Pseudomonas and Related Genera

摘要: The name Pseudomonas was proposed initially by Professor W.E.F.A. Migula of the Karlsruhe Institute Germany at end 19th century (Migula, 1894, 1900; Palleroni, 2010) and it reported for first time in Bergey’s Manual Determinative Bacteriology 1923. choice seems to be due its similarity size motility nanoflagellate Monas (from Greek: “pseude”5false). description inaccurate: described as “. . cells with polar organs motility. Formation spores occurs some species, but is rare. .”. pyocyanea (now P. aeruginosa) type species. In 1926, extreme versatility highlighted L.E. den Dooren de Jong his thesis (den Jong, 1926; which focused on soil bacteria. By middle 1900, more than 800 species had been ascribed Pseudomonas, creating a confusing background researchers interested genus. major cause this erroneous classification trend categorize any Gram-negative, strictly aerobic, nonsporulating, motile bacillus representative genus (Scales et al., 2014). turning point view development biomolecular approaches that, alongside classical microbiology, unraveled difficult strains. Around beginning third quarter 20th century, DNA/DNA hybridization revealed deep differences among phenotypically similar strains (Pecknold Grogan, 1973). Subsequently, RNA/DNA showed presence 5 different rRNA groups (rRNA group I, II, III, IV, V; Palleroni 1972). I (called sensu stricto) comprised aeruginosa, all fluorescent nonfluorescent (such stutzeri, alcaligenes, pseudoalcaligenes, mendocina). A in-depth analysis genetic conducted study 16S sequence homologies: despite low discriminatory power rRNA, study allowed identification distinct phylogenetic (Laguerre 1994; Anzai 2000). In 2000, great advance made siderophore Meyer colleagues that provided an excellent characterization several (Meyer, 2000; 2002). At present (December 2015) comprises 244 http://www.bacterio.net/, having characteristics. In chapter, importance related genera food spoilers described. Taxonomic organization, methods, spoilage mechanisms, control plans are reported, goal highlighting complexity potential Xanthomonas, Shewanella.