Azotobacter

Azotobacter

Taxobox
color = lightgrey
name = "Azotobacter"
regnum = Bacteria
phylum = Proteobacteria
classis = Gammaproteobacteria
ordo = Pseudomonadales
familia = Pseudomonadaceae/Azotobacteraceae
genus = "Azotobacter"
subdivision_ranks = Species
subdivision ="Azotobacter vinelandii"
"Azotobacter chroococcum"

"Azotobacter" is a genus of usually motile, oval or spherical bacteria that form thick-walled cysts, and may produce large quantities of capsular slime. Azotobacter is an aerobic, free-living soil microbe which fixes nitrogen from the atmosphere. Beyond Azotobacter’s use as a model organism it has biotechnological applications. Examples are its use for alginate production and for nitrogen production in batch fermentations ref|1,ref|2. Polyhydroxybutyrate is produced under certain conditions. Azotobacter are Gram-negative bacteria.

References

*Clementi F. 1997. Alginate production by Azotobacter vinelandii.
* [http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=9397533&dopt=Abstract Crit Rev Biotechnol. 17(4):327-61]
*Dixon R and Kahn D. 2004. Genetic regulation of biological nitrogen fixation. Nat Rev Microbiol. 2(8):621-31. [http://www.google.de/url?sa=t&ct=res&cd=2&url=http%3A//www.jic.bbsrc.ac.uk/staff/ray-dixon/nrmicrofinal.pdf&ei=ElH-QpvhJZ2aiAKGmrU3] (pdf, 463kb)

ee also

* Acetobacter

External links

* [http://www.azotobacter.org Homepage of the "Azotobacter vinelandii" genome project]


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  • azotobacter — AZOTOBACTÉR subst. Bacterie aerobă care fixează în sol azotul atmosferic, transformându l în azot organic. – Din fr. azotobacter. Trimis de ana zecheru, 13.09.2007. Sursa: DEX 98  azotobactér s. n. Trimis de siveco, 10.08.2004. Sursa: Dicţionar… …   Dicționar Român

  • azotobacter — ● azotobacter nom masculin Bactérie aérobie du sol capable de fixer l azote atmosphérique sous nos climats. azotobacter [azɔtobaktɛʀ] n. m. ÉTYM. 1961; de azote, et bactér(ie). ❖ ♦ Biol. Bactérie capable d assimiler l azote atmosphérique, qui vit …   Encyclopédie Universelle

  • azotobacter — [ə zōt′ō bak΄tər] n. [ModL: see AZOTE & BACTERIA] any of a genus (Azotobacter) of large, rod shaped, nitrogen fixing bacteria found in certain soils …   English World dictionary

  • Azotobacter — Azotobacter …   Wikipédia en Français

  • Azotobacter — azotobakterijos statusas T sritis ekologija ir aplinkotyra apibrėžtis Bakterijos (Azotobacter), gyvenančios aplink augalų šaknis (rizosferoje), pasižyminčios gebėjimu kaupti (fiksuoti) atmosferos molekulinį azotą ir sintetinti organinius azoto… …   Ekologijos terminų aiškinamasis žodynas

  • azotobacter — aˈzōd.əˌbaktə(r), əˈz noun Etymology: New Latin, from International Scientific Vocabulary azote + New Latin o + bacter 1. capitalized : a genus of large flagellated gram negative rod shaped or spherical nonsymbiotic bacteria ( …   Useful english dictionary

  • azotobacter — noun Etymology: New Latin, genus name, from International Scientific Vocabulary azote + New Latin bacterium Date: 1910 any of a genus (Azotobacter) of large rod shaped or spherical bacteria occurring in soil and sewage and fixing atmospheric… …   New Collegiate Dictionary

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