Lipids of extremely halophilic archaeobacteria from saline environments in India: A novel glycolipid in Natronobacterium strains

Upasani, Vivek N.; Desai, Suresh G.; Moldoveanu, Natalia; Kates, Morris

doi:10.1099/13500872-140-8-1959

Cited by 52 publications

(26 citation statements)

References 14 publications

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“…For example, a 136-linked diglucosyl sugar was identified in one of the glycolipids of a Natronobacterium strain from India (41). Extreme halophilic archaea isolated from Spanish salt ponds were found to contain a number of glycolipids, including a sulfated diglycosyl diether termed S-DGD (19).…”

Section: Discussionmentioning

confidence: 99%

2-Sulfotrehalose, a novel osmolyte in haloalkaliphilic archaea

et al. 1997

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A novel 131 ␣-linked glucose disaccharide with sulfate at C-2 of one of the glucose moieties, 1-(2-O-sulfo-␣-D-glucopyranosyl)-␣-D-glycopyranose, was found to be the major organic solute accumulated by a Natronococcus sp. and several Natronobacterium species. The concentration of this novel disaccharide, termed sulfotrehalose, increased with increasing concentrations of external NaCl, behavior consistent with its identity as an osmolyte. A variety of noncharged disaccharides (trehalose, sucrose, cellobiose, and maltose) were added to the growth medium to see if they could suppress synthesis and accumulation of sulfotrehalose. Sucrose was the most effective in suppressing biosynthesis and accumulation of sulfotrehalose, with levels as low as 0.1 mM being able to significantly replace the novel charged osmolyte. Other common osmolytes (glycine betaine, glutamate, and proline) were not accumulated or used for osmotic balance in place of the sulfotrehalose by the halophilic archaeons.

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Section: Discussionmentioning

confidence: 99%

2-Sulfotrehalose, a novel osmolyte in haloalkaliphilic archaea

et al. 1997

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“…The lipid composition of membranes from only a few halo(alkali)philic Archaea has been analyzed (Upasani et al 1994;Kates 1996). The lipid species present in the phylogenetically closely related Hr.…”

Section: Discussionmentioning

confidence: 99%

Lipid membranes from halophilic and alkali-halophilic Archaea have a low H + and Na + permeability at high salt concentration

et al. 1999

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Citation for published version (APA): van de Vossenberg, J. L. C. M., Driessen, A. J. M., Grant, W. D., & Konings, W. N. (1999). Lipid membranes from halophilic and alkali-halophilic Archaea have a low H+ and Na+ permeability at high salt concentration. Extremophiles, 3(4), 253 -257. DOI: 10.1007/s007920050124 Copyright Other than for strictly personal use, it is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license (like Creative Commons).Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum. AbstractThe influence of pH and the salt concentration on the proton and sodium ion permeability of liposomes formed from lipids of the halophile Halobacterium salinarum and the haloalkaliphile Halorubrum vacuolatum were studied. In contrast with liposomes formed from Escherichia coli lipids, liposomes formed from halophilic lipids remained stable up to 4 M of NaCl and KCl. The proton permeability of the liposomes from lipids of halophiles was independent of the salt concentration and was essentially constant between pH 7 and pH 9. The sodium ion permeability increased with the salt concentration but was 10-to 100 fold lower than the proton permeability. It is concluded that the membranes of halophiles are stable over a wide range of salt concentrations and at elevated pH values and are well adapted to the halophilic conditions.

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“…Archaetidic acid was reported from Halobacterium cutirubrum and other halophilic archaea (Fredrickson et al, 1989 ;Lanzotti et al, 1989) and from Methanobacterium thermoautotrophicum (Nishihara & Koga, 1990). Archaetidyl glycerol has been reported from species of Halobacterium (Kushwaha et al, 1982), Methanosarcina barkeri (Nishihara & Koga, 1995), Methanospirillum hungatei (Kushwaha et al, 1981) and an unidentified, extremely halophilic archaeon (Upasani et al, 1994). Lipids characteristic for the genera Thermoplasma and Picrophilus, i.e.…”

Section: Characteristicmentioning

confidence: 99%

Ferroplasma acidiphilum gen. nov., sp. nov., an acidophilic, autotrophic, ferrous-iron-oxidizing, cell-wall-lacking, mesophilic member of the Ferroplasmaceae fam. nov., comprising a distinct lineage of the Archaea.

Golyshina

Pivovarova²,

Karavaiko³

et al. 2000

International Journal of Systematic and Evolutionary Microbiology

289

167

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An isolate of an acidophilic archaeon, strain Y T , was obtained from a bioleaching pilot plant. The organism oxidizes ferrous iron as the sole energy source and fixes inorganic carbon as the sole carbon source. The optimal pH for growth is 17, although growth is observed in the range pH 13 to 22. The cells are pleomorphic and without a cell wall. 16S rRNA gene sequence analysis showed this strain to cluster phylogenetically within the order ' Thermoplasmales ' sensu Woese, although with only 899 and 872 % sequence identity, respectively, to its closest relatives, Picrophilus oshimae and Thermoplasma acidophilum. Other principal differences from described species of the ' Thermoplasmales ' are autotrophy (strain Y T is obligately autotrophic), the absence of lipid components typical of the ' Thermoplasmales ' (no detectable tetraethers) and a lower temperature range for growth (growth of strain Y T occurs between 15 and 45 SC). None of the sugars, amino acids, organic acids or other organic compounds tested was utilized as a carbon source. On the basis of the information described above, the name Ferroplasma acidiphilum gen. nov., sp. nov. is proposed for strain Y T within a new family, the Ferroplasmaceae fam. nov. Strain Y T is the type and only strain of F. acidiphilum. This is the first report of an autotrophic, ferrous-ironoxidizing, cell-wall-lacking archaeon.

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Lipids of extremely halophilic archaeobacteria from saline environments in India: A novel glycolipid in Natronobacterium strains

Cited by 52 publications

References 14 publications

2-Sulfotrehalose, a novel osmolyte in haloalkaliphilic archaea

2-Sulfotrehalose, a novel osmolyte in haloalkaliphilic archaea

Lipid membranes from halophilic and alkali-halophilic Archaea have a low H + and Na + permeability at high salt concentration

Ferroplasma acidiphilum gen. nov., sp. nov., an acidophilic, autotrophic, ferrous-iron-oxidizing, cell-wall-lacking, mesophilic member of the Ferroplasmaceae fam. nov., comprising a distinct lineage of the Archaea.

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