Biology:Halanaerobium hydrogenoformans
| Halanaerobium hydrogenoformans | |
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| Scientific classification | |
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| Phylum: | |
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| Order: | Halanaerobiales
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| Family: | Halanaerobiaceae
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| Species: | H. hydrogeninformans
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| Binomial name | |
| Halanaerobium hydrogeninformans Brown et al. 2011[1]
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Halanaerobium hydrogeninformans is alkaliphilic bacterium that is capable of biohydrogen production at (pH 11 and 7% (w/v) sodium chloride (NaCl) salts) and 33 °C (91 °F);[2] it is commonly found in haloalkaline lakes.
H. hydrogeninformans was first discovered by Melanie Mormile, professor of biological sciences at Missouri University of Science and Technology and her team, from Soap Lake, Washington (state) .[3]
Microbiology
Halanaerobium hydrogeninformans is obligatory anaerobic, gram positive, non motile, non-sporulating, elongated rod bacterium,[2] that can tolerate the extreme conditions of both high salinity and alkalinity of its environment, with optimal growth at pH 11, 7% NaCl. It belongs to phylum Firmicutes, it can ferment a variety of 5- and 6-carbon sugars derived from hemicelluloses and cellulose including cellobiose, and forms the end products hydrogen, acetate, and formate.[4]
Genome structure
The H. hydrogeniformans genome sequence was determined through a combination of Illumina and 454 technologies. The total genome size is 2,613,116 bp. The genome is 33.1% G+C and contains 2,295 candidate protein-encoding gene models. The genome contains four separate ribosomal RNA (rRNA) operons, each containing a 5S, a 16S, and a 23S rRNA gene, with 99.9 to 100% identity between 16S rRNA genes.[2]
Applications
As the price of fossil fuels increases and reserves diminish, biofuel production is seen as a viable contribution to current, as well as future energy demands, Halanaerobium hydrogeninformans can use several pure sugars for hydrogen production. Hence, this bacterium can potentially increase the efficiency and efficacy of biohydrogen production from renewable biomass resources.
See also
- Alkaliphiles
References
- ↑ (in en) Halanaerobium hydrogeniformans (Halanaerobium sp. (strain sapolanicus)). https://www.uniprot.org/taxonomy/656519.
- ↑ 2.0 2.1 2.2 Brown, SD; Begemann, MB; Mormile, MR; Wall, JD; Han, CS; Goodwin, LA; Pitluck, S; Land, ML et al. (July 2011). "Complete genome sequence of the haloalkaliphilic, hydrogen-producing bacterium Halanaerobium hydrogeniformans". Journal of Bacteriology 193 (14): 3682–3. doi:10.1128/JB.05209-11. PMID 21602336.
- ↑ McCune, Joe (30 January 2015). "S&T researcher finds hydrogen production in extreme bacterium". Missouri University of Science and Technology. http://news.mst.edu/2015/01/st-researcher-finds-hydrogen-production-in-extreme-bacterium/.
- ↑ Begemann, MB; Mormile, MR; Sitton, OC; Wall, JD; Elias, DA (2012). "A Streamlined Strategy for Biohydrogen Production with Halanaerobium hydrogeniformans, an Alkaliphilic Bacterium.". Frontiers in Microbiology 3: 93. doi:10.3389/fmicb.2012.00093. PMID 22509174.
Wikidata ☰ Q20687153 entry
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