Airborne Fungal Spores at Lumber Seasoning Yards in the Lower Ottawa Valley

1974 ◽  
Vol 4 (3) ◽  
pp. 301-307 ◽  
Author(s):  
H. H. Ünligil ◽  
M. S. H. Shih ◽  
J. K. Shields
Keyword(s):  
Laboratory Tests ◽  
Agar Medium ◽  
Fungal Spores ◽  
White Birch ◽  
Softwood Lumber ◽  
Hardwood Lumber ◽  
Airborne Fungal Spores ◽  
Alternaria Sp ◽  
Petri Dishes ◽  
Penicillium Spp

Airborne fungal spores were trapped at three lumber storage locations in the lower Ottawa Valley by exposing petri dishes containing malt agar medium. The fungal colonies developing were counted and identified. Highest counts from morning exposures were obtained at Braeside in June, at Ottawa in July, and at Thurso in September. Afternoon exposures, made only in Ottawa, yielded generally higher counts than morning exposures. While dark colonies predominated at Ottawa and Braeside sites, where mainly softwood lumber was stored, hyaline and white colonies prevailed at the hardwood lumber yard at Thurso. The three most common fungi at the Ottawa and Braeside locations were Alternaria spp., Aureobasidiumpullulons, and Penicillium spp. At the Thurso site, Alternaria spp., Trichodermaviride, and Penicilliumspp. were most numerous. A Cladosporium sp., a Graphium sp., and an Alternaria sp., caused considerable staining on the surface of white birch blocks in laboratory tests.

Disinfection of selected Aspergillus spp. using ultraviolet germicidal irradiation

2004 ◽  
Vol 50 (3) ◽  
pp. 221-224 ◽  
Author(s):  
Christopher F Green ◽  
Pasquale V Scarpino ◽  
Paul Jensen ◽  
Nancy J Jensen ◽  
Shawn G Gibbs
Keyword(s):  
Aspergillus Fumigatus ◽  
Aspergillus Flavus ◽  
Fungal Spores ◽  
Petri Dish ◽  
Testing Unit ◽  
Ultraviolet Germicidal Irradiation ◽  
Airborne Fungal Spores ◽  
Agar Surface ◽  
Petri Dishes ◽  
Higher Doses

Aims: The efficacy of ultraviolet germicidal irradiation (UVGI) and the UVGI dose necessary to inactivate fungal spores on an agar surface for cultures of Aspergillus flavus and Aspergillus fumigatus were determined. Methods and results: A four-chambered UVGI testing unit with a 9-W, Phillips, low pressure, mercury UVGI lamp in each chamber was used in this study. An aperture was adjusted to provide 50, 100, 150, and 200 µW/cm2 of uniform flux to the surfaces of the Petri dish, resulting in a total UVGI dose to the surface of the Petri dishes ranging from 12 to 96 mJ/cm2. The UVGI dose necessary to inactivate 90% of the A. flavus and A. fumigatus was 35 and 54 mJ/cm2, respectively. Conclusions: UVGI can be used to inactivate culturable fungal spores. Aspergillus flavus was more susceptible than A. fumigatus to UVGI. Significance and impact of the study: These results may not be directly correlated to the effect of UVGI on airborne fungal spores, but they indicate that current technology may not be efficacious as a supplement to ventilation unless it can provide higher doses of UVGI to kill spores traveling through the irradiated zone.Key words: Aspergillus, ultraviolet germicidal irradiation, fungi.

scholarly journals Incidence of post-harvest disease and airborne fungal spores in a vegetable market

2012 ◽  
Vol 71 (1) ◽  
pp. 147-157 ◽  
Author(s):  
Umesh Kakde ◽  
Hemalata Kakde
Keyword(s):  
Fungal Spores ◽  
Pathogenic Fungi ◽  
Fungal Spore ◽  
Fungal Species ◽  
Post Harvest ◽  
Cladosporium Herbarum ◽  
Rotorod Sampler ◽  
Airborne Fungal Spores ◽  
Penicillium Spp ◽  
Post Harvest Disease

