Klebsiella oxytoca is a Gram-negative, rod-shaped bacterium that is closely related to K. pneumoniae, from which it is distinguished by being indole-positive; it also has slightly different growth characteristics in that it is able to grow on melezitose, but not 3-hydroxybutyrate.
It is a diazotroph, able to colonise plant hosts and fix atmospheric nitrogen into a form which the plant can use. Association of K. oxytoca with the barley rhizosphere during an entire vegetative period has been demonstrated. The bacteria adhere strongly to root hairs, and less strongly to the surface of the zone of elongation and root cap mucilage.1
K. oxytoca is referenced as being used to produce hydrogen in patents filed by Nanologix, Inc.
- Brisse S, Grimont F & Grimont P AD (2006). Prokaryotes. New York, NY: Springer New York. p. 159-196.
- Dien B, Cotta M, Jeffries T (2003). "Bacteria engineered for fuel ethanol production: current status". Appl Microbiol Biotechnol 63 (3): 258–66. doi:10.1007/s00253-003-1444-y. PMID 13680206.
- Högenauer C, Langner C, Beubler E, et al (December 2006). "Klebsiella oxytoca as a causative organism of antibiotic-associated hemorrhagic colitis". N. Engl. J. Med. 355 (23): 2418–26. doi:10.1056/NEJMoa054765. PMID 17151365.
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