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Based on species Thermomicrobium roseum (type species) and Sphaerobacter thermophilus, this bacteria class has the following description: [3] [4] The class Thermomicrobia subdivides into two orders with validly published names: Thermomicrobiales Garrity and Holt 2001 and Sphaerobacterales Stackebrandt, Rainey and Ward-Rainey 1997 .
The first edition of the Bacteriological Code in 1947 set a standardised system and authority for the classification of Bacteria. [30] A. R. Prévot's system (1958) [31] [32]) had four subphyla and eight classes, as follows: Eubacteriales (classes Asporulales and Sporulales) Mycobacteriales (classes Actinomycetales, Myxobacteriales, and ...
A thermophile is a type of extremophile that thrives at relatively high temperatures, between 41 and 122 °C (106 and 252 °F). [1] [2] Many thermophiles are archaea, though some of them are bacteria and fungi. Thermophilic eubacteria are suggested to have been among the earliest bacteria. [3]
This article lists the orders of the Bacteria.The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) [1] and National Center for Biotechnology Information (NCBI) [2] and the phylogeny is based on 16S rRNA-based LTP release 132 by The All-Species Living Tree Project.
Although Thermotogota species exhibit Gram-negative staining, they are bounded by a single-unit lipid membrane, hence they are monoderm bacteria. [3] [7] [8] Because of the ability of some Thermotogota species to thrive at high temperatures, they are considered attractive targets for use in industrial processes. [9]
All bacteria have their own optimum environmental surroundings and temperatures in which they thrive. Many factors are responsible for a given organism's optimal temperature range, but evidence suggests that the expression of particular genetic elements ( alleles ) can alter the temperature-sensitive phenotype of the organism.
The strains of the genus Thermus are generally isolated from hydrothermal areas where the range of water temperature is 55–70 °C and that of pH is 5.0–10.5. [27]The first isolate of the genus Thermus was isolated from hydrothermal areas in Yellowstone National Park. [5]
These bacteria can be found in a variety of geothermal environments. These Thermophiles require a more stringent DNA repair system, as DNA becomes unstable at high temperatures. The GC-content of this bacterium is about 69%, this contributes to the thermostability of this bacterium's genome.