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Thermus is a genus of thermophilic bacteria. It is one of several bacteria belonging to the Deinococcus–Thermus group. It includes the following species:
Brevibacillus is a genus of Gram-positive bacteria in the family Paenibacillaceae.
Brevibacillus brevis is a Gram-positive, aerobic, motile, spore-forming, rod-shaped bacterium commonly found in soil, air, water, and decaying matter. It is rarely associated with infectious diseases. The antibiotics gramicidin and tyrocidine were first isolated from it. It produces β-cyclodextrin glucanotransferase, an enzyme that catalyzes the conversion, degradation, and cyclization of starch into β-cyclodextrin.
Geobacillus stearothermophilus is a rod-shaped, Gram-positive bacterium and a member of the division Firmicutes. The bacterium is a thermophile and is widely distributed in soil, hot springs, ocean sediment, and is a cause of spoilage in food products. It will grow within a temperature range of 30 to 75 °C. Some strains are capable of oxidizing carbon monoxide aerobically. It is commonly used as a challenge organism for sterilization validation studies and periodic check of sterilization cycles. The biological indicator contains spores of the organism on filter paper inside a vial. After sterilizing, the cap is closed, an ampule of growth medium inside of the vial is crushed and the whole vial is incubated. A color and/or turbidity change indicates the results of the sterilization process; no change indicates that the sterilization conditions were achieved, otherwise the growth of the spores indicates that the sterilization process has not been met. Recently a fluorescent-tagged strain, Rapid Readout(tm), is being used for verifying sterilization, since the visible blue fluorescence appears in about one-tenth the time needed for pH-indicator color change, and an inexpensive light sensor can detect the growing colonies.
Thermoanaerobacter kivui is a thermophilic, anaerobic, non-spore-forming species of bacteria.
Amphibacillus xylanus is a gram-positive-spore forming bacterium with cells 0.3 μm to 0.5 μm in diameter and 0.9 μm to 1.9 μm in length. A. xylanus is a facultative anaerobic organism which can grow in several different environments. Its success in a multitude of environments stems from multiple metabolic pathways, each with high ATP yields. It is flagellated and motile. It grows best at pH 8.0-10.0 but not at pH 7.0. It is catalase and oxidase negative. This helps to explain better the unique method of metabolism on which the organism relies.
Thermacetogenium phaeum is a bacterium, the type species of its genus. It is strictly anaerobic, thermophilic, syntrophic and acetate-oxidizing. Its cells are gram-positive, endospore-forming and rod-shaped. Its type strain is PBT. It has a potential biotechnological role.
Deferribacter thermophilus is an iron-reducing bacteria. It is a manganese- and iron-reducing bacterium. It is thermophilic and anaerobic bacterium, its type strain being designated as strain BMAT. The cells are straight to bent rods.
Alcanivorax pacificus is a pyrene-degrading marine gammaprotobacterium. It is of the genus Alcanivorax, a group of marine bacteria known for degrading hydrocarbons. When originally proposed, the genus Alcanivorax comprised six distinguishable species. However, A. pacificus, a seventh strain, was isolated from deep sea sediments in the West Pacific Ocean by Shanghai Majorbio Bio-pharm Technology Co., Ltd. in 2011. A. pacificus’s ability to degrade hydrocarbons can be employed for cleaning up oil-contaminated oceans through bioremediation. The genomic differences present in this strain of Alcanivorax that distinguish it from the original consortium are important to understand to better utilize this bacteria for bioremediation.
"Syntrophothermus lipocalidus" is a bacterium, the type species and only currently described species in its genus. It is thermophilic, syntrophic, fatty-acid-oxidizing and anaerobic, and utilises isobutyrate. TGB-C1T is its type strain. Its genome has been fully sequenced.
Aminobacter aganoensis is a bacterium from the genus of Aminobacter which was isolated from soil.
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Gracilibacillus is a genus of bacteria within the phylum Firmicutes. Species within this genus are generally halotolerant.
Clostridium stercorarium is a cellulolytic thermophilic bacterium. It is anaerobic, spore-forming and saccharoclastic, with cells being rod-shaped and 0.7 to 0.8 by 2.7 to 7.7 µm in size. Its genome has been sequenced.
Desulfacinum infernum is a thermophilic sulfate-reducing bacterium, the type species of its genus. Its cells are oval, 1.5 by 2.5-3μm, non-motile and gram-negative.
Cryobacterium psychrophilum is the type species of the bacterial genus Cryobacterium. It is an obligately psychrophilic, Gram-positive irregular rod-shaped actinomycete, with type strain JCM 1463.
Hyphomicrobium is a genus of Gram-negative, non-spore-forming, rod-shaped bacteria from the family of Hyphomicrobiaceae. It has a large polar or sub-polar filiform prostheca very similar to that of Caulobacter. In addition to having a nutritional function, the prostheca also plays a role in the initiation of DNA replication.
Thermonema lapsum is a Gram-negative and thermophilic bacterium from the genus of Thermonema which has been isolated from a hot spring in Rotorua in New Zealand.Homospermidine and homospermine are the major polyamines of Thermonema lapsum
Alicyclobacillus acidocaldarius is a species of Gram positive, strictly aerobic, bacterium. The bacteria are acidophilic, thermophilic, and produce endospores. The first identified strains of A. acidocaldarius were from geysers in Yellowstone National Park and fumerole soil in Hawaii Volcano National Park. The species was originally classified as Bacillus acidocaldarius in 1971, but further 16S rRNA studies found that the species belonged in the newly created genus Alicyclobacillus. The species name is derived from the Latin acidum (acid) and caldarius, referring to the acidic and high temperature environments from which it was first isolated. Thomas D. Brock was one of the researchers who first categorized the species; his discovery of Thermus aquaticus allowed for other researchers to discover Taq polymerase and polyermase chain reaction (PCR).
References
- ↑ Shida, O.; Takagi, H.; Kadowaki, K.; Udaka, S.; Nakamura, L.; Komagata, K. (January 1995). "Proposal of Bacillus reuszeri sp. nov., Bacillus formosus sp. nov., nom. rev., and Bacillus borstelensis sp. nov., nom. rev". International Journal of Systematic Bacteriology. 43 (1): 93–100. doi: 10.1099/00207713-45-1-93 .
- ↑ Shida, O.; Takagi, H.; Kadowaki, K.; Komagata, K. (October 1996). "Proposal for two new genera, Brevibacillus gen. nov. and Aneurinibacillus gen. nov". International Journal of Systematic Bacteriology. 46 (4): 939–946. doi: 10.1099/00207713-46-4-939 . PMID 8863420.
- ↑ "Brevibacillus borstelensis". NCBI genome. National Center for Biotechnology Information, U.S. National Library of Medicine. Retrieved November 2, 2014.
- ↑ Hadad, D.; Geresh, S.; Sivan, A. (May 2005). "Biodegradation of polyethylene by the thermophilic bacterium Brevibacillus borstelensis". Journal of Applied Microbiology. 98 (5): 1093–1100. doi: 10.1111/j.1365-2672.2005.02553.x . PMID 15836478.
