Plant Pathology Lab Exam Study

What is this structure?

Naked Asci, secxual reproduction

Name this Structure

Chasmothecia, sexual reproduction

Name this structure and where its found

Perithecia found in the stroma, for ergot of rye, sexual reproduction

Name this stucture and what pathogen studied

Apothecia, a cup-shaped fruiting body of certain fungi, sexual reproduction, monilinia fructicola

Name this structure

Pycnidium, produced conidia aexual reproduction

Name this structure and what pathogen did we look at it with?

Pseduothecium, has double walled asci, has sexual reproduction,Apple Scab (Vent, Inequlis)

What structures are on this?

telia, then basidium on top of that, then sterigmata, then basidiospores at top on Stem Rust of Wheat

What special characteristics differentiate Basidiomycota from other fungi

clamp connections, dikaryotic for most of life, cell wall of chitin

For Weat infected with rust what spore is used to inoculate a new healthy wheat?

aeciospore or urediniospores

What is the Purpose of Koch’s Postulates?

to establish cause of relationship between pathogen and host

Control is used when doing Koch’s postulate because?

to prove the harming or poking to inoculate isn’t causing pathogen, just the actual pathogen its self

What role do conidia play in disease cycle of ascomycete pathogens?

re-infection/cause reinfection in other hots in same year, asexual reproduction

What importance are ascocarps to ascomycete pathogens?

fruiting body for asci ands ascospores, reproduce sexually

What are these structures and what disease does it cause?

fusarium wilt macro and micro conidia and mycelium

What differentiates ascomycota from other fungi

cross walls, the ascocarps, septate hyphae (one cell per wall area), conidia for asexual

What is this structure and what diseases?

Macrophomina phaseolina - microsclerotia

What is this structure and what diseases? specifically top area

Sclerotina Minor saprophytic and parasitic fungus lettuce drop

Pycnidium is

flask shape asexul fruiting body produces conidia

Perithecium is

sexual ascocarp

Pycnia

flask shaped structure produced by rust fungi in Basidiomycota

What structure is this and what did it come from?

Mature Zygote, in Rhizopus Stolonifer, from two mycelium forming, plasmogany, karyogmay

what is this structure?

On Rhizopus Stolonifer, asexual reproduction, sporangiophore, sporangium, sporangiospores produce from little top part

Is this a haploid or diploid?

haploid

What is this structure?

black loose smut of oats

What is this Structure?

strawberry leak sporangiophore,sporangium and sporangospores

What disease is this?

Rhizoctonia solani, rhizoctonia stem canker and seedling disease of bean, Monilioid cells/hyphae

What is this/what is it on? What is basidia and basidiospores

Pore Fungus, Polyporus species,

What is this/what is it on? What is basidia and basidiospores

Coprinus, gill fungus,

What is the long tubes that are apart of Amirillia thats on the bark?

rhizomorphs

What helps identify Penicillium?

brushlike conidiophores, conidia spreads asexual spores

What is alternaria how is it reproduced?

asexual soil fungus, spread by conidia

How does alternaria overwinter?

mycelium or conidia in plant debris

What is this and what is its function?

Aspergillus niger (black mold), conidiophore is tube, asexual reproducton

What is this structure and fuction?

Microsclerotia of Macrophomina, overwinter structure, seedling blight/crowns rot

What is this image and what did we disease is it?

Fusarium oxysporum macroconidia, asexual structure,

What structure is this and what did we study for it?

Botrytis cinerea conidiophores and conidia, grey mold on especially on strawberry and grape

What is this structure and whats its function?

Penicillium conidiophores and conidia, asexual repro, conidia that spread green mold

What is this structure and what’s its function?

Alternaria conidia, asexual spores that spread early blight

What is this structure and what’s its function?

Colletotrichum acutatum conidia, asexual reproduction that spread anthracnose

What is this structure and what’s its function?

Powdery mildew conidia, asecxual reproduction spread powdery mildew

What is this stucture?

teliospores in corn smut ustaligo maydis

What is this structure and what’s its function?

Claviceps sclerotium, overwintering structure, germinates later

What is this structure and what’s its function?

Amerillia Rhizomorphs, spread thriugh soil/root systems and infect new roots

what is the middle structure on the stem and fuction?

Remnant of a partial veil; helps identify the mushroom, not the main survival structure

What is this structures and what’s its function?

pcynia with pycniospores on top-sexual repro, aceia with aeciospores produce spores to infect wheat