title: Halovenus salina sp. nov., an extremely halophilic archaeon isolated from a saltern.
abstract: An extremely halophilic archaeon was isolated from a water sample of Isla Bacuta saltern in Huelva, Spain. Strain ASP54(T) is a novel red-pigmented, motile, rod-shaped, Gram-stain-negative and strictly aerobic haloarchaeon. Strain ASP54(T) grew in media containing 15-30% (w/v) salts and optimally with 25% (w/v) salts. It grew between pH 5.0 and 9.0 (optimally at pH 7.5) and at 20-40 °C (optimally at 37 °C). Phylogenetic analysis based on multi-locus sequence analysis (MLSA) and the comparison of 16S rRNA gene sequences revealed that strain ASP54(T) is most closely related to the genus Halovenus. The closest relatives were Halovenus aranensis EB27(T) (92.1% 16S rRNA gene sequence similarity), Halorientalis regularis TNN28(T) (92.1%), and Halorientalis persicus D108(T) (92.0%). The polar lipid pattern of strain ASP54(T) consisted of biphosphatidylglycerol, phosphatidylglycerol, phosphatidylglycerol phosphate methyl ester, phosphatidylglycerol sulfate, sulfated mannosyl glucosyl diether and a minor-phospholipid. The predominant respiratory quinone was menaquinone-8 (MK-8) (83%), and a minor amount of MK-8(VIII-H2) (17%) was also detected. The G+C content of the genomic DNA of this strain was 63.1 mol%. Based on the phenotypic, chemotaxonomic and phylogenetic data presented in this study, strain ASP54(T) represents a novel species of the genus Halovenus, for which the name Halovenus salina sp. nov. is proposed. The type strain is ASP54(T) ( = CEC(T) 8749(T) = IBRC-M 10946(T) = JCM 30072(T)).
authors.affiliation: Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Sevilla, 41012 Sevilla, Spain.
authors.forename: Carmen
authors.initials: C
authors.lastname: Infante-Domínguez
authors.affiliation: Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Sevilla, 41012 Sevilla, Spain.
authors.forename: Paulina
authors.initials: P
authors.lastname: Corral
authors.affiliation: Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Sevilla, 41012 Sevilla, Spain.
authors.forename: Cristina
authors.initials: C
authors.lastname: Sánchez-Porro
authors.affiliation: Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Sevilla, 41012 Sevilla, Spain.
authors.forename: Antonio
authors.initials: A
authors.lastname: Ventosa
mesh_terms: D000818:Animals; D001181:Arthropods; D001482:Base Composition; D019641:DNA, Archaeal / Q000235:genetics; D004269:DNA, Bacterial / Q000235:genetics; D005227:Fatty Acids / Q000737:chemistry; D006216:Halobacteriaceae / Q000145:classification / Q000302:isolation & purification; D008969:Molecular Sequence Data; D010743:Phospholipids; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D012965:Sodium Chloride; D013030:Spain
chemical_list: D019641:DNA, Archaeal; D004269:DNA, Bacterial; D005227:Fatty Acids; C407124:PGP-Me; D010743:Phospholipids; D012336:RNA, Ribosomal, 16S; D012965:Sodium Chloride