Marinobacter halophilus sp. nov., a halophilic bacterium isolated from a salt lake

Zhong, Zhi-Ping; Liu, Ying; Liu, Hong‐Can; Wang, Fang; Zhou, Yu‐Guang; Liu, Zhi-Pei

doi:10.1099/ijs.0.000338

Cited by 28 publications

(17 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly to the dune groundwater, gram-negative and aerobic microbes are prominent. Halophile ( Halobacteria ) have a more substantial presence in GW-2 (southern edge of the playa), implying higher salinity at this location (Jeong et al, 2013; Madigan et al, 2015; Zhong et al, 2015), which is confirmed by our conductivity measurements where GW-1 measured 59 μS and GW-2 139.9 μS (Table 1). The abundances of Thiomicrospira and Sediminimonas imply that both locations are primarily oxidizing environments with readily available reduced compounds (Wang et al, 2009; Madigan et al, 2015).…”

Section: Discussionsupporting

confidence: 75%

Subsurface Microbial Ecology at Sediment-Groundwater Interface in Sulfate-Rich Playa; White Sands National Monument, New Mexico

et al. 2019

View full text Add to dashboard Cite

The hypersaline sediment and groundwater of playa lake, Lake Lucero, at the White Sands National Monument in New Mexico were examined for microbial community composition, geochemical gradients, and mineralogy during the dry season along a meter and a half depth profile of the sediment vs. the groundwater interface. Lake Lucero is a highly dynamic environment, strongly characterized by the capillary action of the groundwater, the extreme seasonality of the climate, and the hypersalinity. Sediments are predominantly composed of gypsum with minor quartz, thenardite, halite, quartz, epsomite, celestine, and clays. Geochemical analysis has revealed the predominance of nitrates over ammonium in all of the analyzed samples, indicating oxygenated conditions throughout the sediment column and in groundwater. Conversely, the microbial communities are primarily aerobic, gram-negative, and are largely characterized by their survival adaptations. Halophiles and oligotrophs are ubiquitous for all the samples. The very diverse communities contain methanogens, phototrophs, heterotrophs, saprophytes, ammonia-oxidizers, sulfur-oxidizers, sulfate-reducers, iron-reducers, and nitrifiers. The microbial diversity varied significantly between groundwater and sediment samples as their temperature adaptation inferences that revealed potential psychrophiles inhabiting the groundwater and thermophiles and mesophiles being present in the sediment. The dynamism of this environment manifests in the relatively even character of the sediment hosted microbial communities, where significant taxonomic distinctions were observed. Therefore, sediment and groundwater substrates are considered as separate ecological entities. We hope that the variety of the discussed playa environments and the microorganisms may be considered a useful terrestrial analog providing valuable information to aid future astrobiological explorations.

show abstract

Section: Discussionsupporting

confidence: 75%

Subsurface Microbial Ecology at Sediment-Groundwater Interface in Sulfate-Rich Playa; White Sands National Monument, New Mexico

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Our research demonstrated that a few bacterial taxa namely Idiomarina , Psychroflexus , Roseovarius , and Marinobacter appeared over a wide salinity range, i.e., 4.5–27% showing their broad ecological plasticity. Indeed their representatives have been isolated from a variety of environments starting from estuaries and seawater to hypersaline crystallizer ponds (Lee et al 2015 ; Máthé et al 2014 ; Park et al 2016 ; Zhong et al 2015 ). On the other hand, one of the possible microbial community responses to increasing salinity is the replacement of suboptimally adapted taxa by taxa better adapted to the given salinity conditions (Wu et al 2006 ).…”

Section: Discussionmentioning

confidence: 99%

Changes in bacterial and archaeal communities during the concentration of brine at the graduation towers in Ciechocinek spa (Poland)

