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MYCOVIRO > UNIT 6 OPPORTUNISTIC > Flashcards

UNIT 6 OPPORTUNISTIC Flashcards

1
Q

rare human isolate,
uncommonly associated with keratitis.

A

BEAUVERIA

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2
Q
  1. Beauveria
  2. Crhysosporium
  3. Fusarium
  4. Geotrionum
  5. Purpureocillum
  6. Scopulariosis
  7. Trichoderma
A

SEPTATE AND HYALINE

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3
Q

This fungus is a known insect pathogen
Found worldwide on vegatative and in soil.

A

Beauveria

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4
Q

Abundant, single-celled, tear-shaped
sympoduloconidia are formed on sympodulae

Conidiophores
○ May cluster in sole isolates to form radial
tufts

A

Beauveria

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5
Q

Hyaline, moderately rapidly growing
● Fluffy colonies and sometimes developing a powdery

A

Beauveria

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6
Q

have
been recovered from nails and skin lesions.

A

Chrysosporium

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7
Q

pneumonia and osteomyelitis in immunocompromised
patients.

A

Chrysosporium zonatum

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8
Q

Simple, wide-based, single-cell are produced on
non-specialized cells
● Conidiogenous cells disintegrate or break to release
Conidia.
● Both arthroconidia and aleuria conidia may be seen.

A

Chryosporium

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9
Q

Hyaline with a moderate growth rate with age can
develop
● light shades of pink, gray, or tan pigment

A

Chryosporium

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10
Q

frequently seen in mycotic keratitis.

Contact lenses

A

Fusarium

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11
Q

In bone marrow transplant recipients with infections
caused by fusaria, the mortality rate approaches 100%

A

Fusarium

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12
Q

Abundant; produces on vegetative hyphae
○ Banana or canoe shaped ; multi celled
○ Formed singly, small clusters or clustered
together in mats termed sporodochia.

A

Fusarium

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13
Q

Fusarium is a rapidly growing hyaline fungus that can
develop various colors with age, ranging from rose to
mauve to purple to yellow

A

Fusarium

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14
Q

pulmonary
diseases in immunocompromised patients.

A

Geotrichum

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15
Q

Arthroconidia
○ Abundant; formed from vegatative hyphae
○ Occurs singly or may be branched

White to cream and yeastlike

A

Geotrichum

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16
Q

Confused with Trichosporon spp.

A

Geotrichum

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17
Q

cutaneous and
subcutaneous infections

A

Purpureocillium

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18
Q

Can be mistaken for Penicillium spp.

A

Purpureocillum

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19
Q

Can be mistaken for Penicillium spp.

A

Purpureocillum

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20
Q

generally longer and more
obviously tapered
■ may be singly formed or arranged
in a verticillate pattern
■ Long chains of spindle-shaped or
somewhat cylindric conidia are
formed

A

Phialises of purpureocillum

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21
Q

Grow rapidly
● Flat , granular to velvety colonies
● Shade of tan, brownish gold or mauve
● Green or blue-green colors are not seen

A

Purpureocillum

Green trichoderma

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22
Q

nail
specimens and have been implicated in pulmonary
disease in immunocompromised patients.

A

Scopulariopsis spp

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23
Q

Conidiospores
● Conidia
○ Occur singularly or can be in clusters
○ Formed from annelides which increase in
length as conidia
○ Truncate–based conidia tend to remain in
chains on the annelides

A

Scopulariopsis

24
Q

Pulmonary and skin infections in
immunocompromised hosts.

A

Trichoderma spo

25
Q

Rapidly growing and form hyaline hyphae
that give rise to yellow-green to green
patches of conidia formed on cluster of
tapering phialides
○ Remain clustered in balls at the phialides tips

A

Trichoderma

26
Q
  1. Alternaria
  2. Auerobasidium
  3. Chaetomium
  4. Cladosporium
  5. Curvularia
  6. Phoma
  7. Pithomycus
  8. Ulocladium
A

SEPTATE AND PHAEOID

27
Q

Rhpdotorula spp.

