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An organism that thrives at high temperatures.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



an organism that lives at temperatures above 45°C, a situation that is lethal to most living things. Thermophiles include certain fish, invertebrates (worms, insects, and mollusks), microorganisms (protozoans, bacteria, actinomycetes, fungi, and algae), pteridophytes, and flowering plants. They inhabit hot springs, where the temperature reaches 70°C, thermal waters, the upper layers of soil intensely heated by the sun, and piles of organic matter (moist hay, grain, peat, or manure) heated as a result of the vital activities of thermogenic bacteria.

Thermophiles, in the broad sense of the word, include inhabitants of the tropics (except for ocean depths and high-mountain regions), saprophytes, and parasites of homeothermic (warmblooded) animals with body temperatures of 35°–40°C. Some thermophiles found at temperate and high latitudes may be considered relicts of warmer eras, when they were widely distributed.


Imshenetskii, A. A. Mikrobiologicheskie protsessy pri vysokikh temperaturakh. Moscow-Leningrad, 1944.
Mishustin, E. N., and V. T. Emtsev. Mikrobiologiia. Moscow, 1970.
Genkel’, P. A. Mikrobiologiia s osnovami virusologii. Moscow, 1974.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Generally thermophiles microorganisms with the ability to grow in the temperature range 70-45[degrees] so far, more than 450 strains of the identification [1].
Presence of thermophiles in extreme ecological niches such as hot springs has provided a potential bio tool for the analysis of protein stability.
The ability of different species to ferment in acid, neutral, and alkaline pH ranges, combined with the presence of thermophiles in the genus, has lead to the development of a variety of new commercial enzyme products with the desired temperature, pH activity, and stability properties to address several specific applications (SCHALLMEY et al., 2004).
Fecal coliforms count (FCC) being thermophiles grows at elevated temperature of 37[degrees]C.
The emphasis of a cold active protein is more on function than on structure and there has been much interest in thermophiles due to the possibility that life has a thermophilic origin, in deep-sea vents [3], and also due to their important biotechnological applications at higher temperatures.
Lab M's Iron Sulphite Agar is a versatile medium that can be used with the standard industry methodologies - Deep-Shake Culture or Attenborough and Scarr membrane filter methods and can be incubated at temperatures suitable for the detection of thermophiles or mesophiles.
These two genes distinguish Thermus aquaticus from other thermophiles, thus were isolated and cloned in a different host and their expressed enzymes were compared with a wild type.
While helpful to consumers, the seal is limited in that it does not differentiate from added probiotics--those beneficial bacteria that populate our intestinal tract and have been linked to specific benefits, such as improved digestion and immunity--and the starter culture bacteria (Lactobacillus bulgaricus and Streptococcus thermophiles) used in the fermentation process for producing yogurt.
Archaeal/archaea: Any of the unicellular prokaryotic microorganisms that is genetically distinct from bacteria and eukaryotes, and often inhabiting extreme environments (e.g., halophiles -salt resistant-, methanogens -produce methane-, and thermophiles -heat tolerant).
Psychrophiles, or organisms that live in extreme cold, were found, along with heat-loving thermophiles, which suggests the presence of hydrothermal vents deep in the lake.
Further chapters look at how to isolate, extract, and use halophilic microorganisms; the biotechnological applications of cold-adapted bacteria; ecology and biochemistry of thermophiles; applications in food production, biofuels, textile substrates, industrial recovery of metals, polymer production, and radiation resistance.
Hauksdottir et al., "Use of low nutrient enrichments to access novel amylase genes in silent diversity of thermophiles," World Journal of Microbiology and Biotechnology, vol.