hongos tabla

8/13/2019 Hongos Tabla

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Hongo Microscópicamente Macroscópicamente

Trichophyton

mentagrophyes

Few clavate

microconidia.

Clavate, 3 to 4septate

macroconidia;spherical or clavate

microconidia;spirally coiled

hyphae and nodular

organs which areabortive ascogonia.

The reverse side

may be colorless to brown or reddish

brown.

White floccose

colonies.

Produce urease.

Epidermophyton

flocossum

Widely clavate

macroconidia, withrounded distal ends,

smooth walls, andzero to four cross

walls. NO

microconidia arefound.

Microsporumgypseum

Macroconidia are produced in great

numbers. Broadlyspindle-shaped(although not so

pointed at the distalend as those of

M.canis) with

moderately thickwalls and 4 to 6

septa. Microconidiaare produced

sparsely but



sometimes more

freely in

subcultures afterseveral transfers on

media in thelaboratory.

Microsporum

canis

Many spindle-

shapedmacroconidia. Thewalls are thick and

the external

surfaces are pittedor spinose

(specially near theends of the spores).

The macroconidium

may be divided into

as many as 15 cells by septa, whichmay be diagonally

oriented.

Trichophyton

rubrum

Macroconidia are

tipically long and

narrow and aresparse or lacking

except on enrichedmedia such as heart

infusion tryptoseagar. Microconidia

are clavate, borne

laterally onundifferenciated

hyphae or on

simple lateralconidiosphores.

They may bealmost sessile or on

short stalks.



Trichophyton

tonsurans

Microconidia wich

are clavate but

which vary greatlyin width and size.

They are bornelaterally on

undifferentiated

hyphae or onsimple

conidiophores. Fewmacroconidia are

produced but some

of the larger conidiaresemble

unicellularmacroconidia in

dimensions and

appearance.Contain also

chlamydospores,and in some strains

enlarged or swollenhyphal cells

resulting from

septation andfragmentation of

hyphae resemble

large arthrospores.



Fonsecaea F.pedrosoi forms

elongated conidia

grouped in loose“head” septate

hyphae.

Slow growing

colony, velvety-

woolly, olive-black incolor.

Pseudoallescheria boydii

Septate hyphaewith long or short

conidiophores;

brown cleistothecia

formed in sexualstage.

White, cottonymycelium.

Reverse: white, may

turn gray to black.

Cladosporium

carrionii

Septate hyphae,

branchingconidiophores form

chains of blastoconidia.

Rapid growing,

velvety-cottony,olive-gray brown-

black colony.



Phialophora

verrucosa

Septate hyphae,

flash-shaped

phialides(conidiophores)

with collarettes and balls of

phialoconidia.

Rapid growing,

cottony-woolly

colony, olive black incolor.

Exophiliala jeanselmei

Phialides does notcontain collaretes.;

annelophores are

long with taperedtips. At right angles

from hyphae.

Velvety gray-brownto black mycelium;

background is

yellow-brown.

Blastomycesdermatitidis

Delicate,septatenhyphae and

oval micro-conidia borne singly from

tips of

conidiophores.YEAST: large yeast

with single, broad- based buds.

Fluffy or glabrouswhite to tan colony.

YEAST: whitish-tancolony.



Sporothrix

schenckii

Narrow, septate,

hyphae, and

conidiophores.

Smooth, white to

cream, that with age

becomes brown- black, wrinkled

growth. NO aerialmycelium.

Histoplasma

capsulatum

Septate hyhae,

round micro-conidia and

tuberculate micro-conidia.YEAST: small,

oval, single

budding-yeast cells.

A fluffy white to tan

mycelial colonyYEAST: creamy

convex colonies.

Paracoccidioides brasilensis

Septate branchehyphae with

intercalary andterminal

chlamydoconidia;

few micro-conidiaare sometimes

observer along the

hyphae.YEAST: large thick

walled cellswithsingle and multiple

buddings. The budsare attached to the

Colonies are white,compact, with a nap

of white aerialmycelium that often

turns brown with age.

YEAST: the colonyis heaped, cream to

tan, becoming waxy,

yeast like.



mother cell by a

narrow base

forming thecharacteristic ships

wheel.

Aspergillus niger Double, cover

entire vesicle form

“radiate” head. Variable length,smooth.

Wooly, at first white

to yellow, then

turning dark brown to black.Reverse white to

yellow.

Aspergillus

fumigatus

Single, usually only

on upper half of

vesicle, parallel toaxis stalk.

Velvety or powderly,

at first white, then

turning dark greenish.Reverse white to tan.

Penicillium Terminal brush like

chains ofconidiospores on

sterigmata; septate

hyphae.

White, becoming

gluish-green.



Mucor No rhizoids;

spherical sporangia

have a columellaand arise from non-

septate hyphae.

White, rapidly

growing cottony

colony, later becoming gray to

brown.

Rhizopus Non-septate

hyphae; rhizoidsfrom along a

horizontal runner

(stolon). Long,

unbranchedsporangiphoresarise at nodes

apposite therhizoids; dark

walled sphericalsporangia filled

with spores.

Rapidly growing

white to gray colonywith woolly aerial

mycellium.

Fusarium Produces bothmicro-conidia and

large pointed, sickleform, multicellular

macro-conidia.

Granular or fluffycolony; rose-red,

lavender or red- purple pigment.



Paecilomyces Bronching,

penicillius like

fruting head,termined ends of

phialides are longand tapered.

Usually granular

colonies. Pigment

could be light green,like Penicillium, or

than, or yellow- brown

hongos tabla

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