Ice Nucleation Activity and Aeolian Dispersal Success in Airborne and Aquatic Microalgae.

ABSTRACT: Microalgae are common members of the atmospheric microbial assemblages. Diverse airborne microorganisms are known to produce ice nucleation active (INA) compounds, which catalyze cloud and rain formation, and thus alter cloud properties and their own deposition patterns. While the role of INA bacteria and fungi in atmospheric processes receives considerable attention, the numerical abundance and the capacity for ice nucleation in atmospheric microalgae are understudied. We isolated 81 strains of airborne microalgae from snow samples and determined their taxonomy by sequencing their ITS markers, 18S rRNA genes or 23S rRNA genes. We studied ice nucleation activity of airborne isolates, using droplet freezing assays, and their ability to withstand freezing. For comparison, we investigated 32

SUBMITTER: Tesson SVM 

PROVIDER: S-EPMC6240693 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature