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Pseudomonadaceae is a family of bacteria that includes the genera ''Azomonas'', ''Azomonotrichon'', ''Azorhizophilus'', ''Azotobacter'', ''Cellvibrio'', ''Mesophilobacter'', ''Pseudomonas'' (the type genus), ''Rhizobacter'', ''Rugamonas'', and ''Serpens''.〔Skerman, McGowan and Sneath (editors): Approved Lists of Bacterial Names. Int. J. Syst. Bacteriol., 1980, 30, 225-420.〕 The Azotobacteriaceae were recently published as belonging in this family, as well. ==History== Pseudomonad literally means 'false unit', being derived from the Greek ''pseudo'' (ψευδο - 'false') and ''monas'' (μονος - 'a single unit'). The term "monad" was used in the early history of microbiology to denote single-celled organisms. Because of their widespread occurrence in nature, the pseudomonads were observed early in the history of microbiology. The generic name ''Pseudomonas'' created for these organisms was defined in rather vague terms in 1894 as a genus of Gram-negative, rod-shaped and polar-flagella bacteria. Soon afterwards, a very large number of species was assigned to the genus. Pseudomonads were isolated from many natural niches, and a large number of species names was originally assigned to the genus. New methodology and the inclusion of approaches based on the studies of conservative macromolecules have reclassified many strains. ''Pseudomonas aeruginosa'' is increasingly recognized as an emerging opportunistic pathogen of clinical relevance. Studies also suggest the emergence of antibiotic resistance in ''P. aeruginosa''. In 2000, the complete genome sequence of a ''Pseudomonas'' species was determined; more recently, the sequences of other strains have been determined. The strains which have been sequenced include ''P. aeruginosa'' PAO1 (2000), ''P. putida'' KT2440 (2002), ''P. fluorescens'' Pf-5 (2005), ''P. fluorescens'' PfO-1 and ''P. entomophila'' L48. Several pathovars of ''Pseudomonas syringae'' have been sequenced, including pathovar tomato DC3000 (2003), pathovar ''syringae'' B728a (2005), and pathovar ''phaseolica'' 1448A (2005).〔 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「pseudomonadaceae」の詳細全文を読む スポンサード リンク
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