CHARACTERISTICS • EUKARYOTIC • MOST MULTICELLULAR • HETEROTROPHIC : SAPROBES OR PARASITIC • BODY IS MADE OF HYPHAE • HAVE CELL WALLS MADE OF CHITIN • EARLIEST FUNGI FOSSILS ARE ABOUT 500 MILLION YEARS OLD • A FUNGUS IN WASHINGTON STATE COVERS AN AREA OF 1500 ACRES • FUNGI REPRODUCE ASEXUALLY AND SEXUALLY, AND ARE CHARACTERIZED BY THEIR METHOD OF REPRODUCTION • • • • • • PROS EDIBLE DECOMPOSERS BREADS PENICILLUM CYCLOSPORINE PREFERRED OVER BACTERIA FOR GENETIC ENGINEERING • • • • • • • • • CONS ATHLETES FOOT JOCK ITCH YEAST INFECTIONS MOLDY BREAD MILDEW RINGWORM SOME ARE TOXIC HISTOPLASMOSIS (95% in H.I.V. cases) SICK BUILDING SYNDROME Fungi and History! • Ergot is the common name of a fungus that infects grains. • Eating infected bread made from the grains causes Ergotism. • Ergotism causes convulsions, mental disturbances, and perceptual distortions. • Women accused of witchcraft in the 1600’s may have been suffering from Ergotism! SEXUAL REPRODUCTION DIVISIONS ZYGOMYCOTA ASCOMYCOTA BASIDIOMYCOTA DEUTEROMYCOTA ZYGOSPORES ASCOSPORES BASIDIOSPORES UNKNOWN • 600 SPECIES • COMMONLY FOUND IN SOIL & DUNG • MOLDS Shotgun Fungus • “SAC FUNGI” • 30,000 SPECIES • FOUND IN SOIL, DUNG, ROTTING LOGS, SALT AND FRESH WATER. • INCLUDES: YEASTS, MORELS, TRUFFLES • “CLUB FUNGI” • 25,000 SPECIES • MOSTLY TERRESTRIAL • INCLUDES THE MUSHROOMS, TOADSTOOLS, PUFFBALLS, SHELF FUNGI, RUSTS AND SMUTS • ASEXUAL REPRODUCTION IS CALLED FRAGMENTATION. • THIS FORM OF REPRODUCTION IS RARE IN THIS GROUP, EXCEPT IN SOME RUSTS AND SMUTS. • “FUNGI IMPERFECTI” • 10,000 SPECIES • TERRESTRIAL • INCLUDES ASPERGILLUS, PENICILLUM, ATHLETE’S FOOT, & RINGWORM More Parasitic Fungi