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The genus ''Bacterium'' was a taxon described in 1828 by Christian Gottfried Ehrenberg.〔Ehrenberg C. G. (1828 (), 1831 ()). ''Symbolae physicae animalia evertebrata''. In: ''Symbolae physicae, seu Icones adhue ineditae corporum naturalium novorum aut minus cognitorum, quae ex itineribus per Libyam, Aegyptum, Nubiam, Dengalam, Syriam, Arabiam et Habessiniam. Pars Zoologica.'' Hemprich F. G. & Ehrenberg C. G. (eds.). Officina Academica: Berlin. pp. 2 and 8, plate 2, fig. 6, ().〕 The type species was later changed from ''Bacterium triloculare'' to ''Bacterium coli'' (now ''Escherichia coli'') as it was lost. In 1951 and then in 1954 it was recognised as a ''nomen generum rejiciendum'', which means a generic name to be rejected, this also applied to its family ''Bacteriaceae''.〔(Bacteriological code ) Appendix 5 J.O. 4.〕 This genus included non-spore forming rods whose relation to other species was obscure (a "taxonomy dumping group"). This is different from the genus Bacillus, whose members were spore forming rods (''sensu'' Cohn 1872〔COHN (F.): Untersuchungen über Bakterien. Beitrage zur Biologie der Pflanzen Heft 2, 1872, 1, 127-224.〕). ==Species== Many species were placed under the genus. Given that the genus was abolished in the process of forming the Bacteriological Code there is no such thing as an official list of species present. These are those accepted by Breed and Conn in 1935:〔 * ''Bacterium radiobacter'', then ''Agrobacterium tumefaciens'', now ''Rhizobium radiobacter'' * ''Bacterium aerogenes'', now ''Aerobacter aerogenes'' * ''Bacterium violaceum'', now ''Chromobacterium violaceum'' * ''Bacterium amylovorum'', now ''Erwinia amylovora'' * ''Bacterium zopfii'', now ''Kurthia zopfii'' * ''Bacterium monocytogenes'', now ''Listeria monocytogenes'' * ''Bacterium pneumoniae'', now ''Klebsiella pneumoniae'' 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Bacterium (genus)」の詳細全文を読む スポンサード リンク
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