Incidence of post-harvest disease and airborne fungal spores in a vegetable marketThe sampling of bioaerosols has been carried out using a Rotorod sampler as well as by exposing culture plates. The screening of some common vegetables was also done for the isolation of fungi as market pathogens to study post-harvest diseases. Altogether, fifty nine fungal spore types and 78 species of 33 genera belonging to different groups were recorded respectively on the rotorod strips and on exposed Petri dishes. Many saprophytic and pathogenic fungi were found to be associated with sampled vegetables from the market. In all forty-six fungal species belonging to 26 genera were recovered from five varieties of vegetables collected from the samemarket. The most dominant forms of fungi were ofAspergillusfollowed byCladosporium, Penicillium, Alternaria, Fusarium, Curvularia, Trichoderma, andRhizopus. Aspergillus niger, A.flavus, A. fumigatus, Penicillium spp.andCladosporium herbarum, found to be dominant during the period of investigation. Important mycotoxin-producing fungi such asA. flavus, A. fumigatusandFusarium moniliformewere isolated from the vegetables collected from the market.

Airborne fungal spores in a sawmill environment in Palakkad District, Kerala, India

Aerobiologia ◽  
2004 ◽  
Vol 20 (1) ◽  
pp. 75-81 ◽  
Author(s):  
Padmanabhan S. Jothish ◽  
Themath Soman Nayar
Keyword(s):  
Fungal Spores ◽  
Airborne Fungal Spores

Airborne fungal spores, pollen grains, and vegetable cells in routine Papanicolaou smears

2004 ◽  
Vol 30 (6) ◽  
pp. 381-385 ◽  
Author(s):  
Rafael Martínez-Girón ◽  
Andrés Ribas-Barceló ◽  
M Teresa García-Miralles ◽  
Dolores López-Cabanilles ◽  
M Luisa Tamargo-Peláez ◽  
...  
Keyword(s):  
Fungal Spores ◽  
Pollen Grains ◽  
Airborne Fungal Spores ◽  
Papanicolaou Smears

scholarly journals Allergenic fungal spores in the air of urban parks

Aerobiologia ◽  
2020 ◽  
Author(s):  
Idalia Kasprzyk ◽  
Agnieszka Grinn-Gofroń ◽  
Agata Ćwik ◽  
Katarzyna Kluska ◽  
Paloma Cariñanos ◽  
...  
Keyword(s):  
Fungal Spores ◽  
Urban Parks ◽  
Volumetric Method ◽  
Green Spaces ◽  
Seasonal Occurrence ◽  
Aerobiological Monitoring ◽  
Urban Green ◽  
Urban Green Spaces ◽  
Airborne Fungal Spores ◽  
Burkard Sampler

Abstract Urban green spaces, especially urban parks, are essential for the proper functioning of cities, but they can be a serious source of airborne fungal spores. Aerobiological monitoring was carried out in urban parks of different typology to estimate the risk associated with fungal spores for citizens. Volumetric method was applied with the use of portable Burkard Sampler. In the air of the studied parks, the most dominant spores are strong allergenic or considered as potentially allergenic. Cladosporium spores were found in enormous concentrations in all studied parks, and it affected the low biodiversity of fungal spores in the parks. Compared to Cladosporium, concentrations of Alternaria spores in the air were several dozen times lower, but still a risk for people who are allergic. The fungal spores spectra and their seasonal occurrence in each park were similar. The highest similarities in the patterns of the season were found in the case of Cladosporium, Alternaria, Epicoccum, and the lowest in the case of Torula and Drechslera type. Due to the fact that allergy sufferers are most often polysensitized, the period when they should limit long visits in the urban parks is July–August, when the concentration of allergenic fungal spores of many taxa is the highest.

Diversity and abundance of airborne fungal spores in a rural cold dry desert environment in Argentinean Patagonia

2019 ◽  
Vol 665 ◽  
pp. 513-520 ◽  
Author(s):  
Carolina Virginia Temperini ◽  
María Luisa Franchi ◽  
Martha Elizabeth Benavides Rozo ◽  
Mariana Greco ◽  
Alejandro Guillermo Pardo ◽  
...  
Keyword(s):  
Fungal Spores ◽  
Desert Environment ◽  
Argentinean Patagonia ◽  
Airborne Fungal Spores
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