PMID: 9446684Mar 27, 1998Paper

Physiology and tactic response of the phototrophic consortium "Chlorochromatium aggregatum"

Archives of Microbiology
J M Fröstl, J Overmann

Abstract

The phototrophic consortium "Chlorochromatium aggregatum" was enriched from sediment samples of a eutrophic freshwater lake and was maintained at high numbers in anoxic sulfide-reduced medium. Growth of intact consortia was observed only in the light and in the presence of 2-oxoglutarate as an organic carbon source. Consortia of "C. aggregatum" reached maximum growth rates at light intensities >/= 5 &mgr;mol quanta m-2 s-1. Of ten compounds tested, sulfide, thiosulfate, 2-oxoglutarate, and citrate served as a chemoattractant for "C. aggregatum". When incubated in the presence of sulfide and in the light, epibionts reduced the fluorochrome 5-cyano-2, 3-di-4-tolyl-tetrazolium chloride (CTC). Reduction of CTC was not observed in the presence of the uncoupler carbonyl cyanide m-chlorophenylhydrazone (CCCP) or in the dark, indicating that sulfide serves as an electron donor for the phototrophic epibiont. Motile consortia accumulated scotophobically in microcuvettes at a wavelength of 740 nm. Since this wavelength corresponds to the position of the absorption maximum of bacteriochlorophylls c or d, the photosynthetic pigments are most likely the photoreceptors of the scotophobic response. It is concluded that, within the consortia, a...Continue Reading

Citations

Jun 12, 2008·Annual Review of Microbiology·Ainslie E F LittleJo Handelsman
Sep 1, 2015·Current Opinion in Biotechnology·Stephanie G HaysPamela A Silver
Mar 14, 2013·FEMS Microbiology Reviews·Brandon E L MorrisChristine Moissl-Eichinger
Sep 7, 2001·Annual Review of Microbiology·H N Schulz, B B Jorgensen
Jul 12, 2017·Microbial Biotechnology·Alex J LewisAbhijeet P Borole
Apr 1, 2002·FEMS Microbiology Ecology·Andrea M SassHeribert Cypionka
Jul 27, 2006·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·J M Foster, M E Forster
Dec 7, 2006·Biology Letters·Helder Queiroz, Anne E Magurran
Jul 22, 2017·Annual Review of Microbiology·Jörg OvermannJohannes Sikorski
Mar 18, 2008·Journal of Bacteriology·Gerhard WannerJörg Overmann
Aug 6, 2004·Applied and Environmental Microbiology·Jens Glaeser, Jörg Overmann
Jul 4, 2003·Applied and Environmental Microbiology·Jens Glaeser, Jörg Overmann
Nov 5, 2005·Applied and Environmental Microbiology·Birgit E M KanzlerJörg Overmann
Jun 9, 2016·Cold Spring Harbor Perspectives in Biology·Jessica K PolkaPamela A Silver
May 16, 2000·Journal of Bacteriology·R KortK J Hellingwerf
Feb 3, 2020·Cellular and Molecular Life Sciences : CMLS·István Zachar, Gergely Boza
Dec 21, 2016·Theory in Biosciences = Theorie in Den Biowissenschaften·Francesco CataniaJürgen Gadau

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