A

AGENTS OF YEAST

28
Q

chronic fungal
sinusitis

A

Alternaria

29
Q

Are found worldwide on grasses and
leaves.
● It has been implicated in tomato rot and are readily
recovered from the environment in air-setting plates.

A

Alternaria

30
Q

Short conidiophores bearing conidia in chain
that lengthen in an acropetal fashion
○ Multicelled conidia have angular cross walls
and taper toward the distal end

A

Alternaria

31
Q

contaminated dialysis lines, catheters and similar
devices.

A

Auerobasidium

32
Q

recovered from blood, tissues and abscesses.

A

Aureobasidium

33
Q

Recovered worldwide primarily in wet environments
such as from shower tiles and water lines.

A

Aureobasidium

34
Q

Arthroconidia are responsible for the
darkening colony morphology

A

Aureo

35
Q

reported in the brains of patients with CNS disease.
● Several of these patients have been identified as

intravenous drug abusers.

● Found in the environment and have a predilection for
cellulose products.

A

Chaetomium

36
Q

Known to devastate printed literature and library
holdings
● associated with problems in indoor air quality.

A

Chaetomium

37
Q

Pineapple shaped and ornamented with
straight or curled hairs or setae.

A

Chaetomium and curvularia

38
Q

Numerous perithecia
○ Pineapple shaped and ornamented with
straight or curled hairs or setae.
○ Asci contained within the perithecia are
evanescent

A

Chaetomium

39
Q

At maturity, the pigmented,
lemon-shaped ascospores are
released within the perithecium

A

Chaetomium

40
Q

Dirty gray and become phaeoid with age

A

Chaetomium

41
Q

are primarily recovered as
laboratory contaminants.

A

Cladosporium

42
Q

typically confined to sinuses or
following traumatic inoculation.
● Ubiquitous in nature and this isolate can be recovered
from almost any location in the world.

A

Clado

43
Q

Erect and can branch into several
conidiogenous cells
○ Spherical to ovoid conidia form blastically on
the end of each previously formed conidium

A

CLADO

44
Q

Branched conidium-bearing cells may dislodge and
the three scars on each of these cells give them the
appearance of shield.

A

Clado

45
Q

Slowly to moderately growing phaeoid fungi
● Granular velvety to fluffy
● Olive to brown or black

A

Clado

46
Q

chronic sinusitis in immunocompetent patients.

A

Curvularia

47
Q

Multicelled that produced on sympodial
conidiophores

A

Curvularia

48
Q

Easiest to identify because of the frequently
seen crescent-shaped conidia with three to
five cells of unequal size and an enlarged
central cell.

A

Curvularia

49
Q

Rapidly growing phaeoid colony
● Cottony and dirty
● Gray to black

A

Curvularia

50
Q

usually secondary
to traumatic inoculation.

A

PHOMA AND PITHOMYCES

51
Q

Appear as black fruiting bodies that are
globose and lined inside with short
conidiophore

A

Pycnidia of phoma

52
Q

Large numbers of hyaline conidia are generated in
pycnidium and flow out of a small apical pore.

A

Phoma

53
Q

Somewhat barrel shaped
○ Formed singly on simple short condiophores

A

Pithomyces

54
Q

sometimes implicated in
subcutaneous infections, usually following traumatic
inoculation

A

Ulocladium

55
Q

Conidiophore
○ Dark, multicelled conidia on sympodial
conidiophore

A

Ulocladium

56
Q

Conidia
○ Angular cross-walls
○ In some species, echinulate surface

A

Ulocladium

57
Q

bright salmon pink
color.
● They resemble the cryptococci because they bear a
capsule and urease positive (+)
● Some species are also nitrate positive (+)

A

Rhpdptorula

MYCOVIRO (9 decks)

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