Extremophilic microbial communities of saline soils and their diversity in the regions of the Caspian Depression

Khalilova, E. A.; Kotenko, S. Ts.; Islammagomedova, E. A.; Gasanov, R. Z.; Abakarova, Aida A.; Aliverdieva, D. A.

doi:10.1134/s2079096117020068

Cited by 6 publications

(2 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Phylogenetic analysis, therefore, demonstrated the high diversity of microbial communities in this lake. High abundance and diversity has also been described for the microbial community present in the salt lake Chott El Djerid in Tunisia [191] and in alkaline-saline soils in the regions of the Caspian Depression, where 40 species of bacteria were identified, with the genera Bacillus and Salimicrobium being the primary components of these communities [192].…”

Section: They Are Habitat Specialists and We Have Not Yet Evaluated mentioning

confidence: 99%

Microbial Diversity: The Gap between the Estimated and the Known

Vitorino

Bessa

2018

Diversity

View full text Add to dashboard Cite

Abstract:The ecological and biotechnological services that microorganisms provide to the planet and human society highlight the need to understand and preserve microbial diversity, which is widely distributed, challenging the severity of certain environments. Cataloging this diversity has also challenged the methods that are currently used to isolate and grow microorganisms, because most of the microbiota that are present in environmental samples have been described as unculturable. Factors such as geographic isolation and host preference also hinder the assessment of microbial diversity. However, prejudiced historical practices, including the prioritization of some species of microorganisms merely because they cause diseases, have long shifted research on fungi and bacteria towards medically relevant microorganisms. Thus, most microorganisms that inhabit the planet are still unknown, as is the potential of these species. Current estimates allow us to predict that the diversity of microorganisms that are present in the various terrestrial ecosystems is enormous. However, understanding this diversity is a challenge for the future of microbial ecology research.

show abstract

Section: They Are Habitat Specialists and We Have Not Yet Evaluated mentioning

confidence: 99%

Microbial Diversity: The Gap between the Estimated and the Known

Vitorino

Bessa

2018

Diversity

View full text Add to dashboard Cite

show abstract

“…The study considers the spatial distribution of halophilic microbial communities of halophyte plants, saline soils, and highly mineralized lakes in arid regions of the Peri-Caspian Lowland (Khalilova et al, 2017(Khalilova et al, , 2020. Chemoorganoheterotrophic bacteria of the genera V irgibacillus, Bacillus, Halomonas and Salimicrobium from the phylum Firmi cutes and Proteobacteria have proved to be the main components of the microbial flora of the Tersko-Kumskaya and Tersko-Sulakskaya provinces.…”

Section: Introductionmentioning

confidence: 99%

Halophilic bacteria of salt lakes and saline soils of the Peri-Caspian lowland (Republic of Daghestan) and their biotechnological potential

Khalilova¹,

Kotenko²,

Islammagomedova³

et al. 2021

Vestn. VOGiS

Self Cite

View full text Add to dashboard Cite

The article presents the results of studying the biodiversity and biotechnological potential of halophilic microorganisms from the thermal highly mineralized Berikey Lake, the salty Lake Tarumovskoye and saline soils of the Peri-Caspian Lowland (Republic of Daghestan). Denitrifying halophilic bacteria of the genus Halomonas and Virgibacillus were identified using microbiological methods and 16S rRNA gene analysis. A new species Halomonas sp. G2 (MW386470) with a similarity of the nucleotide sequences of the 16S rRNA genes is 95 %. Strain G2 is an extreme halophile capable of growing in the range of 5–25 % NaCl (optimum 25 %) and forming a carotenoid pigment. Mesophil, 30–37 °С (optimum 30 °С); neutrophil, pH 6–8 (optimum 7.2–7.4). Strain G2 chemolithotroph; reduces nitrate or nitrite as electron donors; catalase-, amylase-, protease- and β-galactosidase-positive; lipase-, oxidase- and urease-negative. Not able to hydrolyze inositol, indole; produces lysine, gelatin, ectoine; uses citrate and sodium malate as a source of carbon and energy; does not produce ornitin, H2S or acid from d-mannose, sucrose, glycerol, cellobiose, except for lactose and d-glucose. Susceptible to trimethoprim, ciprofloxacin, ofloxacin, kanamycin, vancomycin, rifampicin, cefuroxime, ampicillin, ceftazidime, fosfomycin, clarithromycin, cefepime, cefaclor. The G+C content in DNA is 67.3 %. A distinctive characteristic of the isolate was the production of industrially significant hydrolytic enzymes such as amylase, protease, β-galactosidase, and oxidoreductase (catalase) at a NaCl concentration of 25 % in the medium. Habitat: saline soils on the territory of the Tersko-Kumskaya lowland (Republic of Daghestan, Russia). The rest of the halophilic isolates of H. ventosae G1 (MW386469), H. elongata G3 (MW386471), V. salinarius B2 (MW386472), and V. salinarius B3 (MW386473) had a high degree of similarity (100 %) with the type strains of H. elongata DSM 2581Т and V. salarius DSM 18441Т; the content of G+C in DNA was 65.8, 66.5, 42.8 and 37.3 %, respectively. The strains had a high biotechnological potential at NaCl concentrations of 5 and 25 % in the medium. The data obtained expanded the understanding of the diversity and ecological significance of denitrifying bacteria in the functioning of arid ecosystems and make it possible to identify strains producing enzymes of industrial importance.

show abstract

Microbial Ecology of Saline Ecosystems

Sultanpuram

Mothe

2019

Soil Biology

View full text Add to dashboard Cite

Extremophilic microbial communities of saline soils and their diversity in the regions of the Caspian Depression

Cited by 6 publications

References 4 publications

Microbial Diversity: The Gap between the Estimated and the Known

Microbial Diversity: The Gap between the Estimated and the Known

Halophilic bacteria of salt lakes and saline soils of the Peri-Caspian lowland (Republic of Daghestan) and their biotechnological potential

Microbial Ecology of Saline Ecosystems

Contact Info

Product

Resources

About