Diversity of bacteria of the family Halomonadaceae at the mining area of the Verkhnekamsk salt deposit

Korsakova, E. S.; Anan’ina, L. N.; Назаров, А. В.; Bachurin, B A; Плотникова, Е. Г.

doi:10.1134/s0026261713020070

Cited by 10 publications

(2 citation statements)

References 5 publications

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“…Often, a sharp vegetation line can be observed around the piles, following the prevailing salinity gradient. At higher salinities, only micro-organisms are able to thrive, but only a few studies have addressed their occurrence (Eilmus et al, 2007;Korsakova et al, 2013;Olsson et al, 2017). Therefore, the present study provides the first description of terrestrial microalgal communities on potash tailings pile sites, which have so far been neglected.…”

Section: Introductionmentioning

confidence: 92%

Halophilic Algal Communities in Biological Soil Crusts Isolated From Potash Tailings Pile Areas

2020

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Mining potash for fertilizer produces vast amounts of highly saline waste that is deposited in potash tailings piles. Rainfall washes the salts out, affecting the surrounding ecosystems. Only salt-tolerant organisms occur close to the piles, since other species cannot survive in these hypersaline conditions. Halophytic plant communities around tailings piles have been well investigated. However, studies exploring the biodiversity of the space behind the vegetation line that separates suitable salinities for plant growth from hostile conditions are rare. On top of the tailings piles, only microorganisms thrive. This study, for the first time, explored the microalgae and cyanobacteria in biocrusts that inhabit potash tailings pile areas between the vegetation line and the pile body. Two biocrust types were studied: young biocrusts at or close to the tailings piles, and established biocrusts situated in the near surroundings. The estimated abundance of green algae, cyanobacteria and diatoms was studied using a direct microscopy approach, followed by the isolation and establishment of unialgal strains and morphological species determinations. Soil environmental characteristics were analyzed. Soil samples showed EC Sat (electrical conductivity) values that drastically exceeded the scales commonly used to describe soil salinity, indicating extremely saline conditions. Indeed, the isolate composition was shaped by soil salinity parameters. Soil EC Sat of young biocrusts tended to be higher than in established biocrusts, and filamentous green algae were most abundant. In contrast, established biocrusts tended to have a lower EC Sat and were mostly dominated by filamentous cyanobacteria. Algal and cyanobacteria isolate composition differed significantly in young and established biocrusts, although the species number did not. Some of the salt-tolerant algal strains are assumed to be candidates for the formation of artificial biocrusts on the surface of the tailings. Attempts to "green" the piles by the establishment of higher plants to trap rainwater and therefore reduce the salt-output are difficult to apply. Plants require a thick layer of substrate to reduce the salinity, and the substrate easily erodes on the steep slopes. However, microalgae isolated from potash tailings pile areas seem promising, since they can survive on a thinner substrate layer and are already adapted to these hypersaline conditions.

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Section: Introductionmentioning

confidence: 92%

Halophilic Algal Communities in Biological Soil Crusts Isolated From Potash Tailings Pile Areas

2020

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“…MH3R3–1 Evidence code a Classification Domain: Bacteria TAS [ 41 ] Phylum: Proteobacteria TAS [ 42 ] Class: Gammaproteobacteria TAS [ 43 ] Order: Oceanospirillales TAS [ 44 ] Family: Halomonadaceae TAS [ 1 ] Genus: Salinicola TAS [ 1 , 9 ] Species: Salinicola sp . TAS [ 45 ] Strain: MH3R3–1 TAS [ 45 ] Gram stain Negative NAS [ 45 ] Cell shape Rod NAS [ 45 ] Motility Motile NAS [ 45 ] Sporulation Non-sporulating NAS [ 45 ] Temperature range Mesophilic TAS [ 45 ] Optimum temperature Not available pH range Not available Carbon source Not available MIGS-6 Habitat Rhizosphere of Spergularia salina TAS [ 45 ] MIGS-6.3 Salinity 0–25.0% …”

Section: Organism Informationmentioning

confidence: 99%

Draft genome sequences of strains Salinicola socius SMB35T, Salinicola sp. MH3R3–1 and Chromohalobacter sp. SMB17 from the Verkhnekamsk potash mining region of Russia

Olsson

Korsakova

Anan’ina

et al. 2017

Stand in Genomic Sci

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Halomonads are moderately halophilic bacteria that are studied as models of prokaryotic osmoadaptation and sources of enzymes and chemicals for biotechnological applications. Despite the progress in understanding the diversity of these organisms, our ability to explain ecological, metabolic, and biochemical traits of halomonads at the genomic sequence level remains limited. This study addresses this gap by presenting draft genomes of Salinicola socius SMB35T, Salinicola sp. MH3R3–1 and Chromohalobacter sp. SMB17, which were isolated from potash mine tailings in the Verkhnekamsk salt deposit area of Russia. The analysis of these genomes confirmed the importance of ectoines and quaternary amines to the capacity of halomonads to tolerate osmotic stress and adapt to hypersaline environments. The study also revealed that Chromohalobacter and Salinicola share 75–90% of the predicted proteome, but also harbor a set of genus-specific genes, which in Salinicola amounted to approximately 0.5 Mbp. These genus-specific genome segments may contribute to the phenotypic diversity of the Halomonadaceae and the ability of these organisms to adapt to changing environmental conditions and colonize new ecological niches.

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New Data on the Phylogenetic Diversity of Bacteria and Archaea in Marls of the Verkhnekamsk Salt Deposit (Russia)

Korsakova

Pyankova

Bachurin

et al. 2023

Lecture Notes in Networks and Systems

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Diversity of bacteria of the family Halomonadaceae at the mining area of the Verkhnekamsk salt deposit

Cited by 10 publications

References 5 publications

Halophilic Algal Communities in Biological Soil Crusts Isolated From Potash Tailings Pile Areas

Halophilic Algal Communities in Biological Soil Crusts Isolated From Potash Tailings Pile Areas

Draft genome sequences of strains Salinicola socius SMB35T, Salinicola sp. MH3R3–1 and Chromohalobacter sp. SMB17 from the Verkhnekamsk potash mining region of Russia

New Data on the Phylogenetic Diversity of Bacteria and Archaea in Marls of the Verkhnekamsk Salt Deposit (Russia)

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