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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo

Volume 73, Issue 9

gen. nov., sp. nov., sp. nov., sp. nov., sp. nov. and sp. nov., halophilic archaea isolated from salt lakes and soda lakes No Access

Abstract

Five halophilic archaeal strains (AGai3-5, KZCA101, CGA3, WLHS1 and WLHSJ1) were isolated from salt lakes and soda lakes in PR China. These strains had low 16S rRNA gene similarities (91.3–96.0 %) to closely related species of the family and may represent a new genus of the family. Phylogenetic and phylogenomic analyses revealed that these strains formed a distinct clade, separate from the nearby genera and . The average nucleotide identity, digital DNA–DNA hybridization and average amino acid identity (AAI) values among these five strains and the current members of the family were 72–90, 20–42 and 62–91 %, respectively, clearly below the threshold values for species demarcation. According to the critical value of AAI (≤76 %) proposed to differentiate genera within the family , it was further indicated that these strains represented a novel genus within the family. These strains could be distinguished from the related genera according to differential phenotypic characteristics. The major lipids of these strains were phosphatidic acid (PA), phosphatidylglycerol, phosphatidylglycerol phosphate methyl ester, mannosyl glucosyl diether (DGD-PA), sulphated DGD-1 (S-DGD-PA) and sulphated galactosyl mannosyl glucosyl diether. The phenotypic, chemotaxonomic, phylogenetic and phylogenomic features indicated that strains AGai3-5 (=CGMCC 1.16078=JCM 33549), KZCA101 (=CGMCC 1.17431=JCM 35074), CGA3 (=CGMCC 1.17463=JCM 34318), WLHS1 (=CGMCC 1.13780=JCM 33562) and WLHSJ1 (=CGMCC 1.13784=JCM 33563) represent five novel species of a new genus within the family , named gen. nov., sp. nov., sp. nov., sp. nov., sp. nov. and sp. nov., respectively.

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): halophilic archaea , Natrialbaceae , Natronosalvus , salt lake and soda lake
Funding
This study was supported by the:
  • National Natural Science Foundation of China (Award 32070003)
    • Principle Award Recipient: Heng-LinCui
© 2023 The Authors
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/content/journal/ijsem/10.1099/ijsem.0.006036
2023-09-20
2024-05-08
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Natronosalvus halobius gen. nov., sp. nov., Natronosalvus caseinilyticus sp. nov., Natronosalvus vescus sp. nov., Natronosalvus rutilus sp. nov. and Natronosalvus amylolyticus sp. nov., halophilic archaea isolated from salt lakes and soda lakes
Int J Syst Evol Microbiol 73, 006036 (2023); https://doi.org/10.1099/ijsem.0.006036
/content/journal/ijsem/10.1099/ijsem.0.006036
/content/journal/ijsem/10.1099/ijsem.0.006036
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