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'Candidatus Chloroploca mongolica' sp. nov. a new mesophilic filamentous anoxygenic phototrophic bacterium.

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Title: 'Candidatus Chloroploca mongolica' sp. nov. a new mesophilic filamentous anoxygenic phototrophic bacterium.
Authors: Bryantseva, Irina A1 (AUTHOR) bryantseva@mail.ru, Grouzdev, Denis S2 (AUTHOR), Krutkina, Maria S2 (AUTHOR), Ashikhmin, Aleksandr A3 (AUTHOR), Kostrikina, Nadezda A1 (AUTHOR), Koziaeva, Veronika V1 (AUTHOR), Gorlenko, Vladimir M1 (AUTHOR)
Source: FEMS Microbiology Letters. 8/15/2021, Vol. 368 Issue 16, p1-10. 10p.
Subjects: Photosynthetic bacteria, Candidatus, Nitrogen fixation, Anaerobic bacteria, Microbial mats, Glutamine synthetase, Quinone, Oxidoreductases
Geographic Terms: Mongolia
Abstract: A mesophilic filamentous anoxygenic phototrophic bacterium, designated M50-1, was isolated from a microbial mat of the Chukhyn Nur soda lake (northeastern Mongolia) with salinity of 5−14 g/L and pH 8.0−9.3. The organism is a strictly anaerobic phototrophic bacterium, which required sulfide for phototrophic growth. The cells formed short undulate trichomes surrounded by a thin sheath and containing gas vesicles. Motility of the trichomes was not observed. The cells contained chlorosomes. The antenna pigments were bacteriochlorophyll d and β- and γ-carotenes. Analysis of the genome assembled from the metagenome of the enrichment culture revealed all the enzymes of the 3-hydroxypropionate bi-cycle for autotrophic CO2 assimilation. The genome also contained the genes encoding a type IV sulfide:quinone oxidoreductase (sqrX). The organism had no nifHDBK genes, encoding the proteins of the nitrogenase complex responsible for dinitrogen fixation. The DNA G + C content was 58.6%. The values for in silico DNA‒DNA hybridization and average nucleotide identity between M50-1 and a closely related bacterium ' Ca. Chloroploca asiatica' B7-9 containing bacteriochlorophyll c were 53.4% and 94.0%, respectively, which corresponds to interspecies differences. Classification of the filamentous anoxygenic phototrophic bacterium M50-1 as a new ' Ca. Chloroploca' species was proposed, with the species name ' Candidatus Chloroploca mongolica' sp. nov. [ABSTRACT FROM AUTHOR]
Copyright of FEMS Microbiology Letters is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: 'Candidatus Chloroploca mongolica' sp. nov. a new mesophilic filamentous anoxygenic phototrophic bacterium.
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  Data: <searchLink fieldCode="AR" term="%22Bryantseva%2C+Irina+A%22">Bryantseva, Irina A</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> bryantseva@mail.ru</i><br /><searchLink fieldCode="AR" term="%22Grouzdev%2C+Denis+S%22">Grouzdev, Denis S</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Krutkina%2C+Maria+S%22">Krutkina, Maria S</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ashikhmin%2C+Aleksandr+A%22">Ashikhmin, Aleksandr A</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kostrikina%2C+Nadezda+A%22">Kostrikina, Nadezda A</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Koziaeva%2C+Veronika+V%22">Koziaeva, Veronika V</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gorlenko%2C+Vladimir+M%22">Gorlenko, Vladimir M</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22FEMS+Microbiology+Letters%22">FEMS Microbiology Letters</searchLink>. 8/15/2021, Vol. 368 Issue 16, p1-10. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Mongolia%22">Mongolia</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: A mesophilic filamentous anoxygenic phototrophic bacterium, designated M50-1, was isolated from a microbial mat of the Chukhyn Nur soda lake (northeastern Mongolia) with salinity of 5−14 g/L and pH 8.0−9.3. The organism is a strictly anaerobic phototrophic bacterium, which required sulfide for phototrophic growth. The cells formed short undulate trichomes surrounded by a thin sheath and containing gas vesicles. Motility of the trichomes was not observed. The cells contained chlorosomes. The antenna pigments were bacteriochlorophyll d and β- and γ-carotenes. Analysis of the genome assembled from the metagenome of the enrichment culture revealed all the enzymes of the 3-hydroxypropionate bi-cycle for autotrophic CO2 assimilation. The genome also contained the genes encoding a type IV sulfide:quinone oxidoreductase (sqrX). The organism had no nifHDBK genes, encoding the proteins of the nitrogenase complex responsible for dinitrogen fixation. The DNA G + C content was 58.6%. The values for in silico DNA‒DNA hybridization and average nucleotide identity between M50-1 and a closely related bacterium ' Ca. Chloroploca asiatica' B7-9 containing bacteriochlorophyll c were 53.4% and 94.0%, respectively, which corresponds to interspecies differences. Classification of the filamentous anoxygenic phototrophic bacterium M50-1 as a new ' Ca. Chloroploca' species was proposed, with the species name ' Candidatus Chloroploca mongolica' sp. nov. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of FEMS Microbiology Letters is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1093/femsle/fnab107
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      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 10
        StartPage: 1
    Subjects:
      – SubjectFull: Photosynthetic bacteria
        Type: general
      – SubjectFull: Candidatus
        Type: general
      – SubjectFull: Nitrogen fixation
        Type: general
      – SubjectFull: Anaerobic bacteria
        Type: general
      – SubjectFull: Microbial mats
        Type: general
      – SubjectFull: Glutamine synthetase
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      – SubjectFull: Quinone
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      – SubjectFull: Oxidoreductases
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      – SubjectFull: Mongolia
        Type: general
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      – TitleFull: 'Candidatus Chloroploca mongolica' sp. nov. a new mesophilic filamentous anoxygenic phototrophic bacterium.
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            NameFull: Bryantseva, Irina A
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              M: 08
              Text: 8/15/2021
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              Y: 2021
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