mycology exam 1

92 terms by Biloba414 

Ready to study?
Start with Flashcards

Create a new folder

Advertisement Upgrade to remove ads

Glycogen

True Fungi primary storage carb.

Telemorph

sexual stage or perfect stage

Anamorph

asexual or imperfect stage

Stromenopiles, slime molds (cellular and net)

What are NOT fungi

Chytridomycota, glomeromycota, zygomycota, ascomycota, basidiomycota

Kingdom Fungi Phyla

Robigo

rust god in cereals around 370 BC

british people drinking tea

until 1870 cofee made in sri lanka, rust killed resulting in

potato Famine

1840s 2 million dead, Phytophtora infestans

Aspergillus niger

used to make citric acid for foods

Mycelium

mass of hyphae-body of a fungus

Thallus

the somatic body

Assimilative form

the vegetive/somatic body

Mutualist

lichens, mycorrhizae, leaf cutter ants

parasites

facultive, obligate

Role of fungal cell wall

structure, turgor, barrier with diffusion, chemoreception

Chitin

composes fungal cell wall

Melanins

dark brown to black pigment, protects from uv light and dessecation

Ascomycete/Basidiomycete cell wall made of

Chitin

Zygomycete cell wall made of

Chitosan

Oomycetes cell wall made of

cellulose

microvesicle

On hypal tip (chitosomes, perocisomes)

vesicle cloud

on hyphal tip

spitzenkorper

cluster of vesicles at the hyphal tip that delivers material necessary for growth

Chitosomes

chitin synthesis organelle-deliver zymogen chitin synthase to apical tip.

Chitinases and glucanases role at hyphal tip

soften wall to aid direction of tip growth

What occurs at same time in hyphal tip

growth AND degradation

Septa

cross walls formed in hyphae

primary septa

are formed by hyphal extension, usually with a septal pore.

Secondary or adventitious septa

are imperforate, formed to wall off agein parts of mycelium

Asco/Basidiomycota have __hyphae

septate

8 Steps of protein secretion

ribosomes load with mRNA-dock onto ER-polypeptide enters ER luman-nacent peptide modified-transported to golgi-er vesicles lipids recycled-golgi modifies/trims/folds- vesicle carries to secretion site

Fungi uptake mediated by

pores/channels, porters(against gradient), driven by H pumps to create PH gradient

Appressoria

cell wall with septa behind it that builds of pressure to force itself into host tissue

Who forms appressoria?

Asco/Deutero/oomycetes

Haustorium

often attached to appressorium, fungal hyphae breaches cell wall but not cell membrane

Rhozoids

root-like branches stemming from thallus, support, release digestive enzymes

Rhizomorphs

Root-shape, usually basidiomycetes

Sclerotia

hyphal resting structure, high in glucans, survive many years in harsh enviroment. Asco/Basido

Hyphal Tip Growth process first 5 steps

1.hyphae grows, steep gradient formed towards tip
2.flow mediated by micro-filiments
3.actin at tip of spitzencorper prevents bursting
4.tip fills with secretion bodies
5. vesicles filled with chitosomes and chitinases to grow and soften

Hyphal Tip Growth process second 5 steps

6. Chitin deposited non-cross linked as made
7.cell wall polmerizes
8.glycerol makes turgor
9.additional proteins added
10.new branches formed by targeted weakining of cell wall and making new spizenkorper

Hydrophobins

water resistance, mainly to control water pressure

Woronin

plugginh and regulating tip wall, more complex b/c two nuclei in one cell and ability to regulate (asco)

Polar meristem

all growth at tip, no intercalary growth.

Phylogeny

Like a family tree, historical sewuence of changes that occur in a given species during the course of it's evolution

Zoospore Nuclear Cap

rich in protein and rhibosome

Zoospore Flagellum

makes motile

planogamete

moving gamete

isogamete

gamites that are similar in shape and size

operculum

opens like a lid to shoot spores

Haplophase

1n, one copy of chromosome

Diplophase

n+n, two nulclei

Holocarpic

As in Zoospore, entire spore encysts and fills with haploid zoospores

Somatogamy

fusion of two cells

Batrachochytrium dendrobatidis

Chytridiomycosis of amphybians, disrupts frog ion balance

Cellular vs True Slime Mold

cellular collection of cells, true all one organsism

Plasmodium

main diff between cell and true slime molds. True HAVE IT

Dictyostelium

used as model because easy to see whole life cycle

Aggregation

collection of cells controlled by cyclic AMP

Slime mold "Slug"

formation after slime mold aggregation before fuiting

Myxomycete

slime molds, with extended diploid phase

Glomates

Phylum-Zygomycota/ Order-glomarmycota. AM fungi (arbuscular mycorrihiza)

Arbuscule

threadlike mycellial fingers of Glomates

Deuteromycetes

contain all fungi with no sexual stage

Schizolytic

the halves of a double septum split apart by the breakdown of a kind of middle lamella. one wall formed

Rhexolytic

the outer wall of a cell beneath or between conidia breaks down. 2 walls formed

Penicillium pieces

Conidia (spores) attached to Phialide (stalk) attached to specialized hypha

Olpidium brassicae

Chitridmycota, holocarpc, endoparasitic, inoperculate, isogamy, infects grass and cabbage roots.

Chytriomyces hyalinus

Chitridmycota, eucarpic, epibiotic, operculate, rhizomycelium

Zygomycota

non-motile spores, bread molds, rhizopusm piloblus

Heterothallic

cannot mate with self

Homothallic

can self reproduce

Zygosporangium formation

opp mating types, form gametangia, septa between gametangia dissolves (plasogamy) zygosprngm mature with suspensors

Rhizopus stolonifer

Zygomycota/ mucorales. assexual with sporangiospore, rhizoids and stolons on thallus

Pilobolus

the hat thrower, sporangiophore curve to follow light to get in field to get eaten. 27m/sec

Basidiobolus ranarum

only genus in basidiobolaceae of zygomycota

VAM fungi

Vascular Arbuscular mycorrhiza, fix carbon from plants, plant gets nutes and water uptake

the Hughes Barron system

classification based on mode of Conidiation

Blastic

blowing out, conidium in recognizable prior to septa forming

Thallic

pre-existing cell/ depta fully converted to spore

Blastic-phialidic

phialides dont change length just push out more spores

Blstic retrogressive

as chain of conidia elongate, hphae grow shorter

Thallic arthric

hyphae stops growing than divides

thallic solitart

conidia liberated rhexolytically

Oomycota

water molds, downy, white rust

Hyphochytriomycota

zoospores with anterior tinsel flagellum

Labytinthulomycota

net slime molds

Zoospore

Asexual reproduction, formed from cytoplasmic cleavage.

Primary (Auxiliary) Zoospores

grape shaped both flagella inserted apically

Secondary (principal)

kidney shaped, both flagella inserted laterally.

Kinetosome

microtubule where flagellum formed

Whiplash flagella

smooth

Tinsel or Straminipilous flagella

lots of tripartite tubular hairs (TTHs)

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set