Nitrogen metabolism in haloarchaea

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Title: Nitrogen metabolism in haloarchaea
Authors: Bonete, María-José | Martínez-Espinosa, Rosa María | Pire, Carmen | Zafrilla Requena, Basilio | Richardson, David J.
Research Group/s: Biotecnología de Extremófilos (BIOTECEXTREM)
Center, Department or Service: Universidad de Alicante. Departamento de Agroquímica y Bioquímica
Keywords: Haloarchaea | Nitrogen | Metabolism
Knowledge Area: Bioquímica y Biología Molecular
Issue Date: 1-Jul-2008
Publisher: BioMed Central
Citation: BONETE, María José, et al. “Nitrogen metabolism in haloarchaea”. Saline Systems 2008, 4:9. doi:10.1186/1746-1448-4-9
Abstract: The nitrogen cycle (N-cycle), principally supported by prokaryotes, involves different redox reactions mainly focused on assimilatory purposes or respiratory processes for energy conservation. As the N-cycle has important environmental implications, this biogeochemical cycle has become a major research topic during the last few years. However, although N-cycle metabolic pathways have been studied extensively in Bacteria or Eukarya, relatively little is known in the Archaea. Halophilic Archaea are the predominant microorganisms in hot and hypersaline environments such as salted lakes, hot springs or salted ponds. Consequently, the denitrifying haloarchaea that sustain the nitrogen cycle under these conditions have emerged as an important target for research aimed at understanding microbial life in these extreme environments. The haloarchaeon Haloferax mediterranei was isolated 20 years ago from Santa Pola salted ponds (Alicante, Spain). It was described as a denitrifier and it is also able to grow using NO3-, NO2- or NH4+ as inorganic nitrogen sources. This review summarizes the advances that have been made in understanding the N-cycle in halophilic archaea using Hfx mediterranei as a haloarchaeal model. The results obtained show that this microorganism could be very attractive for bioremediation applications in those areas where high salt, nitrate and nitrite concentrations are found in ground waters and soils.
Sponsor: This work was funded in part by research grants from the MEC Spain (BIO2005-08991-C02-01), Generalitat Valenciana (GRUPOS04/72 and GV04B/551). R.M.M.E. was supported by short-term fellowships (post-doc stay in DJR's Laboratory, Norwich) from FEBS, COST Action 856 and Generalitat Valenciana.
URI: http://hdl.handle.net/10045/33156
ISSN: 1746-1448
DOI: 10.1186/1746-1448-4-9
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2008 Bonete et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Peer Review: si
Publisher version: http://dx.doi.org/10.1186/1746-1448-4-9
Appears in Collections:INV - BIOTECEXTREM - Artículos de Revistas
INV - AppBiochem - Artículos de Revistas

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