Hoyosella lacisalsi sp. nov., a halotolerant actinobacterium isolated from the Lake Gudzhirganskoe

Int J Syst Evol Microbiol. 2021 Dec;71(12). doi: 10.1099/ijsem.0.005145.


A Gram-stain-positive, aerobic, non-motile, non-spore-forming and coccus-shaped strain, designated strain G463T, was isolated from the rhizosphere soil of Salicornia europaea L. collected from Lake Gudzhirganskoe in Siberia. Based on 16S rRNA gene phylogeny, strain G463T belonged to the genus Hoyosella, with the highest 16S rRNA gene sequence similarity to Hoyosella altamirensis DSM 45258T (96.1%). The major fatty acids were C17:1 ω8c, C16:0, C15 : 0 and C17:0. The strain contained meso-diaminopimelic acid as the cell-wall diagnostic diamino acid and arabinose, galactose and ribose as the whole-cell sugars. MK-8 and MK-7 were the predominant menaquinones. The polar lipid profile comprised diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, phosphatidylinositol, one unidentified phosphoglycolipid, two unidentified glycolipids and several unidentified lipids. Acetyl was the muramyl residue. Mycolic acids (C28-C34) were present. The G+C content of the genomic DNA was 68.3 mol%. Based on its phylogenetic, phenotypic and chemotaxonomic features, strain G463T was considered to represent a novel species of the genus Hoyosella, for which the name Hoyosella lacisalsi sp. nov. is proposed. The type strain is G463T (=JCM 33650T=CGMCC 1.17230T).

Keywords: Hoyosella lacisalsi; Lake Gudzhirganskoe; actinobacteria; taxonomy.

MeSH terms

  • Bacterial Typing Techniques
  • Base Composition
  • DNA, Bacterial / genetics
  • Fatty Acids / chemistry
  • Lakes* / microbiology
  • Mycobacteriaceae / classification*
  • Mycobacteriaceae / isolation & purification
  • Phospholipids / chemistry
  • Phylogeny*
  • RNA, Ribosomal, 16S / genetics
  • Sequence Analysis, DNA
  • Siberia
  • Vitamin K 2 / chemistry


  • DNA, Bacterial
  • Fatty Acids
  • Phospholipids
  • RNA, Ribosomal, 16S
  • Vitamin K 2