Complete Genome Sequence of
            <i>Salinarchaeum</i>
            sp. Strain HArcht-Bsk1
            <sup>T</sup>
            , Isolated from Hypersaline Lake Baskunchak, Russia

Доминова, И. Н.; Sorokin, Dimitry Y.; Kublanov, Ilya V.; Патрушев, М. В.; Toshchakov, Stepan V.

doi:10.1128/genomea.00505-13

Cited by 11 publications

(4 citation statements)

References 5 publications

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“…HArcht‐Bsk1T, also contains one single rRNA operon (Dominova et al. ) as well as the bacterium Mycobacteria, a fact that was associated to their slow growth (Arnvig et al. ).…”

Section: Resultsmentioning

confidence: 99%

Genome sequence of the model sulfate reducer Desulfovibrio gigas: a comparative analysis within the Desulfovibrio genus

et al. 2014

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Desulfovibrio gigas is a model organism of sulfate-reducing bacteria of which energy metabolism and stress response have been extensively studied. The complete genomic context of this organism was however, not yet available. The sequencing of the D. gigas genome provides insights into the integrated network of energy conserving complexes and structures present in this bacterium. Comparison with genomes of other Desulfovibrio spp. reveals the presence of two different CRISPR/Cas systems in D. gigas. Phylogenetic analysis using conserved protein sequences (encoded by rpoB and gyrB) indicates two main groups of Desulfovibrio spp, being D. gigas more closely related to D. vulgaris and D. desulfuricans strains. Gene duplications were found such as those encoding fumarate reductase, formate dehydrogenase, and superoxide dismutase. Complexes not yet described within Desulfovibrio genus were identified: Mnh complex, a v-type ATP-synthase as well as genes encoding the MinCDE system that could be responsible for the larger size of D. gigas when compared to other members of the genus. A low number of hydrogenases and the absence of the codh/acs and pfl genes, both present in D. vulgaris strains, indicate that intermediate cycling mechanisms may contribute substantially less to the energy gain in D. gigas compared to other Desulfovibrio spp. This might be compensated by the presence of other unique genomic arrangements of complexes such as the Rnf and the Hdr/Flox, or by the presence of NAD(P)H related complexes, like the Nuo, NfnAB or Mnh.

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“…HArcht‐Bsk1T, also contains one single rRNA operon (Dominova et al. ) as well as the bacterium Mycobacteria, a fact that was associated to their slow growth (Arnvig et al. ).…”

Section: Resultsmentioning

confidence: 99%

Genome sequence of the model sulfate reducer Desulfovibrio gigas: a comparative analysis within the Desulfovibrio genus

et al. 2014

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“…Indeed, the chitinase genes (GH family 18) are present in the genomes of the genera Halobacterium , Halomicrobium , Natrinema , Haloferax and Salinarchaeum. Furthermore, recent physiological studies of pure cultures belonging to these genera have confirmed their ability to use chitin as growth substrate [37], [14], [15], [8], [9], [24], substantially changing previous concepts of the ecological role of these extremophilic archaea.…”

Section: Introductionmentioning

confidence: 99%

Natrarchaeobius chitinivorans gen. nov., sp. nov., and Natrarchaeobius halalkaliphilus sp. nov., alkaliphilic, chitin-utilizing haloarchaea from hypersaline alkaline lakes

