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Photomovement in Euglena.
Adv Exp Med Biol
October 2017
Faculty of Pharmaceutical Sciences, Toho University, Miyama 2-2-1, Funabashi, Chiba, 274-8510, Japan.
Motile microorganisms such as the green Euglena gracilis use a number of external stimuli to orient in their environment. They respond to light with photophobic responses, photokinesis and phototaxis, all of which can result in accumulations of the organisms in suitable habitats. The light responses operate synergistically with gravitaxis, aerotaxis and other responses.
View Article and Find Full Text PDFPhototaxis in the magnetotactic bacterium Magnetospirillum magneticum strain AMB-1 is independent of magnetic fields.
Appl Microbiol Biotechnol
April 2011
Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, 100190, China.
Magnetotactic bacteria (MTB) can rapidly relocate to optimal habitats by magneto-aerotaxis. Little is known about MTB phototaxis, a response that might also aid navigation. In this study, we analyzed the relationship between phototaxis and magnetotaxis in Magnetospirillum magneticum strain AMB-1.
View Article and Find Full Text PDFContributions of Theodor Wilhelm Engelmann on phototaxis, chemotaxis, and photosynthesis.
Photosynth Res
September 2005
Institut für Biologie 2, Mikrobiologie, Albert-Ludwigs-Universität, Schänzlestr. 1, 79104, Freiburg, Germany.
Theodor Wilhelm Engelmann (1843-1909), who had a creative life in music, muscle physiology, and microbiology, developed a sensitive method for tracing the photosynthetic oxygen production of unicellular plants by means of bacterial aerotaxis (chemotaxis). He discovered the absorption spectrum of bacteriopurpurin (bacteriochlorophyll a) and the scotophobic response, photokinesis, and photosynthesis of purple bacteria.
View Article and Find Full Text PDFPhototaxis and aerotaxis in a calcifying alga.
Gravit Space Biol Bull
June 2005
Dept. of Orthodontics, Dental Branch, University of Texas Health Science Center at Houston, USA.
Energy taxis is the dominant behavior in Azospirillum brasilense.
J Bacteriol
November 2000
Department of Microbiology and Molecular Genetics, School of Medicine, Loma Linda University, Loma Linda, California 92350, USA.
Energy taxis encompasses aerotaxis, phototaxis, redox taxis, taxis to alternative electron acceptors, and chemotaxis to oxidizable substrates. The signal for this type of behavior is originated within the electron transport system. Energy taxis was demonstrated, as a part of an overall behavior, in several microbial species, but it did not appear as the dominant determinant in any of them.
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