et al. 2017

View full text Add to dashboard Cite

This study evaluates the changes in bacterial and archaeal community structure during the gradual evaporation of water from the brine (extracted from subsurface Jurassic deposits) in the system of graduation towers located in Ciechocinek spa, Poland. The communities were assessed with 16S rRNA gene sequencing (MiSeq, Illumina) and microscopic methods. The microbial cell density determined by direct cell count was at the order of magnitude of 107 cells/mL. It was found that increasing salt concentration was positively correlated with both the cell counts, and species-level diversity of bacterial and archaeal communities. The archaeal community was mostly constituted by members of the phylum Euryarchaeota, class Halobacteria and was dominated by Halorubrum-related sequences. The bacterial community was more diverse, with representatives of the phyla Proteobacteria and Bacteroidetes as the most abundant. The proportion of Proteobacteria decreased with increasing salt concentration, while the proportion of Bacteroidetes increased significantly in the more concentrated samples. Representatives of the genera Idiomarina, Psychroflexus, Roseovarius, and Marinobacter appeared to be tolerant to changes of salinity. During the brine concentration, the relative abundances of Sphingobium and Sphingomonas were significantly decreased and the raised contributions of genera Fabibacter and Fodinibius were observed. The high proportion of novel (not identified at 97% similarity level) bacterial reads (up to 42%) in the 16S rRNA gene sequences indicated that potentially new bacterial taxa inhabit this unique environment.Electronic supplementary materialThe online version of this article (10.1007/s00792-017-0992-5) contains supplementary material, which is available to authorized users.

show abstract

“…The genus Marinobacter was proposed by Gauthier et al (1992) with the description of Marinobacter hydrocarbonoclasticus as the type species. At the time of writing, the genus Marinobacter comprises 37 species with validly published names ( http://www.bacterio.net/marinobacter.html ; Parte, 2014; Vaidya et al , 2015; Zhong et al , 2015). Phylogenetic analysis based on 16S rRNA gene sequences showed that the genus Marinobacter falls within the class Gammaproteobacteria (Anzai et al , 2000).…”

mentioning

confidence: 99%

“…Phylogenetic analysis based on 16S rRNA gene sequences showed that the genus Marinobacter falls within the class Gammaproteobacteria (Anzai et al , 2000). Members of the genus Marinobacter have been isolated from a variety of marine environments (Zhong et al , 2015). During recent screening of novel bacteria from the junction between the ocean and a freshwater lake on the East Sea of South Korea, many novel bacterial strains have been isolated and characterized taxonomically.…”

mentioning

confidence: 99%

Marinobacter confluentis sp. nov., a lipolytic bacterium isolated from a junction between the ocean and a freshwater lake

Park

Kim

Kang

et al. 2015

International Journal of Systematic and Evolutionary Microbiology

View full text Add to dashboard Cite

A Gram-stain-negative, motile, aerobic and rod-shaped bacterium, designated HJM-18T, was isolated from the place where the ocean and a freshwater lake meet at Hwajinpo, South Korea, and subjected to a taxonomic study using a polyphasic approach. Strain HJM-18T grew optimally at 30 °C, at pH 7.0–8.0 and in the presence of 1.0–3.0 % (w/v) NaCl. Phylogenetic trees based on 16S rRNA gene sequences showed that strain HJM-18T belonged to the genus Marinobacter. Strain HJM-18T exhibited 16S rRNA gene sequence similarity values of 97.05–98.22 % to the type strains of Marinobacter algicola, Marinobacter flavimaris, Marinobacter adhaerens, Marinobacter salarius, Marinobacter salsuginis, Marinobacter guineae and Marinobacter gudaonensis and of 93.21–96.98 % to the type strains of the other species of the genus Marinobacter. Strain HJM-18T contained Q-9 as the predominant ubiquinone and summed feature 3 (C16 : 1ω7c and/or C16 : 1ω6c), C16 : 0 and C18 : 1ω9c as the major fatty acids. The major polar lipids detected in strain HJM-18T were phosphatidylethanolamine, phosphatidylglycerol and one unidentified aminophospholipid. The DNA G+C content was 58 mol% and the mean DNA–DNA relatedness values with the type strains of the seven phylogenetically related species of the genus Marinobacter were 10–27 %. Differential phenotypic properties, together with phylogenetic and genetic distinctiveness, revealed that strain HJM-18T is separated from recognized species of the genus Marinobacter. On the basis of the data presented, strain HJM-18T represents a novel species of the genus Marinobacter, for which the name Marinobacter confluentis sp. nov. is proposed. The type strain is HJM-18T ( = KCTC 42705T = NBRC 111223T).

show abstract

Marinobacter halophilus sp. nov., a halophilic bacterium isolated from a salt lake

Cited by 28 publications

References 52 publications

Subsurface Microbial Ecology at Sediment-Groundwater Interface in Sulfate-Rich Playa; White Sands National Monument, New Mexico

Subsurface Microbial Ecology at Sediment-Groundwater Interface in Sulfate-Rich Playa; White Sands National Monument, New Mexico

Changes in bacterial and archaeal communities during the concentration of brine at the graduation towers in Ciechocinek spa (Poland)

Marinobacter confluentis sp. nov., a lipolytic bacterium isolated from a junction between the ocean and a freshwater lake

Contact Info

Product

Resources

About