Pontibacillus sp. ALD_SL1 and Psychroflexus sp. ALD_RP9, two novel moderately halophilic bacteria isolated from sediment and water from the Aldabra Atoll, Seychelles
2021 | journal article; research paper. A publication with affiliation to the University of Göttingen.
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Pontibacillus sp. ALD_SL1 and Psychroflexus sp. ALD_RP9, two novel moderately halophilic bacteria isolated from sediment and water from the Aldabra Atoll, Seychelles
von Hoyningen-Huene, A. J. E.; Schlotthauer, T. J.; Schneider, D.; Poehlein, A. & Daniel, R. (2021)
PLoS One, 16(8) pp. e0256639. DOI: https://doi.org/10.1371/journal.pone.0256639
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- Authors
- von Hoyningen-Huene, Avril J. E.; Schlotthauer, Tabea J.; Schneider, Dominik; Poehlein, Anja ; Daniel, Rolf
- Abstract
- Pontibacillus sp. ALD_SL1 and Psychroflexus sp. ALD_RP9 are two novel bacterial isolates from mangrove sediment and a moderately hypersaline pool on the Aldabra Atoll, Seychelles. The isolates represent two novel species were characterised physiologically and genomically. Pontibacillus sp. ALD_SL1 is a facultatively anaerobic yellow, motile, rod-shaped Gram-positive, which grows optimally at a NaCl concentration of 11%, pH 7 and 28°C. It is the third facultatively anaerobic member of the genus Pontibacillus . The organism gains energy through the fermentation of pyruvate to acetate and ethanol under anaerobic conditions. The genome is the first among Pontibacillus that harbours a megaplasmid. Psychroflexus sp. ALD_RP9 is an aerobic heterotroph, which can generate energy by employing bacteriorhodopsins. It forms Gram-negative, orange, non-motile rods. The strain grows optimally at NaCl concentrations of 10%, pH 6.5–8 and 20°C. The Psychroflexus isolate tolerated pH conditions up to 10.5, which is the highest pH tolerance currently recorded for the genus. Psychroflexus sp. ALD_RP9 taxonomically belongs to the clade with the smallest genomes. Both isolates show extensive adaptations to their saline environments yet utilise different mechanisms to ensure survival.
- Issue Date
- 2021
- Journal
- PLoS One
- Organization
- Abteilung Genomische & Angewandte Mikrobiologie
- eISSN
- 1932-6203
- Language
- English
- Sponsor
- Open-Access-Publikationsfonds 2021