Halorhabdus utahensis | |
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Species: | H. utahensis |
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Halorhabdus utahensis Wainø et al. 2000 [1] | |
Halorhabdus utahensis is a halophilic archaeon isolated from the Great Salt Lake in Utah. [2]
Halorhabdus utahensis (salt-loving rod) is a motile, Gram-negative, extremely halophilic archaeon that forms red, circular colonies. It grows at the temperatures between 17 and 55 °C, with optimal growth occurring at 50 °C. It can also grow over a pH range of 5.5–8.5 with the optimal pH value between 6.7 and 7.1. Further, with its extremely high salinity optimum of 27% NaCl, Halorhabdus has one of the highest reported salinity optima of any living organism.
The cells of H. utahensis are extremely pleomorphic, exhibiting any shape from irregular coccoid or ellipsoid to triangular, club-shaped or rod-shaped forms. The rod-shaped and ellipsoid cells are 2-10 by 0.5-1 μm and 1-2 by 1 μm in size, respectively, and the spherical cells have a diameter of approximately 1 μm. The archaeon uses only a limited range of substrates, such as glucose, xylose, and fructose, for growth, and is unique in its inability to utilize yeast extract or peptone. Other substances that did not stimulate the organism's growth include organic acids, amino acids, alcohols, glycogen, and starch.
Halobacterium is a genus in the family Halobacteriaceae.
Pyrobaculum is a genus of the Thermoproteaceae.
In taxonomy, Vulcanisaeta is a genus of the Thermoproteaceae.
Haloarcula is a genus of extreme halophilic Archaea in the class of Halobactaria.
Halococcus is a genus of the Halococcaceae.
Halopiger is a genus of archaeans in the family Natrialbaceae that have high tolerance to salinity.
Haloquadratum is a genus of archaean, belonging to the family Haloferacaceae. The first species to be identified in this group, Haloquadratum walsbyi, is unusual in that its cells are shaped like square, flat boxes.
Halorhabdus is a genus of halophilic archaea in the Haloarculaceae. With an extremely high salinity optimum of 27% NaCl, Halorhabdus has one of the highest reported salinity optima of any living organism.
In taxonomy, Natrialba is a genus of the Natrialbaceae. The genus consists of many diverse species that can survive extreme environmental niches, especially they are capable to live in the waters saturated or nearly saturated with salt (halophiles). They have certain adaptations to live within their salty environments. For example, their cellular machinery is adapted to high salt concentrations by having charged amino acids on their surfaces, allowing the cell to keep its water molecules around these components. The osmotic pressure and these amino acids help to control the amount of salt within the cell.
In taxonomy, Natronococcus is a genus of the Natrialbaceae.
In taxonomy, Halostagnicola is a genus of the Archaea.
Haloferax volcanii is a species of organism in the genus Haloferax in the Archaea.
Haloquadratum walsbyi is a species of Archaea in the genus Haloquadratum, known for its square shape and halophilic nature.
Methanohalophilus mahii is an obligately anaerobic, methylotrophic, methanogenic cocci-shaped archaeon of the genus Methanohalophilus that can be found in high salinity aquatic environments. The name Methanohalophilus is said to be derived from methanum meaning "methane" in Latin; halo meaning "salt" in Greek; and mahii meaning "of Mah" in Latin, after R.A. Mah, who did substantial amounts of research on aerobic and methanogenic microbes. The proper word in ancient Greek for "salt" is however hals (ἅλς). The specific strain type was designated SLP and is currently the only identified strain of this species.
Halobacterium noricense is a halophilic, rod-shaped microorganism that thrives in environments with salt levels near saturation. Despite the implication of the name, Halobacterium is actually a genus of archaea, not bacteria. H. noricense can be isolated from environments with high salinity such as the Dead Sea and the Great Salt Lake in Utah. Members of the Halobacterium genus are excellent model organisms for DNA replication and transcription due to the stability of their proteins and polymerases when exposed to high temperatures. To be classified in the genus Halobacterium, a microorganism must exhibit a membrane composition consisting of ether-linked phosphoglycerides and glycolipids.
Haloferax larsenii is a gram-negative, aerobic, neutrophilic, extremely halophilic archaeon. It was named in honor of Professor Helge Larsen, who pioneered research on halophiles.
Halostagnicola larsenii is a non-motile, aerobic, gram-negative, rod shaped archaeon. It is a halophilic, neutrophilic, chemo-organotroph and was isolated from samples taken from a saline lake in China. The etymology of the name comes from hals, halos Greek for salt, stagnum Latin for a piece of standing water, -cola Latin for inhabitant or dweller, and Larsenii named after the Norwegian microbiologist, Helge Larsen, who was a pioneer in research regarding halophiles.
Haloterrigena turkmenica is an aerobic chemo organotrophic archeon originally found in Turkish salt lakes.
Halorhabdus tiamatea is a halophilic archaeon isolated from the Red Sea. With its extremely high salinity optimum of 27% NaCl, Halorhabdus has one of the highest reported salinity optima of any living organism.
Halorubrum kocurii is a halophilic archaean belonging to the genus Halorubrum. This genus contains a total of thirty-seven different species, all of which thrive in high-salinity environments. Archaea belonging to this genus are typically found in hypersaline environments due to their halophilic nature, specifically in solar salterns. Halorubrum kocurii is a rod-shaped, Gram-negative archaeon. Different from its closest relatives, Halorubrum kocurii is non-motile and contains no flagella or cilia. This archaeon thrives at high pH levels, high salt concentrations, and moderate temperatures. It has a number of close relatives, including Halorubrum aidingense, Halorubrum lacusprofundi, and more.