Test 2 (study guide) Flashcards
4 main groups of plant pathogenic fungi.
Ascomycota
Basidiomycota
Chytridiomycota
Ztgomycota
Three main groups of fungus-like organisms that cause plant disease.
Oomycota
Myxomycota
Plasmodiophoromyctoa
What is a sclerotium
The hard dark resting body of a certain fungi consisting of a mass of hyphal threads, capable of remaining dormant for long periods.
Ascomycetes:
Sexual-
Asexual-
Ascospores
Conidia
How do ascomycetes overwinter?
As sclerotia
Name two diseases caused by Ascomycetes.
Powerdy mildew
Sudden death syndrome of soybeans
Dollar spot of turf
What is the normal chromosome content of basidiomycetes during most of their life cycle?
Dikarotic hyphe(two haploid nuclei)
What are clamp connections and what group and the unique to?
Structure formed by growing hypal cells of certain fungi.
Basidiomycetes
Basidiomycetes:
Sexual-
Asexual-
Basidiospores
Teliospores
Smut fungi is a ______
rust fungi is a _______
facilatie saprophyte
obligate parasite
What are two diseases caused by Basidiomycetes?
Common smut of corn
stem rust of barley
cedar apple rust
What type of spores are produced by the chytridiomycetes?
Zoospores
What type of mycelia are produced by the zygomycetes?
Nonseptate mycelia
Zygomycetes:
Sexual spores-
Asexual spores-
Zygospores
Sporangiospores
What is the name of the fruiting body in zygomycetes that produces the asexual spores?
Sporangia
What are not in the fungi kingdom?
Oomycetes
What type of hypae are produced by oomycetes?
nonseptate hyphae
What is the chromosome content for most of the oomycetes lifecycle?
Diploid
Oomycetes:
Sexual-
Asexual-
oospores
zoospores
In oomycetes what fruiting body produces these spores?
sporangium
Name two plant diseases caused by oomycetes?
Pythium root rot
Phytophtora root rot
What is plasmodium?
A mass of cytoplasm containing many nuclei but no cell wall.
what fungus groups produce plasmodium?
myxomycetes
Plasmodiophoromycetes
What type of spores produce myxomycetes and plasmodiophoromycetes?
Zoospores