Sorokin

Elcheninov

Toshchakov

et al. 2019

Systematic and Applied Microbiology

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Two groups of alkaliphilic haloarchaea from hypersaline alkaline lakes in Central Asia, Egypt and North America were enriched and isolated in pure culture using chitin as growth substrate. These cultures, termed AArcht, were divided into two groups: group 1 which includes eleven isolates from highly alkaline soda lakes and group 2 which contains a single isolate obtained from the alkaline hypersaline Searles Lake. The colonies of chitin-utilizing natronoarchaea were red-pigmented and surrounded by large zones of chitin hydrolysis. The free cells of both groups were mostly flat nonmotile rods, while the cells that attached to chitin or formed colonies on chitin plates were mostly coccoid. The isolates are obligate aerobic saccharolytic archaea utilizing chitin and chitosane (less actively) as the only sugar polymers as well as a few hexoses as their carbon and energy source. Both groups are extremely halophilic, growing optimally at 3.5–4 M total Na + , but they differ in their pH profiles: the main group 1 isolates are obligately alkaliphilic, while the single group 2 strain (AArcht-Sl T ) is alkalitolerant. The core archaeal lipids in both groups are dominated by C 20 –C 20 and C 20 –C 25 dialkyl glycerol ethers (DGE) in approximately equal proportion. Phylogenetic analysis indicated that the isolates form an independent genus-level lineage within the family Natrialbaceae with 3 species-level subgroups. The available genomes of the closest cultured relatives of the AArcht strains, belonging to the genera Natrialba and Halopiger , do not encode any chitinase-related genes. On the basis of their unique phenotypic properties and distinct phylogeny, we suggest that the obligate alkaliphilic AArcht isolates (group 1) with an identical phenotype are classified into a new genus and species Natrarchaeobius chitinivorans gen. nov., sp. nov., with strain AArcht4 T as the type strain (JCM 32476 T = UNIQEM U966 T ), while the facultatively alkaliphilic strain AArcht-Sl T (group 2) — as a new species Natrarchaeobius halalkaliphilus sp. nov. (JCM 32477 T = UNIQEM U969 T ).

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“…Salinarchaeum sp. strain HArcht-Bsk1 was isolated from Lake Baskunchak (Russia), with a hypersaline chloride-sulfate environment 54 ; and N. baerhuensis IHC-005 from soda lakes in Inner Mongolia 32 .…”

Section: Discussionmentioning

confidence: 99%

Bacterial and archaeal communities in Lake Nyos (Cameroon, Central Africa)

Tiodjio

Sakatoku

Tanaka

et al. 2014

Sci Rep

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The aim of this study was to assess the microbial diversity associated with Lake Nyos, a lake with an unusual chemistry in Cameroon. Water samples were collected during the dry season on March 2013. Bacterial and archaeal communities were profiled using Polymerase Chain Reaction-Denaturing Gradient Gel Electrophoresis (PCR-DGGE) approach of the 16S rRNA gene. The results indicate a stratification of both communities along the water column. Altogether, the physico-chemical data and microbial sequences suggest a close correspondence of the potential microbial functions to the physico-chemical pattern of the lake. We also obtained evidence of a rich microbial diversity likely to include several novel microorganisms of environmental importance in the large unexplored microbial reservoir of Lake Nyos.

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Complete Genome Sequence of Salinarchaeum sp. Strain HArcht-Bsk1 ^T , Isolated from Hypersaline Lake Baskunchak, Russia

Cited by 11 publications

References 5 publications

Genome sequence of the model sulfate reducer Desulfovibrio gigas: a comparative analysis within the Desulfovibrio genus

Genome sequence of the model sulfate reducer Desulfovibrio gigas: a comparative analysis within the Desulfovibrio genus

Natrarchaeobius chitinivorans gen. nov., sp. nov., and Natrarchaeobius halalkaliphilus sp. nov., alkaliphilic, chitin-utilizing haloarchaea from hypersaline alkaline lakes

Bacterial and archaeal communities in Lake Nyos (Cameroon, Central Africa)

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Complete Genome Sequence of Salinarchaeum sp. Strain HArcht-Bsk1 T , Isolated from Hypersaline Lake Baskunchak, Russia

Cited by 11 publications

References 5 publications

Genome sequence of the model sulfate reducer Desulfovibrio gigas: a comparative analysis within the Desulfovibrio genus

Genome sequence of the model sulfate reducer Desulfovibrio gigas: a comparative analysis within the Desulfovibrio genus

Natrarchaeobius chitinivorans gen. nov., sp. nov., and Natrarchaeobius halalkaliphilus sp. nov., alkaliphilic, chitin-utilizing haloarchaea from hypersaline alkaline lakes

Bacterial and archaeal communities in Lake Nyos (Cameroon, Central Africa)

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Complete Genome Sequence of Salinarchaeum sp. Strain HArcht-Bsk1 ^T , Isolated from Hypersaline Lake Baskunchak, Russia