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Flashcards in 3. The Opportunistic Molds Deck (51):
1

Common spp. of Acremonium

Acremonium falciforme
Acremonium kiliense

2

Macroscopic:

Rapid grower
White, cottony colonies

Acremonium spp.

3

Microscopic: hyaline, septate hyphae

Acremonium spp.

4

Microscopic: unbranched, solitary, erect phialides formed directly on the hyphal tips

Acremonium spp.

5

Microscopic: conidia usually in clusters or fragile chains

Acremonium spp.

6

Drugs for Acremonium spp. that exhibit good in vitro activity

Newer azoles (voriconazole, posaconazole)

7

Drug for Acremonium spp. with higher MIC than voriconazole

Itraconazole

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Drug for Acremonium spp. with a relatively low MIC

Caspofungin

9

Normal mycoflora of commodities (rice)

Fusarium

10

Medically important Fusarium spp.

Fusarium oxysporum
Fusarium chlamydosporum
Fusarium solani

OCS

11

Disease caused by Fusarium spp.

Fusariosis

12

Macroscopic:

Rapid grower
Woolly to cottony
Flat
Spreading

Fusarium spp.

13

Microscopic:

Macroconidia - 2 or more cells , thick walled, smooth, cylindrical or sickle (canoe) shaped

Fusarium spp.

14

Common Geotrichum spp.

Geotrichum candidum
Geotrichum fici
Geotrichum clavatum

15

Macroscopic:

- Rapid growing
- White, dry
- Powdery to cottony colonies resembling ground glass

Geotrichum spp.

16

Macroscopic: colony may be yeastlike

Geotrichum spp.

17

Optimal growth temp of Geotrichum spp.

25°C

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Microscopic: has Arthroconidia that is either rectangular or rounded at the ends

Geotrichum spp.

19

Microscopic: coarse true hyphae observed, may be undifferentiated

Geotrichum spp.

20

Most common Paecilomyces spp.

Paecilomyces lilacinus
Paecilomyces variotii

21

May resemble Penicillium spp. macroscopically and microscopically

Paecilomyces spp.

22

Macroscopic:

Rapid grower
Flat, powdery, velvety

Paecilomyces spp.

23

Thermophilic Paecilomyces spp.

P. variotii

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Microscopic:

- Septate, hyaline hyphae
- Branched conidiophore
- Phialides swollen at the base and taper toward the apex

Paecilomyces spp.

25

Microscopic: usually grouped in pairs or brushlike clusters

Paecilomyces spp.

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Microscopic: conidia are unicellular, hyaline to darkly colored, and form long chains

Paecilomyces spp.

27

Thermal dimorph Penicillium spp.

Penicillium marneffei

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More common Penicillium spp.

Penicillium chrysogenum
Penicillium citrinum

29

Fungi particularly virulent in patients with AIDS

Penicillium spp.

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Macrosopic:

Rapid growing
Velvety, woolly, cottony

Penicillium spp.

31

Microscopic:

Flask-shaped phialides

Penicillium spp.

32

Microscopic:

Form brushlike clusters

Penicillium spp.

33

Microscopic:

Conidia are round, unicellular, form unbranching chains at the tips of phialides

Penicillium spp,

34

Contains both hyaline and dematiaceous fungi species

Scopulariopsis spp.

35

Common Scopulariopsis spp.

Scopulariopsis brevicaulis (hyaline)
Scopulariopsis cinerea (dematiaceous)

36

Causes onychomycosis on the toe nails

Scopulariopsis spp.

37

Macroscopic:

Grows moderately rapidly
Granular to powdery

Scopulariopsis spp.

38

Microscopic:

- Septate hyphae
- Conidiophores are hyphae-like and simple or branched

Scopulariopsis spp.

39

Enumerate the most and less common Aspergillus spp.

Most common:
A. fumigatus
A. flavus
A. niger

Less common:
A. clavatus
A. glaucus
A. nidulans

40

3 clinical settings for Aspergillosis

Toxin production
Allergic states
Opportunistic infections

41

Allergic reaction caused by Aspergillus spp.

Allergic bronchopulmonary aspergillosis

42

Toxin produced by Aspergillus spp.

Aflatoxin

43

Macroscopic:

Rapid grower (matures in 3 days)

Apergillus spp.

44

How many days will Aspergillus spp. mature?

3 days

45

Aspergillus spp. that grows well at 45°C

A. fumigatus

46

Optimal growth temp of A. fumigatus

45°C

47

Microscopic:

- Septate hyphae
- Unbranched conidiophore from a "foot cell"

Aspergillus spp.

48

Microscopic:

Phialides cover the surface of the vesicle entirely ("radiate" head) or partially only at the upper surface ("columnar" head)

Aspergillus spp.

49

Microscopic:

Phialides are either uniseriate (attached to the vescile directly) or biseriate (attached to the vesicle via a supporting cell) metula

Aspergillus spp.

50

Microscopic: conidia from radial chains

Aspergillus spp.

51

Filamentous fungus in plant debris and soil

Acremonium spp.