Fun With Fungi for Teachers and Students.

What you need:
1. A sealable sandwich bag
2. A piece of bread (I used some leftover porkchops, see photo on the right, covered with Pencillium sp.).
3. A paper towel
4. A little soil from outdoors or a potted plant

What you do (Part 1):
1. Place your bread in the bag. Dampen the paper towel and put it in the bag
with the bread and add a pinch of soil. The soil carries a few mold spores.
2. Let some air in the bag and zip it or tie it up so it's securely sealed. Label the
bag with the date and a name for your experiment, say, “Mold Test 1”.
3. Put the bags in a warm, dark place for about three days.
4. Look at the bread with a magnifying glass through the bag. If nothing has
happened after three days, wait three more.
5. Soon you’ll have a mold garden.

Very Important
THROW AWAY BAGS WITHOUT OPENING THEM WHEN FINISHED.
Breathing too much mold can make you sick. In dirt, mold is very spread out.

What’s happening?
Mold is not a kind of plant. Mold is not a kind of animal. Mold is a kind of fungus.
Fungi (FUN-jie) thrive by attaching themselves to a source of food. Famous
fungi include mushrooms, yeasts, mildews, and “athlete’s foot” fungus.
Mold is made up of millions of spores, or tiny microscopic seeds, all growing
together in a colony. Mold comes in a variety of furry, bright-colored blobseverything
from red to bright purple, depending on the type. The fuzzy-looking
spores weigh so little, tiny air currents can carry them through the air. When they
land someplace where the conditions are just right, they grow into new fungi.


Copyright 2001, Bill Nye and Nye Labs, LLC.All rights reserved.

If you thought mold was a problem, check out this list of fungi that will actually eat your home!

Serpula lacrymans
Coniophora puteana
Donkioporia expansa
Antrodia spp.
Antrodia vaillantii
Coprinus spp., 4 species
Tapinella panuoides
Oligoporus spp
Asterostroma cervicolor
Coniophora marmorata
Gloeophyllum spp.
Serpula himantioides
Oligoporus placenta
Antrodia sinuosa
Gloeophyllum sepiarium
Antrodia xantha
Gloeophyllum abietinum
Trechispora spp.
Dacrymyces stillatus
Leucogyrophana pinastri
Phanerochaete spp.
Phellinus contiguus
Trechispora farinacea
Grandinia spp.
Hyphoderma spp.
Hyphodontia spp.
Diplomitoporus lindbladii
Gloeophyllum trabeum
Leucogyrophana pulverulenta
Lentinus lepideus
Leucogyrophana mollusca
Resinicium bicolor
Trechispora mollusca
Antrodia serialis
Cerinomyces pallidus
Coniophora arida
Cylindrobasidium laeve
Fomitopsis rosea
Hyphoderma praetermissum
Leucogyrophana spp
Pleurotus cornucopiae
Pleurotus ostreatus
Pluteus cervinus
Tomentella sp.
Trametes hirsuta
Antrodia gossypium
Antrodia malicola
Asterostroma laxum
Bjerkandera adusta
Botryobasidium spp.
Crepidotus spp
Fomitopsis pinicola
Grifola frondosa
Heterobasidion annosum
Hyphodontia alutaria
Hyphodontia breviseta
Hyphodontia floccosa
Hyphodontia nespori
Leccinum sp.
Merulius tremellosus
Oligoporus rennyi
Phellinus pini
Pleurotus pulmonarius
Radulomyces confluens
Ramariopsis kunzei
Schizophyllum commune
Schizopora paradoxa
Stereum rugosum
Trametes ochracea
Trametes versicolor
Trechispora invisitata
Trichaptum abietinum
Tubaria furfuracea
Volvariella bombycina
Coprinus domesticus
Dacrymyces tortus
Daedalea quercina
Ditiola radicata
Fomes fomentarius
Hyphoderma puberum
Hypochniciellum molle
Hypholoma fasciculare
Laetiporus sulphureus
Oligoporus caesius
Perenniporia medulla-panis
Phellinus nigrolimitatus
Phlebiopsis gigantea
Physisporinus vitreus
Sistotrema brinkmannii

