[Zurück]

B. G. Pummer, L. Atanasova, H. Bauer, J. Bernardi, I. Druzhinina, H. Grothe:
"Determining the ice nucleation of fungal spores in the oil immersion mode";
Vortrag: Workshop: Bioaerosol Effects on Clouds, Steamboat Springs, Colorado, USA (eingeladen); 05.08.2012 - 06.08.2012.

The oil immersion method [Marcolli] is a convenient approach to study the impact of aerosols on the freezing properties of clouds in laboratory dimensions. We applied this approach to determine the ice nucleation potential of spores from different fungal species. The fungal kingdom consists of at least 105 species including the two phyla of higher fungi Ascomycota (typical moulds, yeasts and lichen mycobionts) and Basidiomycota (most mushrooms).
We focused on species of ecological, economical and/or sanitary importance. Our study covered spores of different fungal clades, especially those that are common in the atmosphere [Fröhlich-Nowolski]. For the first time ever we also studied Basidiomycota spores, while former studies focused only on Ascomycota [Kieft, Pouleur, Tsumuki, Iannone]. Our results support the hypothesis that most species have no impact on ice nucleation, and that significant biological ice nucleation is an exclusive property of only a few species.

Fröhlich-Nowolski et al.: Proc. Natl. Acad. Sci. 106, 12814-12819, 2009
Iannone R et al.: Atmos. Chem. Phys. 11, 1191-1201, 2011
Kieft TL and Ahmadjian V: Lichenologist 21, 355-362, 1989
Marcolli C et al.: Atmos. Chem. Phys. 7, 5081-5091, 2007
Pouleur S et al.: Appl. Environ. Microbiol. 58, 2960-2964, 1992
Tsumuki H et al.: Ann. Phytopathol. Soc. Jpn. 61, 334-339, 1995

Fungal Spores, Bioaerosols, Ice, Microscopy, Climate, Clouds

http://publik.tuwien.ac.at/files/PubDat_209457.pdf