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Enterobacter cowanii : ウィキペディア英語版 | Enterobacter cowanii
''Enterobacter cowanii'' is a Gram-negative, motile, facultatively-anaerobic, rod-shaped bacterium of the genus ''Enterobacter''. The species is typically associated with natural environments and is found in soil, water, and sewage.〔Brady, C.L., Venter, S.N., Cleenwerck, I., Engelbeen, K., de Vos, P., Wingfield, M.J., Telechea, N. and Coutinho, T.A. "Isolation of Enterobacter cowanii from Eucalyptus showing symptoms of bacterial blight and dieback in Uruguay". 2009. Letters in Applied Microbiology 49 (2009): 461-465. doi:10.1111/j.1472-765X.2009.02692.x〕 ''E. cowanii'' is associated with plant pathogens that exhibit symptoms of severe defoliation and plant death.〔Furtado, G.Q., Guimarães, L.M.S., Lisboa, D.O., Cavalcante, G.P., Arriel, D.A.A., Alfenas, A.C. and Oliveira, J.R. "First Report of Enterobacter cowanii Causing Bacterial Spot on Mabea fistulifera, a Native Forest Species in Brazil". 2012. The American Phytopathological Society. V 96.http://dx.doi.org/10.1094/PDIS-02-12-0160-PDN〕 This species, originally referred to as NIH Group 42, was first proposed in 2000 as a potential member of the ''Enterobacteriaceae'' family.〔Kohaku Inoue, K. Sugiyama, Y. Kosako, R. Sakazaki, and S. Yamai. "Enterobacter cowaniisp. nov., a New Species of the Family Enterobacteriaceae". 2000. Current Microbiology. Volume 41, Issue 6, pp 417-420. http://link.springer.com/article/10.1007/s002840010160〕 The name of this species honors S. T. Cowan, an English bacteriologist, for his significant contributions to the field of bacterial taxonomy.〔 ==Phenotypic characterization== ''Enterobacter cowanii'' is phenotypically defined as being a Gram-negative, motile, and facultative anaerobic bacteria. The morphology of this bacterium is described as being cream colored when cultured on non-selective, YDC (Yeast extract-dextrose-CaCO3) medium.〔 When tested for enzyme production, ''E. cowanii'' is asparagine and catalase positive, while also being urease and oxidase negative.〔 When originally introduced as NIH Group 42, seventy traditional phenotypic characteristics were determined and listed by Kohaku et al.〔
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