Halomicroarcula laminariae sp. nov. and Halomicroarcula marina sp. nov., extremely halophilic archaea isolated from salted brown alga Laminaria and coastal saline-alkali lands

Xue, Ming; Hu, Yue; Li, Xinxin; Tan, Shun; Cheng, Ming; Hou, Jing; Cui, Heng‐Lin

doi:10.1099/ijsem.0.005889

Cited by 6 publications

(9 citation statements)

References 38 publications

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“…marismortui ATCC 43049 T and H. quadrata DSM 11927 T were 98.4 and 85.6 %, which confirms that these two strains represent the same species, as previously reported [3]. The AAI cutoff value for delineation of prokaryotes at species level has been established to be 95–96 % [67], but the threshold at genus level is not definite, although an approximate value of 65 % has been proposed [68], which yet is not applicable to all archaeal and bacterial families [69].…”

Section: Resultssupporting

confidence: 89%

“…nov., and that the species Haloarcula tradensis should be considered as a heterotypic synonym of Haloarcula argentinensis. In addition, our data support the recent study proposing the reclassification of Haloarcula salaria as a heterotypic synonym of Haloarcula argentinensis and Haloarcula quadrata as a heterotypic synonym of Haloarcula marismortui [3].…”

Section: Introductionsupporting

confidence: 90%

“…3) was reconstructed based on 1061 single-copy core-orthologous protein sequences and showed that strain S1AR25-5A T clustered with H. mannanilytica MD130-1 T , but far enough as to constitute a new species within the genus Haloarcula. In addition, the tree topology revealed that H. argentinensis DSM 12282 T , H. tradensis JCM 15760 T and H. salaria JCM 15759 T grouped tightly together, as well as H. marismortui ATCC 43049 T and H. quadrata DSM 11927 T , which confirms the latest results of Ma et al [3] proposing H. salaria and H. quadrata as later heterotypic synonyms of H. argentinensis and H. marismortui, respectively. Moreover, the phylogenomic position of H. tradensis JCM 15760 T suggests that it could represent another heterotypic synonym of H. argentinensis.…”

Section: Phylogenomic Analysessupporting

confidence: 83%

“…quadrata DSM 11927 T , which confirms the latest results of Ma et al . [3] proposing H. salaria and H.…”

Section: Resultsmentioning

confidence: 99%

“…Currently, this genus includes 12 species according to the List of Prokaryotic names with Standing in Nomenclature [2]. However, very recently, the species Haloarcula salaria and Haloarcula quadrata have been proposed as later heterotypic synonyms of Haloarcula argentinensis and Haloarcula marismortui, respectively [3]. The species of the genus Haloarcula were isolated from hypersaline habitats, including solar salterns, salt lakes, the Dead Sea, salt flats and salted food [1,[4][5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Haloarcula terrestris sp. nov. and reclassification of a Haloarcula species based on a taxogenomic approach

Straková,

Galisteo,

de la Haba

et al. 2023

International Journal of Systematic and Evolutionary Microbiology

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An extremely halophilic archaeon, strain S1AR25-5AT, was isolated from a hypersaline soil sampled in Odiel Saltmarshes Natural Area (Huelva, Spain). The cells were Gram-stain-negative, motile, pleomorphic rods. Cell growth was observed in the presence of 15–30 % (w/v) NaCl [optimum, 25 % (w/v) NaCl], at pH 6.0–9.0 (optimum, pH 6.5–7.5) and at 25–50 °C (optimum, 37 °C). Based on the 16S rRNA and rpoB′ gene sequence comparisons, strain S1AR25-5AT was affiliated to the genus Haloarcula . Taxogenomic analysis, including comparison of the genomes and the phylogenomic tree based on the core-orthologous proteins, together with the genomic indices, i.e., orthologous average nucleotide identity, digital DNA–DNA hybridization and average amino acid identity, confirmed that strain S1AR25-5AT (=CCM 9249T=CECT 30619T) represents a new species of the genus Haloarcula , for which we propose the name Haloarcula terrestris sp. nov. The major polar lipids were phosphatidylglycerol, phosphatidylglycerol phosphate methyl ester, phosphatidylglycerol sulphate and an unidentified glycolipid, which correlated with the lipid profile of species of the genus Haloarcula . In addition, based on the modern approach in description of species in taxonomy of prokaryotes, the above mentioned genomic indexes indicated that the species Haloarcula tradensis should be considered as a heterotypic synonym of Haloarcula argentinensis .

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