship between roots and fungi Fungi absorb soil nutrients and secrete an acid that makes the nutrients more available to the plant. Sugars produced in photosynthesis nourish the fungi. Fungi absorb water and protect from other pathogens found in the soil. Orchids and pines do not grow well if their mycorrihizal fungi are absent. Increase surface area of the root Lichens Is a symbiotic relationship between a fungus and algae or cyanobacterium Looks like a mass of fungal hyphae but are filled with algae inside. Secrete acid which breaks down bare rock (i.e. pioneer organisms); can also tolerate extreme conditions Can completely dry out and become dormant until moisture is available. Growth occurs when water is available (grows in spurts) Lichens are good indicators of pollution because the toxins are concentrated in the cells. i.e. radioactive waste has been measured in lichens. (biomagnification) Example: Reindeer Moss – found in the arctic Other interesting facts… Fungi at Chernobyl Recent monitoring work on the devasted ruin of the Chernobyl nuclear power plant has noted significant fungal growth on the walls of inner sanctum of the ruin of the power plant. Over 37 species have been recorded mainly of deuteromycetes. Some species like Alternaria alternata, Cladosporium sphaerospermum and Penicillum hirsutum were found more typically in the severely contaminated areas and it is suggested in the research that they may be active biodestructors of extremely radioactive substrates. The radiation levels there are about 10000 times that that would be fatal in humans! For full details of this research, see Zhdanova, N., Zakonechnaya, V.A., Vember, V.V. & Nakonechnaya, L.T.: Fungi from Chernobyl. Mycological Research 104 (2000), p.1421-1426 http://www.nifg.org.uk/facts_a.htm#Why%20female%20pigs%20hunt% 20truffles A Few Facts About Fungi http://www.uoguelph.ca/~gbarron/MISCELLANEOUS/facts.htm BEVERAGES. The average person consumes beverages produced by fungi on a daily basis. All the citric acid used in soft drinks, candies, artificial lemon juice, baked goods etc. (check the labels) is produced industrially by fungus fermentation using Aspergillus niger. The yeast fungus (Saccharomyces cereviseae) is used in fermentation processes that result in the production of beers, wines and spirits (billions of gallons!) A Few Facts About Fungi http://www.uoguelph.ca/~gbarron/MISCELLANEOUS/facts.htm OTHER FOOD PRODUCTS. The yeast fungus Saccharomcyes is also used in the leavening of bread and other baked products. The blue mould, Penicillium, is used in the ripening process to prepare speciality cheeses such as blue cheeses e.g. Roquefort, Gorgonzola, Stilton etc. and soft cheeses such as Camembert and Brie. A Few Facts About Fungi http://www.uoguelph.ca/~gbarron/MISCELLANEOUS/facts.htm ANTIBIOTICS from FUNGI There are a number of important antibiotics produced industrially by fungal fermentation for use as medicines in humans and animals. These include penicillin by Penicillium chrysogenum, cephalosporin by Acremonium (=Cephalosporium), griseofulvin by Penicillium griseofulvin etc. A Few Facts About Fungi http://www.uoguelph.ca/~gbarron/MISCELLANEOUS/facts.htm ALLERGENS We breathe in spores of FUNGI on a daily basis. The so-called clean country air may contain as many as 10,000 fungal spores per cubic metre. Also fungi grow very nicely in and around houses. Fungi sporulating in basements and bathrooms can become a significant component of house dust and a major problem for those with mould allergies. Those who are prone to allergies can become sensitized to many one of a large number of fungal species. Only those that reach significant levels in the air and that are of fairly common occurrence are important as human allergens. These include Penicillium, Aspergillus, Alternaria and Cladosporium. A Few Facts About Fungi http://www.uoguelph.ca/~gbarron/MISCELLANEOUS/facts.htm MYCORRHIZAL FUNGI form intimate associations (MUTUALISTIC SYMBIOSIS) with the roots of higher plants. The fungal hyphae function in place of root hairs for the absorption of water and minerals. These mycorrhizal fungi can also protect the roots from attack by other fungi. Each forest tree has hundreds of thousands of kilometres of hyphae supplying it with water and inorganic salts. In return the tree supplies the fungus with sugars (carbohydrates) manufactured in its leaves. A Few Facts About Fungi http://www.uoguelph.ca/~gbarron/MISCELLANEOUS/facts.htm SAPROPHYTIC FUNGI are the primary agents responsible for the biodegradation of plants and woody debris (cellulose and lignified cellulose). EIGHTY-FIVE BILLION tons of carbon is returned annually to the atmosphere as carbon dioxide by decay of cellulose and lignified cellulose. Most of this is by fungi. Want more facts?? A Few Facts About Fungi http://www.uoguelph.ca/~gbarron/MISCEL LANEOUS/facts.htm Resource Websites: Excellent Images: http://www.richard- seaman.com/Fungus/USA/DevilsLake2003/ Fungi: Images and short info http://www1.fccj.org/dbyres/fungi.htm Complete the Mushroom Lab Green BSCS Text Reference: Read pages 320-324 Complete Questions 1-5 (p.324) Read pages 324-328 Complete Questions 1-5 (p.328)