Anaerobic alkalithermophiles, a novel group of extremophiles

@article{Wiegel1998AnaerobicAA,
  title={Anaerobic alkalithermophiles, a novel group of extremophiles},
  author={Juergen Wiegel},
  journal={Extremophiles},
  year={1998},
  volume={2},
  pages={257-267}
}
  • J. Wiegel
  • Published 2 April 1998
  • Biology, Medicine
  • Extremophiles
Abstract Although some anaerobic and aerobic mesophiles have long been known to grow at alkaline pH (above 9.5), little was known until recently about thermophilic alkaliphiles, termed now alkalithermophiles. This minireview describes presently known and recently validly described anaerobic alkalithermophilic bacteria (pHopt55C > 8.5; Topt > 55°C) and alkalitolerant thermophiles (pHopt55C < 8.5 but pHmax55C above 9.0). Some of these are widely distributed, but others have been isolated (thus… 
Ecology and diversity of anaerobic alkali-thermophiles
TLDR
The various bacteria were isolated from a large variety of environments: e.g., C. paradoxum and C. thermoalkaliphilum were isolated only from mesobiotic sewage sludge containing up to 10 4 CPU/ml sludge, and the fast-growing T. celere was found in slightly acidic and slightly alkaline hot springs, manure compost and rivers from 4 continents.
Anaerobic halophilic alkalithermophiles
TLDR
The recent isolation of two novel anaerobic, halophilic alkalithermophiles, Natranaerobius thermophilus and Halonatronum saccharophilum, will provide a platform for detailed biochemical, genomic, and proteomic experiments, allowing a greater understanding of the novel adaptive mechanisms undoubtedly employed by polyextremophiles.
Alkaliphiles: Some Applications of Their Products for Biotechnology
  • K. Horikoshi
  • Biology, Medicine
    Microbiology and Molecular Biology Reviews
  • 1999
TLDR
The cell surface may play a key role in keeping the intracellular pH value in the range between 7 and 8.5, allowing alkaliphiles to thrive in alkaline environments, although adaptation mechanisms have not yet been clarified.
Industrial Important Enzymes from Alkaliphiles – An overview
Alkaliphiles are an interesting group of extremophilic organisms that thrive at pH of 9.0 and above and which are represented by prokaryotes, eukaryotes, and archaea. It is clear that a variety of
Industrial Important Enzymes from Alkaliphiles - An overview
TLDR
An insight is provided into the huge diversity of alkaliphilic bacteria, the varied products obtained from them, and the need for further investigations on this interesting group of bacteria.
Anaerobranca californiensis sp. nov., an anaerobic, alkalithermophilic, fermentative bacterium isolated from a hot spring on Mono Lake.
TLDR
A novel, obligately anaerobic, alkalithermophilic, chemo-organotrophic bacterium was isolated from the sediment of an alkaline hot spring located on Paoha Island in Mono Lake, California, USA and represents a novel species, Anaerobranca californiensis sp.
Anaerobranca zavarzinii sp. nov., an anaerobic, alkalithermophilic bacterium isolated from Kamchatka thermal fields.
TLDR
It was concluded that isolate JW/VK-KS5Y(T) (=VKM B-2436(T)=DSM 18970(T)) represents the type strain of a novel species, Anaerobranca zavarzinii sp.
Alkaliphiles
  • K. Horikoshi
  • Proceedings of the Japan Academy. Series B, Physical and Biological Sciences
  • 2004
The term alkaliphile is used for microorganisms that grow optimally or very well at pH values above 9, but cannot grow or grow only slowly at the near neutral pH value of 6.5. Alkaliphiles include
Life under Multiple Extreme Conditions: Diversity and Physiology of the Halophilic Alkalithermophiles
TLDR
This minireview highlights the ecology and growth characteristics of the extremely halophilic alkalithermophiles that have been isolated thus far, and their roles in resistance to the combined stressors of high salinity, alkaline pH, and high temperature are discussed.
Halophiles Exposed Concomitantly to Multiple Stressors: Adaptive Mechanisms of Halophilic Alkalithermophiles
The anaerobic halophilic alkalithermophiles are a novel group of “poly-extremophiles.” The recent isolation of novel anaerobic halophilic alkalithermophiles belonging to the genera Natranaerobius and
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