Studydroid is shutting down on January 1st, 2019

Bookmark and Share

Front Back
multi-nucleate & aseptate
gametangia (in oomycetes)
oogonium and antheridium
a grouping assigned to oomycetes because they produce two different types of flagella on a single zoospore
heterothallic, heterogametangic
In Oomycetes, mating types produced by seperate individuals.  Sexual reproduction requires both mating types to be present.
oomycete cell wall composed of
B-glucans, cellulose
Mitochondrial characteristic of oomycetes vs true fungi
tubular cristae vs flattened in true fungi
golgi difference between oomycetes and true fungi
multiple cisternae vs single in true fungi
Not present in oomycetes.  Region of hyphal growth in true fungi.
oomycete lysine biosynthesis
diaminopimelic acid pathway (DAP) - same as plants
oomycete sterols
sitosterol - required in many spp. for sexual and asexual reproduction
oomycete storage compound
beta 1-3 glucans (mycolaminarins)
oomycete zoospre flagella:
how many?
type and position?
2 flagella.  Anterior tinsel, posterior whiplash
oomycete meiosis vs true fungi
gametangial vs zygotic
meiosis occurs in antheridia and oogonia prior to fertilization, then karyogamy occurs in oosphere to form oospore
Oomycete pheremones A and B
A - antheridiol, produced by "female" strain stimulates growth of antheridium in "male" strain.  Also causes chemotrophic movement of antheridia toward oogonia.

B - oogonial, produced by "male" strain, initiates growth of oogonia
Two major groups of oomycetes
Saproleginalean:  primary and secondary zoospores, only reproduce via sporangia

Peronosporalean:  Only secondary zoospores, reproduce via sporangia and evanescent vesicle
Sporangiophore type:
indeterminate sporangiophores
determinate sporangiophores
club-shaped sporangiophores, catenate sporangia.
oomycete vs hyphochytridiomycete
biflagellate zoospore vs uniflagellate

cellulose cell wall vs both cellulose and chitin
x of y cards