TY - JOUR
T1 - Survival of Icelandic airborne microbes towards simulated atmospheric stress factors
AU - Daussin, Aurélien
AU - Vannier, Pauline
AU - Mater, Émilien
AU - Šantl-Temkiv, Tina
AU - Cockell, Charles
AU - Marteinsson, Viggó Þór
N1 - Publisher Copyright:
© 2023, The Author(s), under exclusive licence to Springer Nature Japan KK, part of Springer Nature.
PY - 2023/8
Y1 - 2023/8
N2 - Surface microbes are aerosolized into the atmosphere by wind and events such as dust storms, wildland fires, and volcano eruptions. Only microbial cells that survive the various atmospheric stressors during their transportation will deposit and colonize new environments. These stressors include desiccation, oxidative stress, solar radiation, osmotic shock, and freeze–thaw cycles. In this paper, we specifically studied the survival of representative microbial model strains isolated from the atmosphere over pristine volcanic landscapes to understand their potential to successfully disperse to novel terrestrial environments. In line with previous studies, we found that the most stringent selection factors were the freeze–thaw and osmotic shock cycles and that the strains affiliated with Proteobacteria and Ascomycota were the best to survive simulated atmospheric stresses. Specifically, isolates belonging to Paracoccus marinus, Janthinobacterium rivuli, and Sarocladium kiliense exhibited the highest levels of resistance to atmospheric stress. However, the number of strains tested in our study was limited and caution should be taken when generalizing these findings.
AB - Surface microbes are aerosolized into the atmosphere by wind and events such as dust storms, wildland fires, and volcano eruptions. Only microbial cells that survive the various atmospheric stressors during their transportation will deposit and colonize new environments. These stressors include desiccation, oxidative stress, solar radiation, osmotic shock, and freeze–thaw cycles. In this paper, we specifically studied the survival of representative microbial model strains isolated from the atmosphere over pristine volcanic landscapes to understand their potential to successfully disperse to novel terrestrial environments. In line with previous studies, we found that the most stringent selection factors were the freeze–thaw and osmotic shock cycles and that the strains affiliated with Proteobacteria and Ascomycota were the best to survive simulated atmospheric stresses. Specifically, isolates belonging to Paracoccus marinus, Janthinobacterium rivuli, and Sarocladium kiliense exhibited the highest levels of resistance to atmospheric stress. However, the number of strains tested in our study was limited and caution should be taken when generalizing these findings.
KW - Bioaerosols
KW - Environmental stress
KW - Iceland
KW - Microbial survival
UR - https://www.scopus.com/pages/publications/85164125766
U2 - 10.1007/s00792-023-01302-6
DO - 10.1007/s00792-023-01302-6
M3 - Journal article
C2 - 37418077
AN - SCOPUS:85164125766
SN - 1431-0651
VL - 27
JO - Extremophiles
JF - Extremophiles
IS - 2
M1 - 17
ER -