Characterization of Salinivibrio socompensis sp. nov., A New Halophilic Bacterium Isolated from the High-Altitude Hypersaline Lake Socompa, Argentina

Galisteo, Cristina; Sánchez‐Porro, Cristina; Haba, Rafael R. de la; López-Hermoso, Clara; Fernández, Ana Beatriz; Farı́as, Marı́a Eugenia; Ventosa, António

doi:10.3390/microorganisms7080241

Cited by 21 publications

(8 citation statements)

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“…Salinivibrios are moderately halophilic bacteria inhabiting a wide range of ecological habitats including hypersaline lakes, marine salterns, salt spring, saltpan, soda lakes, stromatolites, saline soil, and salt mines, salted meats, and brines, etc. [7,8,9,10]. They have adapted to thrive under halophilic conditions, and have been used as model organisms for unraveling halo-tolerance mechanisms [11].…”

Section: Introductionmentioning

confidence: 99%

“…costicola ) was proposed based on polyphasic taxonomy including 16S rRNA gene phylogeny, DNA-DNA hybridization, biochemical tests, chemotaxonomy, and genome based phylogenomic analysis [8,10]. In addition, five new species have also been identified— S. proteolyticus [14], S. siamensis [15] S. sharmensis [10], S. kushneri [9], and S. socompensis [7]. In recent years, 45 genomes of different Salinivibrio strains have been published, but most of them only provided genome statistics or were used for phylogenomic analysis [9,16].…”

Section: Introductionmentioning

confidence: 99%

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Life in High Salt Concentrations with Changing Environmental Conditions: Insights from Genomic and Phenotypic Analysis of Salinivibrio sp.

et al. 2019

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Life in salt pans with varying chemical compositions require special adaptation strategies at both the physiological and molecular level. The Marakkanam salt pan in South India is characterized with a high fluctuation in salinity (19–490 ppt), Ultravioletradiation, and heavy metal concentrations. Several bacterial species have been isolated and identified in the view of phylogenetic analysis and for the subsequent production of industrially important enzymes. However, limited information exists on the genomic basis of their survival under variable environmental conditions. To this extent, we sequenced the whole genome of the Salinivibrio sp. HTSP, a moderately halophilic bacterium. We analysed the physiological and genomic attributes of Salinivibrio sp. HTSP to elucidate the strategies of adaptation under various abiotic stresses. The genome size is estimated to be 3.39 Mbp with a mean G + C content of 50.6%, including 3150 coding sequences. The genome possessed osmotic stress-related coding sequences, and genes involved in different pathways of DNA repair mechanisms and genes related to the resistance to toxic metals were identified. The periplasmic stress response genes and genes of different oxidative stress mechanisms were also identified. The tolerance capacity of the bacterial isolates to heavy metals, UV-radiation, and salinity was also confirmed through appropriate laboratory experiments under controlled conditions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Life in High Salt Concentrations with Changing Environmental Conditions: Insights from Genomic and Phenotypic Analysis of Salinivibrio sp.

et al. 2019

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“…Psychroflexus is a psychrophilic genus belonging to the Flavobacteriaceae and has been isolated from Antarctic sea ice [ 38 ], hypersaline lakes and sea basins [ 39 , 40 , 41 ], and the microbial consortium on the surface of Austrian cheese [ 42 ]. Similarly, Salinivibrio consists of halophilic bacteria commonly found in hypersaline aquatic habitats and salted foods [ 43 , 44 ]. Finding these species is consistent with the cold, saline environment of the Nebraska Salt Marshes in the fall.…”

Section: Resultsmentioning

confidence: 99%

The Eastern Nebraska Salt Marsh Microbiome Is Well Adapted to an Alkaline and Extreme Saline Environment

Athen

Dubey

Kyndt

2021

Life

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The Eastern Nebraska Salt Marshes contain a unique, alkaline, and saline wetland area that is a remnant of prehistoric oceans that once covered this area. The microbial composition of these salt marshes, identified by metagenomic sequencing, appears to be different from well-studied coastal salt marshes as it contains bacterial genera that have only been found in cold-adapted, alkaline, saline environments. For example, Rubribacterium was only isolated before from an Eastern Siberian soda lake, but appears to be one of the most abundant bacteria present at the time of sampling of the Eastern Nebraska Salt Marshes. Further enrichment, followed by genome sequencing and metagenomic binning, revealed the presence of several halophilic, alkalophilic bacteria that play important roles in sulfur and carbon cycling, as well as in nitrogen fixation within this ecosystem. Photosynthetic sulfur bacteria, belonging to Prosthecochloris and Marichromatium, and chemotrophic sulfur bacteria of the genera Sulfurimonas, Arcobacter, and Thiomicrospira produce valuable oxidized sulfur compounds for algal and plant growth, while alkaliphilic, sulfur-reducing bacteria belonging to Sulfurospirillum help balance the sulfur cycle. This metagenome-based study provides a baseline to understand the complex, but balanced, syntrophic microbial interactions that occur in this unique inland salt marsh environment.

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“…These are halophilic bacteria commonly found in hypersaline aquatic habitats and in salty foods. This genus includes five species and two subspecies (Galisteo et al, 2019).…”

Section: Isolation and Phylogenetic Characterization Of The Halophilimentioning

confidence: 99%

Diversity of Culturable Halophilic Archaea and Bacteria from Chott Tinsilt and El Malah Salt-Lake in Algeria

Akmoussi-Toumi¹,

Khemili²,

Kebbouche-Gana³

et al. 2019

Current Research in Bioinformatics

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At the limits of life, hyper-saline aquatic ecosystems; Chott and Sebkha are a model of choice of extreme environments, housing a halophilic microflora that had to adapt to these conditions. In Algeria, these ecosystems are poorly studied. However, our study was carried out on the waters of Chott Tinsilt and Sebkha El Malah. The study of this microflora revealed the presence of a significant morphological, physiological and metabolic diversity. The molecular study allowed us to access to a phylogenetic affiliation including an Archean Species (ATS1) and 7 bacterial species (A1, A2, A3, A4, B1, B4, B5). The results showed that these isolates were related to the genera Haloferax (for the strain ATS1) and Halomonas (strains A1, A2 and A4), Staphylococcus (strain A3), Salinivibrio (strain B1), Planococcus (strain B4) and Halobacillus (strain B5). Most isolates produced hydrolases at high salt concentrations. The Production yields obtained are very promising for applications in the biotechnology and industrial microbiology.

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Characterization of Salinivibrio socompensis sp. nov., A New Halophilic Bacterium Isolated from the High-Altitude Hypersaline Lake Socompa, Argentina

Cited by 21 publications

References 47 publications

Life in High Salt Concentrations with Changing Environmental Conditions: Insights from Genomic and Phenotypic Analysis of Salinivibrio sp.

Life in High Salt Concentrations with Changing Environmental Conditions: Insights from Genomic and Phenotypic Analysis of Salinivibrio sp.

The Eastern Nebraska Salt Marsh Microbiome Is Well Adapted to an Alkaline and Extreme Saline Environment

Diversity of Culturable Halophilic Archaea and Bacteria from Chott Tinsilt and El Malah Salt-Lake in Algeria

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