Haloterrigena hispanica sp. nov., an extremely halophilic archaeon from Fuente de Piedra, southern Spain.

Abstract

An extremely halophilic archaeon belonging to the order Halobacteriales was isolated from Fuente de Piedra salt lake, Spain. This strain, designated FP1(T), was a pleomorphic coccoid, neutrophilic and required at least 15 % (w/v) NaCl for growth. Strain FP1(T) grew at 37-60 degrees C, with optimal growth at 50 degrees C. Mg(2+) was not required, but growth was observed with up to 10 % (w/v) MgSO(4). Polar lipid analysis revealed the presence of mannose-6-sulfate(1-2)-glucose glycerol diether as a major glycolipid. Both C(20)C(20) and C(20)C(25) core lipids were present. The genomic DNA G+C content was 62.0 mol%. Phylogenetic analysis based on comparison of 16S rRNA gene sequences demonstrated that the isolate was most closely related to species of the genus Haloterrigena. DNA-DNA reassociation values between strain FP1(T) and the most closely related species of the genus Haloterrigena (Haloterrigena thermotolerans, Haloterrigena saccharevitans and Haloterrigena limicola) were lower than 29 %. It is therefore considered that strain FP1(T) represents a novel species of the genus Haloterrigena, for which the name Haloterrigena hispanica sp. nov. is proposed. The type strain is FP1(T) (=DSM 18328(T)=ATCC BAA-1310(T)).

• Authors: Ida Romano, Annarita Poli, Ilaria Finore, F Javier Huertas, Agata Gambacorta, Salvatore Pelliccione, Giancarlo Nicolaus, Licia Lama, Barbara Nicolaus
• Journal: International journal of systematic and evolutionary microbiology (Int J Syst Evol Microbiol) Vol. 57 Issue Pt 7 Pg. 1499-1503 (Jul 2007) ISSN: 1466-5026 [Print] England
• PMID: 17625183 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• DNA, Archaeal
• DNA, Ribosomal
• Glycolipids
• RNA, Archaeal
• RNA, Ribosomal, 16S
• Magnesium Chloride
• Sodium Chloride

Topics

• Base Composition
• DNA, Archaeal (chemistry, isolation & purification)
• DNA, Ribosomal (chemistry, isolation & purification)
• Genes, rRNA
• Glycolipids (analysis)
• Halobacteriaceae (chemistry, classification, isolation & purification, physiology)
• Magnesium Chloride (metabolism)
• Molecular Sequence Data
• Nucleic Acid Hybridization
• Phylogeny
• RNA, Archaeal (genetics)
• RNA, Ribosomal, 16S (genetics)
• Sequence Analysis, DNA
• Sequence Homology, Nucleic Acid
• Sodium Chloride (metabolism)
• Spain
• Temperature
• Water Microbiology