| |
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Emericella sp.: The sexual states of Aspergillus
species, notably the Aspergillus nidulans group
among others. Emericella is common and is most
closely related to Eurotium, another genus with
Aspergillus anamorphs. Emericella is likely to
be present along with related Aspergilli if growth
has been long term and the nutrients of the substrate
are conducive for the conversion to sexual phase.
Health effects, allergenicity, and toxicity are
closely related to the Aspergillus anamorph and
for the most part, have not been studied apart
from that primary phase. May be identified on
surfaces by tape lifts, tease mounts from bulk
samples and in air on spore trap samples. Spores
have distinctive morphology. If Emericella spores
are isolated on culturable (Anderson) sampling,
the Aspergillus anamorph is likely to be the identifiable
result, at least with primary growth within one
week. Natural habitat includes soil, seeds, and
vegetable matter.
Emericellopsis sp.: The sexual states of Acremonium
species. Emericellopsis is most closely related
to Eurotium and Emericella, other genera forming
cleistothecia (closed, round sexual fruiting bodies).
No information is available regarding health effects
or toxicity. May be identified on surfaces by
tape lifts, tease mounts from bulk samples and
in air on spore trap samples. Spores have distinctive
morphology. If Emericellopsis spores are isolated
on culturable (Anderson) sampling, the Acremonium
anamorph is likely to be the identifiable result,
at least with primary growth within one week.
Natural habitat is soil.
Engyodontium sp.: common but comprise a small
proportion of the fungal biota. This very delicate
genus is related to Beauveria and Tritirachium.
Health effects of Engyodontium album include reports
of keratitis, brain abscess, eczema vesiculosum,
and native valve endocarditis. No information
is available regarding toxicity and allergenicity
has not been studied. Identified in air by culturable
sampling. Spores are not distinctive on spore
trap samples and are categorized as “other
colorless”. Fresh growth is possibly identifiable
on tape lifts, but optical resolution through
tape is sometimes inadequate for the very small
structures of Engyodontium. Commonly isolated
from paper, jute, textiles, and painted walls.
Epicoccum sp.: Contaminant. Opportunistic pathogen.
Found in soil, air, water and rotting vegetation.
Associated with skin allergies.
return to top
Erysiphe sp.: Plant pathogens, one of the genera
causing powdery mildew. Erysiphe is very common
and is an obligate parasite on leaves, stems,
flowers, and fruits of living higher plants. No
information is available regarding health effects
or toxicity. Allergenicity has not been studied.
The asexual phase of Oidium have distinctive morphology
and may be identified in air on spore trap samples,
although because obligate parasites cannot grow
on non-living environmental surfaces, our laboratory
does not include Erysiphe on our spore trap report
form. The asexual spores are also seen in dust
as part of the normal influx of outdoor microbial
particles.
Eurotium sp.: The sexual states of Aspergillus
species, notably the Aspergillus glaucus group
among others. Eurotium is common and is most closely
related to Emericella, another genus with Aspergillus
anamorphs. Eurotium is likely to be present along
with related Aspergilli if growth has been long
term and the nutrients of the substrate are conducive
for the conversion to sexual phase. Health effects,
allergenicity, and toxicity are closely related
to the Aspergillus anamorph and for the most part,
have not been studied apart from that primary
phase. May be identified on surfaces by tape lifts,
tease mounts from bulk samples and in air on spore
trap samples. Spores have distinctive morphology.
If Eurotium spores are isolated on culturable
(Anderson) sampling, the Aspergillus anamorph
is likely to be the identifiable result, at least
with primary growth within one week. Occurs on
substrates low in moisture (Xerophilic); very
common in stored seeds, grows also on textiles,
leather, and materials coated with resins and
lacquers, such as furniture.
Exophiala sp.: Common and are closely related
to Wangiella and Phialophora. On primary isolation,
this genus may exhibit a black yeast phase, making
identification a little more complex. Health effects
include occasional mycetomas, chromoblastomycosis,
and other subcutaneous lesions. No information
is available regarding toxicity. May be identified
on surfaces by tape lifts, tease mounts from bulk
samples and in air by culturable sampling. Spores
do not have a distinctive morphology and would
be categorized as “other colorless”
on spore trap samples. Widespread distribution
in decaying wood, soil, and water (especially
surfaces in contact with cool, fresh water).
Exserohilum sp.: Common and are most closely
related to Drechslera and Bipolaris. Exserohilum
spores have an inner cup-like structure, which
is visible in the basal cell.
return to top
|
|
