Details Title: Fungi Description: PATH/PBIO 4200/6200 Mims Lab ID test 2 Total Flash Cards: 42 Created: 11/26/2007 13:32:41		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Plant Sciences Flashcards
Cards in this set: Term Definition Sclerotium rolfsii This fungus produces no spores, but makes large sclerotia. This is a plant pathogen that causes white mold of peanuts. (mycelia sterilia) Term Definition Aspergillus clavatus Produces a powdery grey-green colony with club-shaped conidiophores. Term Definition Aspergillus nigra Forms dark colonies consisting of large club-like conidiophores covered in phialides and spores. Term Definition Geotrichum Thallic conidia (arthospores) arise from pre-existing hyphae. Hyphae fragment to form these thin-walled thallic conidia. Term Definition Penecillium chrysogenum Forms branched conidiophores with conidia-producing phialides at the tips. Term Definition Penecillium claviforme It has conidiophores united at the base to form large structures called synnemata. Term Definition Alternaria Produces phaeodictyospores: large conidia with transverse and longitudinal sections. Term Definition Curvularia This fungus produces phaeophragmospores. Term Definition Thielaviopsis 2 conidia types: (1) thick-walled thallic chlamydospores and (2) thin-walled blastic endoconidia produced from phialides. A common soil-inhabiting pathogenic fungus Term Definition Epicoccum nigrum This fungus produces conidia in masses called sporodochia.  Condia are dark and multicellular. Term Definition Colletotrichum This plant pathogenic fungus produces lesions called acervuli. The acervuli have dark sterile hyphae called setae that protude from the surface. Term Definition Dipodascus Saprobic ascomycete found growing in sap Forms limited mycelium and appears yeast-like in culture. Produces large asci containing large number of ascospores. Term Definition Schizosaccharomyces octosporus A fission yeast (reproduces asexually by fission) produces asci with 8 spores Term Definition Taphrina deformans plant pathogen that causes peach, oak leaf curl naked asci on both surfaces of infected leaves Term Definition Emericella nidulans Sexual stage of Aspergillus 1. cleistothecia--surrounded by distinctive cells called (2.)Hulle cells 3. reddish ascospores released from cleistothecia Term Definition Talaromyces Sexual stage of Penecillium 1. culture 2, 3. cleistothecia Term Definition Eurotium Sexual stage of Aspergillus The yellow/brown spheres are cleistothecia. The asci and ascospores are difficult to distinguish. Term Definition Phylactinia cleistothecia Term Definition Uncinula cleistothecia Term Definition Microsphaera cleistothecia Term Definition Sordaria top : perithecia bottom : squashed perithecia releaseing asci and ascospores Term Definition Chaetomium Perithecia covered with distictive wavy hairs. Term Definition Xylaria 1. Pieces of finger-like fungal stroma (dead man's fingers). Perithecia are embedded at edge of the stroma 2. and 3. Stained perithecia in stroma section Term Definition Hypoxylon 1. black fungal tissue on wood 2. necks of perithecia protrude above stromal surface Term Definition Daldinia Masses of fungal stroma. Concentric layers of stroma (at arrow). Perithecia produced at stromal surface. Term Definition Claviceps purpurea 1. stroma and stromal section 2. perithecium in stroma with long, slender ascospores 3. sclerotia on a head of rye Term Definition Cordyceps A fungal pathogen of insects and other fungi. 1. on scale insect 2. C. capitata stroma arising from the fruiting body of another fungus. Term Definition Morchella 1. morels; edible. form ectomycorrhize with plants 2. asci and ascospores Term Definition Helvella apothecia false morels--poisonous Term Definition Urnula apothecia are cup-like Term Definition Paxinia cup-like apothecia with stalks Term Definition Tuber These are truffles. These truffles are mycorrhizal with pecans. Term Definition Monilinia fructicola Top: peach mummies Bottom: apothecia Term Definition Rhizopus black bread mold 1. sporangia; columella surrounded by sporangiospores 2. rhizoids 3. zygospores in various stages. suspensors (remains of gametangia) visible Term Definition Phycomyces 1. Long metallic green sporangiophore, grows towards light. Has tiny black sporangium at tip 2. Heterothallic Phycomyces make a line of zygospores when they meet, forming gametangia and zygospores 3. zygospores Term Definition Cunninghamella Makes branched sporangiophores with swollen tips. The tips are covered with many 1-spored sporangia. Term Definition Thamnidium 1. Produces large multi-spored sporangia at tip and smaller sporangiola (with a few spores) each branching off main sporangiophore 2. Culture Term Definition Syncephalastrum Produces merosporangia terminates in a swollen head covered with slender, elongated merosporangia--a few spores in single file Term Definition Mycotypha 1. Sporangia in culture 2. sporangiophore. Looks like a miniature cattail. Tip is elongated, covered with 1-spore sporangia Term Definition Entomphthora E. muscae on horsefly insect pathogen cluster of conidiophores or sporangiophores on dead fly Term Definition Albugo Top : Oospores (stained red) in Oogonia in an infected leaf. Middle: Rust-like pustules on Morning glory leaf. Bottom: sporangiophores with chains of sporangia. The sporangia give rise to zoospores Term Definition Saprolegnia 1. Elongate terminal zoosporangia. 2. Terminal sporangia (zoosporangium) filled with zoospores. 3. Oogonia with oospores.