As P.
chrysogenum belongs to the most mysterious, unfamiliar kingdom
(the fungi), it is not surprising that little is commonly known
about the organism.
Thus, I have included in my webpage some general information
which may come in use some day. For
example, you may find yourself standing face to face with Alex
Trebek, a mixture of sweat and adrenaline taking over your body, and
he asks a question on the common habitat of Penicillium
chrysogenum. The
choice is yours: read on and win your wager or stop now and let the
overly intelligent, socially lacking boy who’s half your age win the
game.
Structure:
Like most members of the Penicillium genus, P. chrysogenum
is a filamentous fungus.
It usually sports a wooly to cotton-like appearance which
starts out as a whitish color and over time changes to different
shades of blue/green, yellow, pink or grey.
Habitat/Adaptation:
Because P. chrysogenum is a heterotrophic
organism, it does not depend on light to survive.
This characteristic allows the organism to live in multiple
habitats. Thus, P. chrysogenum is less likely to adapt to its
environment, but instead flourish in an environment which is adapted
to it.
Penicillium
species are found in a variety of niches. However, they prefer areas which are dark and damp.
Moist conditions are favored
among most fungi to avoid drying out.
This is a common problem
fungi face because they like to have maximum surface area to
increase the amount of nutrition they can ingest. Wind is a large help in spreading the reproductive spores of
P. chrysogenum. Thus, it is most common to find the fungus in
temperate areas.
Common natural habitats of P. chrysogenum include soil,
decaying vegetation, cultivated land, and temperate forest areas. You may also encounter P. chrysogenum in your own
household in moist areas such as the bathroom, refrigerator, or
window sills. Other
fungi which you may find in these same regions include:
Penicillium
fumiculosum
which is used in antibiotics and
Pencilium expansum
which causes the soft spots on apples.
Nutrition:
Do you ever wonder what happens to your banana
peel when you throw it out the car window?
Or, why a forest floor isn’t forever covered in leaves after
the fall season?
Using
digestive enzymes (called exoenzymes) fungi can break down almost
all man made and naturally occurring materials, P. chrysogenum
is no exception. The process which fungi break down complex
nutrients into more simple carbon compounds is extremely
interesting.
It is a
process of first externally digesting nutrients followed by the
ingestion of them.
After P. chrysogenum ingests the nutrients, the nutrients are
spread throughout the vegetative body called the hyphae.
Any unused nutrients are stored unused as glycogen.
This is similar to the way animals store their foods. You can
learn more about this process and the different symbiotic
relationships of fungi
here.
Symbiosis:
As described above, P. chrysogenum is known
to derive much of its nutrition from decaying vegetation or from a
parasitic relationship with other organisms seen as allergens.
In this specific parasitic relationship humans often serve as
the host. A second way
fungi receive nutrients is through forming lichen.
Lichen is a mutualistic relationship which includes both a
fungi (usually from the phylum ascomycota) and an algae or
cyanobacteria. Based on
the lineage of P. chrysogenum it is generally assumed that it
has evolved from the lichen-forming fungi.
Classification