Please use this identifier to cite or link to this item: http://hdl.handle.net/2067/47548
Title: Could Pontimonas harbour halophilic members able to withstand very broad salinity variations?
Authors: Gorrasi, Susanna 
Pasqualetti, Marcella 
Braconcini, Martina 
Muñoz-Palazon, Barbara
Fenice, Massimiliano 
Journal: MICROORGANISMS 
Issue Date: 2022
Abstract: 
Pontimonas is currently described as a genus including only one species of slightly halo-philic marine bacteria. Although some works revealed its presence in some hypersaline environ-ments, the information on its habitat preference is still scant. This work investigated Pontimonas presence in selected ponds of the Saline di Tarquinia marine saltern and in the seawater intake area. The two-year metabarcoding survey documented its constant presence along the ponds establishing the salinity gradient and in a distinct basin with permanent hypersaline conditions (BSB). Pontimo-nas was higher in the ponds than in the sea, whereas it had similar abundances in the sea and in the BSB. Its representative OTUs showed significant trends according to different parameters. Along the salinity gradient, OTU1 abundance increased with decreasing water temperatures and increasing rainfalls, and it showed a maximum in January; OTU2 increased with increasing BOD5 and it showed the highest abundances in the period August–October, and OTU 3194 increased at decreasing salinities. In BSB, a significant seasonal variation was shown by OTU 3194, which started increasing in spring to reach a maximum in summer. The results suggest that Pontimonas could easily settle in hypersaline habitats, having also broad euryhaline members and some possible extreme halophilic representatives.
URI: http://hdl.handle.net/2067/47548
ISSN: 2076-2607
DOI: 10.3390/microorganisms10040790
Rights: Attribution 4.0 International
Appears in Collections:A1. Articolo in rivista

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