Shared Flashcard Set

Details

Fungi
PATH/PBIO 4200/6200 Mims Lab ID test 2
42
Plant Sciences
Undergraduate 3
11/26/2007

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Cards

Term
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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
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Definition

Aspergillus clavatus

Produces a powdery grey-green colony with club-shaped conidiophores.

Term
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Definition

Aspergillus nigra

Forms dark colonies consisting of large club-like conidiophores covered in phialides and spores.

Term
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Definition

Geotrichum

Thallic conidia (arthospores) arise from pre-existing hyphae. Hyphae fragment to form these thin-walled thallic conidia.

Term
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Definition

Penecillium chrysogenum

Forms branched conidiophores with conidia-producing phialides at the tips.

Term
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Definition

Penecillium claviforme

It has conidiophores united at the base to form large structures called synnemata.

Term
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Definition

Alternaria

Produces phaeodictyospores: large conidia with transverse and longitudinal sections.

Term
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Definition

Curvularia

This fungus produces phaeophragmospores.

Term
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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
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Definition

Epicoccum nigrum

This fungus produces conidia in masses called sporodochia.  Condia are dark and multicellular.

Term
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Definition

Colletotrichum

This plant pathogenic fungus produces lesions called acervuli.
The acervuli have dark sterile hyphae called setae that protude from the surface.

Term
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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
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Definition

Schizosaccharomyces octosporus

A fission yeast (reproduces asexually by fission) produces asci with 8 spores

Term
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Definition

Taphrina deformans

plant pathogen that causes peach, oak leaf curl
naked asci on both surfaces of infected leaves

Term
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Definition

Emericella nidulans

Sexual stage of Aspergillus
1. cleistothecia--surrounded by distinctive cells called (2.)Hulle cells
3. reddish ascospores released from cleistothecia

Term
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Definition

Talaromyces

Sexual stage of Penecillium
1. culture
2, 3. cleistothecia

Term
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Definition

Eurotium

Sexual stage of Aspergillus
The yellow/brown spheres are cleistothecia. The asci and ascospores are difficult to distinguish.

Term
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Definition

Phylactinia

cleistothecia

Term
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Definition

Uncinula

cleistothecia

Term
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Definition

Microsphaera

cleistothecia

Term
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Definition

Sordaria

top : perithecia
bottom : squashed perithecia releaseing asci and ascospores

Term
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Definition

Chaetomium

Perithecia covered with distictive wavy hairs.

Term
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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
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Definition

Hypoxylon

1. black fungal tissue on wood
2. necks of perithecia protrude above stromal surface

Term
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Definition

Daldinia

Masses of fungal stroma. Concentric layers of stroma (at arrow).
Perithecia produced at stromal surface.

Term
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Definition
Claviceps purpurea

1. stroma and stromal section
2. perithecium in stroma with long, slender ascospores
3. sclerotia on a head of rye
Term
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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
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Definition

Morchella

1. morels; edible. form ectomycorrhize with plants
2. asci and ascospores

Term
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Definition

Helvella

apothecia
false morels--poisonous

Term
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Definition

Urnula

apothecia are cup-like

Term
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Definition

Paxinia

cup-like apothecia with stalks

Term
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Definition

Tuber

These are truffles. These truffles are mycorrhizal with pecans.

Term
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Definition
Monilinia fructicola

Top: peach mummies
Bottom: apothecia
Term
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Definition

Rhizopus

black bread mold
1. sporangia; columella surrounded by sporangiospores
2. rhizoids
3. zygospores in various stages. suspensors (remains of gametangia) visible

Term
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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
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Definition

Cunninghamella

Makes branched sporangiophores with swollen tips. The tips are covered with many 1-spored sporangia.

Term
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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
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Definition

Syncephalastrum

Produces merosporangia
terminates in a swollen head covered with slender, elongated merosporangia--a few spores in single file

Term
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Definition

Mycotypha

1. Sporangia in culture
2. sporangiophore. Looks like a miniature cattail. Tip is elongated, covered with 1-spore sporangia

Term
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Definition

Entomphthora

E. muscae on horsefly
insect pathogen
cluster of conidiophores or sporangiophores on dead fly

Term
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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
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Definition

Saprolegnia

1. Elongate terminal zoosporangia.
2. Terminal sporangia (zoosporangium) filled with zoospores.
3. Oogonia with oospores.

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