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  • Title: Natronomonas moolapensis sp. nov., non-alkaliphilic isolates recovered from a solar saltern crystallizer pond, and emended description of the genus Natronomonas.
    Author: Burns DG, Janssen PH, Itoh T, Minegishi H, Usami R, Kamekura M, Dyall-Smith ML.
    Journal: Int J Syst Evol Microbiol; 2010 May; 60(Pt 5):1173-1176. PubMed ID: 19667395.
    Abstract:
    Two isolates of non-alkaliphilic, extremely halophilic archaea, with very similar characteristics, were recovered from a marine solar saltern crystallizer. Cells were pleomorphic, motile and Gram-stain-negative and grew on a limited range of carbon sources, with pyruvate being the best substrate. Optimum growth occurred at 18-20 % (w/v) NaCl, pH 6.0-8.5 and 37-40 degrees C. Both isolates possessed typical archaeal lipids, and their 16S rRNA gene sequences were 99.8 % identical. Phylogenetic tree reconstructions indicated that they were most closely related to the haloalkaliphile Natronomonas pharaonis (97.5 % similarity to the type strain), but the different phenotypic properties and low DNA-DNA hybridization values between Nmn. pharaonis DSM 2160(T) and the two isolates suggested that they represent a novel species within the genus Natronomonas. The name Natronomonas moolapensis sp. nov. is proposed for these isolates, with the type strain being 8.8.11(T) (=JCM 14361(T) =CECT 7526(T) =DSM 18674(T)). An emended description of the genus Natronomonas is also provided.
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