Orginal Research Citation:
Olaf Schmidt, 2007. Indoor wood-decay basidiomycetes: damage, causal fungi, physiology, identification and characterization, prevention and control. Mycol Progress 6:261–279

Tougher, Stronger, Deadlier E.coli strains Found

NEW YORK (GenomeWeb News) – A particularly severe form of human infection is being linked to a subset of Escherichia coli O157:H7 strains, based on a new phylogenetic analysis of the bug. In the study, published online last night in the Proceedings of the National Academy of Sciences, researchers at Michigan State University and elsewhere used phylogenetics to organize several hundred clinically relevant E. coli O157 strains into nine clades. As it turned out, many of the strains isolated from people with the most serious E. coli O157-related disease clustered in just one of these clades: clade eight, which seems to be more prevalent in recent years.

First recognized in the early 1980s, EHEC outbreaks have been linked to a variety of food sources including undercooked ground beef, alfalfa, spinach, unpasteurized fruit juice, salami, wild game meat, and raw milk. The bacteria’s toxins can cause hemorrhagic colitis, which is characterized by abdominal pain, bloody diarrhea, and sometimes vomiting. Young children and the elderly are often hit hardest by the bug. In some cases, infected individuals develop hemolytic uremic syndrome, which can result in kidney failure, seizures, strokes, and other serious complications.

Is Your Home Making You Sick?

NEW YORK (Ivanhoe Broadcast News) -- You may have heard of toxic mold and sick building syndrome. Could your home also make you sick?
The Environmental Protection Agency estimates indoor air quality is two- to five-times more polluted than the air we breathe outside.
"Living in a home that is polluted with mold can cause all sorts of respiratory problems," Neil Schachter, M.D., tells Ivanhoe. That's a great concern to homeowner Scott Lerman, who has a 4-year-old child.
"We want to make sure that our house is as healthy as it can be so that my son can be as healthy as he can be," says Lerman, who agreed to let Dr. Schachter, a lung specialist from Mount Sinai School of Medicine in New York City, inspect his home.
During the inspection, Dr. Schachter found water damage was causing mold to grow in Lerman's shower. He advises the Lermans and anyone with a similar problem to clean moldy showers with chlorinated wipes and avoid spraying any chemicals that might irritate the lungs.
Because dust can also cause respiratory problems like allergies and asthma, Dr. Schachter recommends putting clean area rugs over dusty carpets and getting rid of dust ruffles. He also says not to store items beneath the bed and to be aware that clutter stored in the basement can collect dust. Pollutants can also come from outside, so to keep them out, Dr. Schachter suggests installing a window filter.
"You assume your house is healthy until you get someone to point these things out," says Lerman, who is now committed to eliminating more than just dust in an effort to keep his family healthy.

Clean Up That Moldy Mess

A musty, mildewy smell is the undeniable odor of mold. And it may be lurking in more places than you know -- having harmful effects on your health. Now, we tell you how to track down mold.

Holly Russo's tub comes clean now, but there was once a moldy nightmare lurking underneath it. "Our first reaction, when we saw the mold, was absolute horror. I could not believe what was under there. I've never seen anything like it," says Russo.

Mold that's made its way indoors can cause health problems, but many people still don't understand the hazards. Now, industrial hygienists are growing mold to learn more about how it grows, what it grows on, and how mold makes us sick.

"I want to know what makes up that moldy, musty smell. I want to know are there compounds there that can cause people to have health problems," says Terri Pearce, Ph.D., an industrial hygienist for The Centers for Disease Control's National Institute for Occupational Safety and Health (NIOSH).

In a lab, with the perfect blend of moisture and warmth, mold spores, or tiny cells, grow on different types of building materials. With the right amount of moisture, mold can grow faster, turning an ordinary ceiling tile into moldy messes.

Researchers learn which materials withstand mold better -- and which moldy smells come from mold that may cause more serious health problems. "Some of the chemicals that make up that odor actually are known to be irritants and so they can cause people to have respiratory health affects," explains Dr. Pearce.

Learning more about mold helps researchers develop better ways to find it, treat health problems, like asthma and allergies, and teach how vital it is to clean up moldy messes.

