caa a22 4500 44588973X CHVBK 20180317145612.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s11120-011-9629-1 doi (NATIONALLICENCE)springer-10.1007/s11120-011-9629-1 An alphaproteobacterium capable of both aerobic and anaerobic anoxygenic photosynthesis but incapable of photoautotrophy: Charonomicrobium ambiphototrophicum , gen. nov., sp. nov [Elektronische Daten] [J. Csotonyi, E. Stackebrandt, J. Swiderski, P. Schumann, V. Yurkov] A facultatively aerobic deep brown coccoid to ovoid bacterium, strain EG17T, was isolated from a saline effluent stream in the NaCl-dominated brine spring system known as East German Creek in the province of Manitoba, Canada. The strain produced BChl a incorporated into a functional reaction center and two light-harvesting complexes with absorption peaks at 802, 850, and 879nm. EG17T is the first reported anoxygenic phototroph capable of photoheterotrophic growth under both oxic and anoxic conditions. It yielded proportionally the greatest aerobic photosynthetic biomass under oligotrophic conditions. The results of 16S rRNA gene sequence comparisons revealed that EG17T was related most closely to the aerobic anoxygenic phototrophs Roseibacterium elongatum (98.3%) and quite distantly to both Dinoroseobacter shibae (95.2%) and Roseicyclus mahoneyensis (94.7%). The DNA G+C content was 65.6mol%. On the basis of the unique dual aerobic/anaerobic photosynthetic capability, the distinctive spectrophotometric absorption of the photosynthetic apparatus, diagnostic physiological and biochemical traits, and the moderate phylogenetic separation between EG17T and its nearest relatives, it is concluded that this microorganism should be classified as a novel genus and species, Charonomicrobium ambiphototrophicum gen. nov., sp. nov., with EG17T as the type strain. Springer Science+Business Media B.V., 2011 Charonomicrobium ambiphototrophicum nationallicence AAP nationallicence Aerobic anoxygenic phototorphs nationallicence Anoxygenic photosynthesis nationallicence Purple nonsulfur bacteria nationallicence Photoautotrophy nationallicence Bacteriochlorophyll a nationallicence Csotonyi J. Department of Microbiology, University of Manitoba, 418 Buller Building, R3T 2N2, Winnipeg, MB, Canada aut Stackebrandt E. DSMZ-Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstrasse 7B, 38124, Braunschweig, Germany aut Swiderski J. DSMZ-Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstrasse 7B, 38124, Braunschweig, Germany aut Schumann P. DSMZ-Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstrasse 7B, 38124, Braunschweig, Germany aut Yurkov V. Department of Microbiology, University of Manitoba, 418 Buller Building, R3T 2N2, Winnipeg, MB, Canada aut Photosynthesis Research Springer Netherlands 107/3(2011-03-01), 257-268 0166-8595 107:3<257 2011 107 11120 https://doi.org/10.1007/s11120-011-9629-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11120-011-9629-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Csotonyi J. Department of Microbiology, University of Manitoba, 418 Buller Building, R3T 2N2, Winnipeg, MB, Canada aut NATIONALLICENCE 700 1- Stackebrandt E. DSMZ-Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstrasse 7B, 38124, Braunschweig, Germany aut NATIONALLICENCE 700 1- Swiderski J. DSMZ-Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstrasse 7B, 38124, Braunschweig, Germany aut NATIONALLICENCE 700 1- Schumann P. DSMZ-Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstrasse 7B, 38124, Braunschweig, Germany aut NATIONALLICENCE 700 1- Yurkov V. Department of Microbiology, University of Manitoba, 418 Buller Building, R3T 2N2, Winnipeg, MB, Canada aut NATIONALLICENCE 773 0- Photosynthesis Research Springer Netherlands 107/3(2011-03-01), 257-268 0166-8595 107:3<257 2011 107 11120 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer