{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1363670319024007296.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1128/jb.175.10.3096-3104.1993"}},{"identifier":{"@type":"URI","@value":"https://journals.asm.org/doi/pdf/10.1128/jb.175.10.3096-3104.1993"}}],"dc:title":[{"@value":"The eubacterium Ectothiorhodospira halophila is negatively phototactic, with a wavelength dependence that fits the absorption spectrum of the photoactive yellow protein"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>The motile, alkalophilic, and extremely halophilic purple sulfur bacterium Ectothiorhodospira halophila is positively photophobotactic. This response results in the accumulation of bacteria in light spots (E. Hustede, M. Liebergesell, and H. G. Schlegel, Photochem. Photobiol. 50:809-815, 1989; D. E. McRee, J. A. Tainer, T. E. Meyer, J. Van Beeumen, M. A. Cusanovich, and E. D. Getzoff, Proc. Natl. Acad. Sci. USA 86:6533-6537, 1989; also, this work). In this study, we demonstrated that E. halophila is also negatively phototactic. Video analysis of free-swimming bacteria and the formation of cell distribution patterns as a result of light-color boundaries in an anaerobic suspension of cells revealed the existence of a repellent response toward intense (but nondamaging) blue light. In the presence of saturating background photosynthetic light, an increase in the intensity of blue light induced directional switches, whereas a decrease in intense blue light gave rise to suppression of these reversals. To our knowledge, this is the first report of a true repellent response to light in a free-swimming eubacterium, since the blue light response in Escherichia coli and Salmonella typhimurium (B. L. Taylor and D. E. Koshland, Jr., J. Bacteriol. 123:557-569, 1975), which requires an extremely high light intensity, is unlikely to be a sensory process. The wavelength dependence of this negative photoresponse was determined with narrow band pass interference filters. It showed similarity to the absorption spectrum of the photoactive yellow protein from E. halophila.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380016861876947730","@type":"Researcher","foaf:name":[{"@value":"W W Sprenger"}],"jpcoar:affiliationName":[{"@value":"Department of Microbiology, University of Amsterdam, The Netherlands."}]},{"@id":"https://cir.nii.ac.jp/crid/1383670319024007299","@type":"Researcher","foaf:name":[{"@value":"W D Hoff"}],"jpcoar:affiliationName":[{"@value":"Department of Microbiology, University of Amsterdam, The Netherlands."}]},{"@id":"https://cir.nii.ac.jp/crid/1383670319024007298","@type":"Researcher","foaf:name":[{"@value":"J P Armitage"}],"jpcoar:affiliationName":[{"@value":"Department of Microbiology, University of Amsterdam, The Netherlands."}]},{"@id":"https://cir.nii.ac.jp/crid/1383670319024007297","@type":"Researcher","foaf:name":[{"@value":"K J Hellingwerf"}],"jpcoar:affiliationName":[{"@value":"Department of Microbiology, University of Amsterdam, The Netherlands."}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00219193"},{"@type":"EISSN","@value":"10985530"}],"prism:publicationName":[{"@value":"Journal of Bacteriology"}],"dc:publisher":[{"@value":"American Society for Microbiology"}],"prism:publicationDate":"1993-05","prism:volume":"175","prism:number":"10","prism:startingPage":"3096","prism:endingPage":"3104"},"reviewed":"false","dc:rights":["https://journals.asm.org/non-commercial-tdm-license"],"url":[{"@id":"https://journals.asm.org/doi/pdf/10.1128/jb.175.10.3096-3104.1993"}],"createdAt":"2016-11-07","modifiedAt":"2021-07-29","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050022089736057728","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Nonradiative decay dynamics of methyl-4-hydroxycinnamate and its hydrated complex revealed by picosecond pump-probe 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