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Halorhabdus rudnickae sp. nov., a halophilic archaeon isolated from a salt mine borehole in Poland

AutorAlbuquerque, Luciana; Kowalewicz-Kulbat, Magdalena; Drzewiecka, Dominika; Staczek, Pawel; D'Auria, Giuseppe; Rosselló-Mora, Ramón ; Costa, Milton S. da
Palabras claveHaloarchaea
Halorhabdus
Halorhabdus rudnickae sp. nov
Fecha de publicación1-mar-2016
EditorElsevier
CitaciónSystematic and Applied Microbiology 39(2): 100-105 (2016)
ResumenTwo halophilic archaea, designated strains WSM-64 and WSM-66, were isolated from a sample taken from a borehole in the currently unexploited Barycz mining area belonging to the >Wieliczka> Salt Mine Company, in Poland. Strains are red pigmented and form non-motile cocci that stain Gram-negative. Strains WSM-64 and WSM-66 showed optimum growth at 40 °C, in 20% NaCl and at pH 6.5-7.5. The strains were facultative anaerobes. The major polar lipids of the two strains were phosphatidylglycerol (PG2), phosphatidylglycerol phosphate methyl ester (PGP-Me) and sulfated diglycosyl diether (S-DGD). Menaquinone MK-8 was the major respiratory quinone. The DNA G+C content of strain WSM-64 was 61.2 mol% by HPLC method; 61.0 mol% by genome sequencing. Analysis of the almost complete 16S rRNA gene sequence indicated that the strains WSM-64 and WSM-66 (99.7% identity) represented a member of the genus Halorhabdus in the family Halobacteriaceae. Both strains formed a distinct cluster and were most closely related to Halorhabdus tiamatea SARL4B and Halorhabdus utahensis AX-2 (DSM 12940) (95.4% and 95.6%, respectively). ANI values of WSM-64 with the closest relative type strains were <78.5%. Based on 16S rRNA gene sequence and whole genome analyses, physiological and biochemical characteristics we describe a new species represented by strain WSM-64 (=DSM 29498 =CECT 8673) for which we propose the name Halorhabdus rudnickae sp. nov.
Versión del editorhttp://dx.doi.org/10.1016/j.syapm.2015.12.004
URIhttp://hdl.handle.net/10261/132747
DOI10.1016/j.syapm.2015.12.004
Identificadoresdoi: 10.1016/j.syapm.2015.12.004
issn: 1618-0984
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