Pseudomonas deceptionensis sp. nov., a psychrotolerant bacterium from the Antarctic

Carrión, Ornella; Miñana-Galbis, David; Montes, Ma Jesús; Mercadé, Montse

doi:10.1099/ijs.0.024919-0

Cited by 58 publications

(37 citation statements)

References 29 publications

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“…Pseudomonas and Flavobacterium were previously isolated from Deception samples associated with lakes and cold marine sediments (Stanley and Rose 1967;Carrión et al 2011). Arthrobacter, Psychrobacter, and Sphingomonas have been described in several Antarctic ecosystems, such as soils, marine sediments, and sea ice (e.g., Bowman et al 1997;Turkiewicz et al 1999;Reddy et al 2000;Prabagaran et al 2007;Baraniecki et al 2002;Dsouza et al 2015), showing their cosmopolitan nature in cold ecosystems.…”

Section: Discussionmentioning

confidence: 99%

“…Stanley and Rose (1967) identified bacteria of the genera Pseudomonas, Flavobacterium, and Achromobacter from five lakes of Deception. Carrión et al (2011) isolated eight strains of marine sediments from the island, belonging to the genera Pseudomonas, Marinobacter, and Shewanella, and one of these strains was classified as a new species, proposed Pseudomonas deceptionensis. In a previous work, we reported the presence of several extremophiles-related sequences (psychrophiles, thermophiles, hyperthermophiles, and halophiles) among extreme temperature gradients in Deception (Bendia et al 2018).…”

Section: Electronic Supplementary Materialsmentioning

confidence: 99%

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Surviving in hot and cold: psychrophiles and thermophiles from Deception Island volcano, Antarctica

et al. 2018

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Polar volcanoes harbor unique conditions of extreme temperature gradients capable of selecting different types of extremophiles. Deception Island is a marine stratovolcano located at Maritime Antarctica that is notable for its pronounced temperature gradients over very short distances, reaching values up to 100 °C in the fumaroles, and subzero temperatures next to the glaciers. Due to these characteristics, Deception can be considered an interesting analogue of extraterrestrial environments. Our main goal in this study was to isolate thermophilic and psychrophilic bacteria from sediments associated with fumaroles and glaciers from two geothermal sites in Deception Island, comprising temperatures between 0 and 98 °C, and to evaluate their survivability to desiccation and UV-C radiation. Our results revealed that culturable thermophiles and psychrophiles were recovered among the extreme temperature gradient in Deception volcano, which indicates that these extremophiles remain alive even when the conditions do not comprise their growth range. The viability of culturable psychrophiles in hyperthermophilic environments is still poorly understood and our work showed the importance of future studies about their survival strategies in high temperatures. Finally, the spore-forming thermophilic isolates which we found have displayed good survival to desiccation and UV-C irradiation, which suggests their potential to be further explored in astrobiological studies.

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Section: Discussionmentioning

confidence: 99%

Section: Electronic Supplementary Materialsmentioning

confidence: 99%

Surviving in hot and cold: psychrophiles and thermophiles from Deception Island volcano, Antarctica

et al. 2018

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“…New bacteria from unknown habitats constitute a particularly interesting subject of analysis in the quest for unusual features of prokaryotic cells [14,15]. Here we report the use of different TEM and cryo-TEM techniques for the structural examination of the new Antarctic bacterium Pseudomonas deceptionensis M1 T [16], revealing a cytoplasmic structure that, to our knowledge, has not been described before.…”

Section: Introductionmentioning

confidence: 99%

The Stack: A New Bacterial Structure Analyzed in the Antarctic Bacterium Pseudomonas deceptionensis M1T by Transmission Electron Microscopy and Tomography

et al. 2013

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In recent years, improvements in transmission electron microscopy (TEM) techniques and the use of tomography have provided a more accurate view of the complexity of the ultrastructure of prokaryotic cells. Cryoimmobilization of specimens by rapid cooling followed by freeze substitution (FS) and sectioning, freeze fracture (FF) and observation of replica, or cryoelectron microscopy of vitreous sections (CEMOVIS) now allow visualization of biological samples close to their native state, enabling us to refine our knowledge of already known bacterial structures and to discover new ones.Application of these techniques to the new Antarctic cold-adapted bacterium Pseudomonas deceptionensis M1T has demonstrated the existence of a previously undescribed cytoplasmic structure that does not correspond to known bacterial inclusion bodies or membranous formations. This structure, which we term a “stack”, was mainly visualized in slow growing cultures of P . deceptionensis M1T and can be described as a set of stacked membranous discs usually arranged perpendicularly to the cell membrane, but not continuous with it, and found in variable number in different locations within the cell. Regardless of their position, stacks were mostly observed very close to DNA fibers. Stacks are not exclusive to P . deceptionensis M1T and were also visualized in slow-growing cultures of other bacteria. This new structure deserves further study using cryoelectron tomography to refine its configuration and to establish whether its function could be related to chromosome dynamics.

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“…We noted that Pseudomonas deceptionensis M1 T , a new species isolated from Antarctic marine sediment 17 , produced DMS from minimal media containing magnesium sulphate as the only sulphur source (Table 1). P. deceptionensis M1 T does not synthesize DMSP, nor does it catabolize DMSP with its genome lacking any known genes for DMSP catabolism 3,8 .…”

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A novel pathway producing dimethylsulphide in bacteria is widespread in soil environments

et al. 2015

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Pseudomonas deceptionensis sp. nov., a psychrotolerant bacterium from the Antarctic

Abstract: During the taxonomic investigation of cold-adapted bacteria from samples collected in the Antarctic area of the South Shetland Islands, one Gram-reaction-negative, psychrotolerant, aerobic bacterium, designated strain M1T , was isolated from marine sediment collected on

Cited by 58 publications

References 29 publications

Surviving in hot and cold: psychrophiles and thermophiles from Deception Island volcano, Antarctica

Surviving in hot and cold: psychrophiles and thermophiles from Deception Island volcano, Antarctica

The Stack: A New Bacterial Structure Analyzed in the Antarctic Bacterium Pseudomonas deceptionensis M1T by Transmission Electron Microscopy and Tomography

A novel pathway producing dimethylsulphide in bacteria is widespread in soil environments

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