Airborne Mold Spores Increase Kids' Risk For Multiple Allergies

University of Cincinnati researchers say exposure to a certain group of fungal spores -- abundant in the air that we breathe every day -- can make young children more susceptible to developing multiple allergies later in life. The team found that infants who were exposed to basidiospores and other airborne fungal spores -- specifically Penicillium/Aspergillus and Alternaria -- early in life were more likely to develop allergies to mold, pollen, dust mites, pet dander and certain foods as they grew older.

Household Mold Linked To Depression

A groundbreaking public health study has found a connection between damp, moldy homes and depression. The scientists said the findings came as a complete surprise. This was a large study, analyzing data from 5,882 adults in 2,982 households. Molds are toxins, and some research has indicated that these toxins can affect the nervous system or the immune system or impede the function of the frontal cortex, the part of the brain that plays a part in impulse control, memory, problem solving, sexual behavior, socialization and spontaneity.

Moving Ahead With Guidelines To Control Indoor Mold Contamination

Amid growing public concern about mold contamination of homes and its associated health effects, a new study is recommending policy approaches for controlling mold in homes that could be used on local and nationwide bases

The study, done by Felicia Wu, Tom Biksey, and Meryl H. Karol compares policies for regulation of mold with those previously developed to regulate two other contaminants in the indoor environment, radon and lead. While federal, state, and local agencies have policies and regulations concerning radon and lead, few state or local policies have been developed for mold and no federal agency has Congressional authority to regulate or develop indoor mold policy, the study points out.

Based on lessons from radon and lead, the researchers recommend policy approaches for controlling indoor mold that rely on building and housing codes, maintenance and rehabilitation regulations, home marketing incentives, and public education on moisture and mold control.

“While it is not yet feasible to develop standards and regulations for acceptable mold levels in the home, guidelines and policies can be developed at the federal, state, and local levels to control moisture and mold in homes,” the report states।

American Chemical Society (2007, July 5). Moving Ahead With Guidelines To Control Indoor Mold Contamination. ScienceDaily.

Urticaria

Urticaria or hives is a relatively common form of allergic reaction that causes raised red skin welts. Urticaria is also known as nettle rash or uredo. These welts can be 5 mm (0.2 inches) in diameter or more, itch severely, and often have a pale border. Urticaria is generally caused by direct contact with an allergenic substance, or an immune response to food or some other allergen.

House dust mite

The house dust mite is a cosmopolitan guest in human habitation. Mites belong to the order same as spiders, and have existed for longer than insects. Dust mites flourish in the controlled environment provided to them by buildings. In nature they are killed by predators and by exposure to direct sun rays. Dust mites are considered to be the most common cause of asthma and allergic symptoms worldwide. The enzymes they produce can be smelled most strongly in full vacuum cleaner bags.

It is just possible to see a dust mite under a magnifying glass, when the subject is well lit and placed on a black background.

Bleach and strong soaps do not kill dust mites.

A simple washing will remove most, in the waste water.

Temperatures of over 60 degrees Celsius (140 degrees Fahrenheit) for a period of one hour are usually fatal to dust mites; freezing may also be fatal.

Dust mites reproduce quickly enough that their effect on human health can be significant।

Are Your Dishes Clean? -- What Kills E Coli and Salmonella Bacteria?

Food scientists at The Ohio State University wanted to see if cooler water could kill bacteria on dirty dishes like E. coli and salmonella. The study found that even when dishes were washed in cooler temperatures, it still cleaned enough bacteria away to levels accepted in the food and drug administration's food code.

Can Your Home Trigger Asthma? -- Environmental Toxicologists Link Household Bacteria to Asthma

Scientists have found that chemicals called endotoxins can inflame airways and trigger asthma. Endotoxins are shed by bacteria in household dust. Experts say better home hygiene, washing bed linens in hot water at least once a week, and using allergen-prevention pillow cases and mattress covers can reduce the risk of asthma attacks.

Increased Allergen Levels In Homes Linked To Asthma

Results from a new national survey demonstrate that elevated allergen levels in the home are associated with asthma symptoms in allergic individuals. The study suggests that asthmatics that have allergies may alleviate symptoms by reducing allergen exposures inside their homes. Asthma is one of the most common chronic ailments in the United States, affecting more than 22 million people. Asthma has been shown to be triggered by a wide range of substances called allergens.