Culturable bacteria in clouds at Réunion, tropical island - Archive ouverte HAL
Article Dans Une Revue Aerobiologia Année : 2024

Culturable bacteria in clouds at Réunion, tropical island

Résumé

The viable bacterial assemblages in clouds at Réunion Island (Indian Ocean) were examined through culture-based approach. A total of 176 isolates were recovered from 15 independent cloud events collected during 3 field campaigns, and identified to the species level through full length 16S rRNA gene sequencing. As often in atmospheric samples, Alpha-, Beta- and Gamma-proteobacteria dominated, along with Actinobacteria, Firmicutes, and Bacteroidetes, depicting these as the backbone of the global aeromicrobiome. A comparative analysis with similar work from a cloud sampling site in Central France revealed site-specificities, and numerous common species. These latter included members of Pseudomonas, Sphingomonas, Bacillus, Staphylococcus, Rhodococcus and others, whose such widespread presence in clouds supports the existence of a pan-atmospheric microbiome. This also confirms that cultures remain powerful methods in the description of the viable microbial diversity by allowing deep taxonomic affiliation.
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Dates et versions

hal-04729278 , version 1 (09-10-2024)

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Thomas Charpentier, Muriel Joly, Céline Judon, Martine Sancelme, Magali Abrantes, et al.. Culturable bacteria in clouds at Réunion, tropical island. Aerobiologia, 2024, 40 (2), pp.297-302. ⟨10.1007/s10453-024-09819-9⟩. ⟨hal-04729278⟩
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