Four halophilic archaeal strains YCN1, YCN58, LT38, and LT62 were isolated from Yuncheng Salt Lake (Shanxi, China) and Tarim Basin (Xinjiang, China), respectively. Phylogenetic and phylogenomic analyses showed that these four strains tightly cluster with related species of Halobacterium, Natronomonas, Halorientalis, and Halobellus, respectively. The AAI, ANI, and dDDH values between these four strains and their related species of respective genera were lower than the proposed threshold values for species delineation. Strains YCN1, YCN58, LT38, and LT62 could be differentiated from the current species of Halobacterium, Natronomonas, Halorientalis, and Halobellus, respectively, based on the comparison of diverse phenotypic characteristics. The polar lipid profiles of these four strains were closely similar to those of respective relatives within the genera Halobacterium, Natronomonas, Halorientalis, and Halobellus, respectively. The phenotypic, phylogenetic, and genome-based analyses indicated that strains YCN1, YCN58, LT38, and LT62 represent respective novel species within the genera Halobacterium, Natronomonas, Halorentalis, and Halobellus, for which the names Halobacterium yunchengense sp. nov., Natronomonas amylolytica sp. nov., Halorientalis halophila sp. nov., and Halobellus salinisoli sp. nov. are proposed, respectively.
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http://dx.doi.org/10.1007/s00792-024-01347-1 | DOI Listing |
Extremophiles
June 2024
School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, 212013, People's Republic of China.
FEBS Lett
September 2023
College of Pharmaceutical Sciences, Matsuyama University, Japan.
The cell membrane of Halobacterium salinarum contains a retinal-binding photoreceptor, sensory rhodopsin II (HsSRII), coupled with its cognate transducer (HsHtrII), allowing repellent phototaxis behavior for shorter wavelength light. Previous studies on SRII from Natronomonas pharaonis (NpSRII) pointed out the importance of the hydrogen bonding interaction between Thr204 and Tyr174 in signal transfer from SRII to HtrII. Here, we investigated the effect on phototactic function by replacing residues in HsSRII corresponding to Thr204 and Tyr174 .
View Article and Find Full Text PDFFront Microbiol
October 2021
Institute for Integrative Systems Biology (I2SysBio), Universitat de València-CSIC, Paterna, Spain.
Commercial table salt is a condiment with food preservative properties by decreasing water activity and increasing osmotic pressure. Salt is also a source of halophilic bacteria and archaea. In the present research, the diversity of halotolerant and halophilic microorganisms was studied in six commercial table salts by culture-dependent and culture-independent techniques.
View Article and Find Full Text PDFMicroorganisms
July 2021
Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Sevilla, 41004 Sevilla, Spain.
Prokaryotic communities and physico-chemical characteristics of 30 brine samples from the thalassohaline Tuz Lake (Salt Lake), Deep Zone, Kayacik, Kaldirim, and Yavsan salterns (Turkey) were analyzed using 16S rRNA amplicon sequencing and standard methods, respectively. (98.41% of reads) was found to dominate in these habitats in contrast to the domain (1.
View Article and Find Full Text PDFFront Microbiol
August 2020
UMR CNRS 6023, Laboratoire Microorganismes: Génome et Environnement (LMGE), Université Clermont Auvergne, Clermont-Ferrand, France.
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