mycoviro prelim lesson 1

Bassi

Beauveria bassiana

Who studied the Muscardine disease and what fungus caused it?

Raymond Sabouraud

Les Teignes

Father of medical mycology

What is the Name of the book published entitled “Comprehensive study of dermatophytic fungi

Fungi

Major cause of plant diseases?

Saprobes

Organisms that live on dead or decaying organic matter

Symbionts

organisms that live together in which the association is of mutual advantage

Commensals

two organisms living in a close relationship in w/c one benefits by the relationship & the other neither benefits nor is harmed

Parasites

organisms that live on or within a host

from which they derive benefits w/o making any useful contributions in return (ex. pathogenic fungi)

Candidiasis and Tinea versicolor

all fungal infections come from outside the body, usually through inhaling spores or through cuts or injuries. Except?

Thallophytes

Fungi are often referred to as what? Which means organisms with a simple, undifferentiated body

Chitin

Ergosterol & symosterol (contains cholesterol)

Fungal Cell wall is primarily consist of ?

Fungal cell membrane contains?

Yeast

Mold

2 types of fungi

Yeast

Grow as single cells that reproduce by asexual budding

Mold

grow as long filaments (hyphae) & form a mat (mycelium)

Thermally dimorphic fungi

It means they change their form depending on the temperature

Mold form

Yeast form

Ambient temperature (~25•C) = _____

Body temperature (~37•C) = _____

Thallus

a plantlike vegetative body (as of algae, fungi, or mosses) that lacks differentiation into distinct parts (such as stem, leaves, and roots) and does not grow from an apical point.

Hyphae

filaments or threadlike fungal structures

Septate hyphae and nonseptate

2 types of hyphae

nonseptate hyphae

doesn't form a transverse wall & are multinucleated (coencytic)

Septate hyphae

hyphae - when hyphae form transverse walls

Mycelia

mass or group of countless

intertwined hyphae

Aerial mycelium

Vegetative mycelium

Fertile mycelium

3 types of mycelia

Aerial mycelium

that part of the growth that projects above the surface of the substrate & produce the spores

Vegetative mycelium

that part of the growth that penetrates the substrate & absorbs food

Fertile mycelium

are aerial hyphae that bear. reproductive structures such as conidia or sporangia.

Spiral hyphae

Trichophyton mentagrophytes

A type of specialized structure or appearance of hyphae that are spirally coiled hyphae commonly seen in what fungi?

Pectinate body

Microsporum auduoinii

A type of specialized structure or appearance of hyphae That is short, unilateral projections that resembles broken comb and commonly seen in what fungi?

Favoc chandelier

Trichophyton schoenleinii and Trichophyton violaceum

These are the group of hyphal tips that collectively resemble a chandelier or the antlers of the deer (antler hyphae). They occur in ?

Nodular organ

Trichophyton mentagrophytes and Microsporum canis

This is an enlargement in the mycelium that consists of closely twisted hyphae. Often seen in?

Racquet hyphae

Epidermophyton floccosum and trichophyton mentagrophytes

There is regular enlargement of one end of each segment with the opposing end remaining thin. Seen in

Rhizoides

These are the root like structures seen in portions of vegetative hyphae in some members of zygomycetes.

Candida albicans

Fungus that is part of the normal human flora, especially in the mouth, gut, and genital tract. It can cause infection when conditions become favorable (e.g., weakened immunity, antibiotics use).

Spores

Structures that is set aside for reproduction?

Fungi imperfecti

Perfect fungi = Form sexual phase

Imperfect fungi = Don’t form sexual spores

Imperfect are classified as?