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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo

Volume 73, Issue 5

sp. nov. and sp. nov., extremely halophilic archaea isolated from salted brown alga and coastal saline-alkali lands No Access

Abstract

Four extremely halophilic archaeal strains, LYG-108, LYG-24, DT1 and YSSS71, were isolated from salted produced in Lianyungang and saline soil from the coastal beach at Jiangsu, PR China. The four strains were found to be related to the current species of (showing 88.1–98.5% and 89.3–93.6% similarities, respectively) as revealed by phylogenetic analysis based on 16S rRNA and genes. These phylogenies were fully supported by the phylogenomic analysis, and the overall genome-related indexes (average nucleotide identity, DNA–DNA hybridization and average amino acid identity) among these four strains and the species were 77–84 %, 23–30 % and 71–83 %, respectively, clearly below the threshold values for species demarcation. Additionally, the phylogenomic and comparative genomic analyses revealed that YGH18 is related to the current species of rather than those of , Namwong . 2011 is a later heterotypic synonym of Ihara . 1997, and Oren . 1999 is a later heterotypic synonym of Oren . 1990. The major polar lipids of strains LYG-108, LYG-24, DT1 and YSSS71 were phosphatidylglycerol, phosphatidylglycerol phosphate methyl ester, phosphatidylglycerol sulphate, sulphated mannosyl glucosyl diether and additional glycosyl-cardiolipins. All these results showed that strains LYG-108 (=CGMCC 1.13607=JCM 32950) and LYG-24 (=CGMCC 1.13605=JCM 32949) represent a new species of the genus , for which the name sp. nov. is proposed; strains DT1 (=CGMCC 1.18928=JCM 35414) and YSSS71 (=CGMCC 1.18783=JCM 34915) also represent a new species of the genus , for which the name sp. nov. is proposed.

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): coastal saline-alkali land , Halomicroarcula laminariae sp. nov. , Halomicroarcula marina sp. nov. , halophilic archaea and salted brown alga
Funding
This study was supported by the:
  • National Natural Science Foundation of China (Award 32070003)
    • Principle Award Recipient: XueMa
© 2023 The Authors
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/content/journal/ijsem/10.1099/ijsem.0.005889
2023-05-19
2024-05-01
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Halomicroarcula laminariae sp. nov. and Halomicroarcula marina sp. nov., extremely halophilic archaea isolated from salted brown alga Laminaria and coastal saline-alkali lands
Int J Syst Evol Microbiol 73, 005889 (2023); https://doi.org/10.1099/ijsem.0.005889
/content/journal/ijsem/10.1099/ijsem.0.005889
/content/journal/ijsem/10.1099/ijsem.0.005889
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