%0 Journal Article %A Nikitin, Denis I. %A Strömpl, Carsten %A Oranskaya, M. S. %A Abraham, Wolf-Rainer %T Phylogeny of the ring-forming bacterium Arcicella aquatica gen. nov., sp. nov. (ex Nikitin et al. 1994), from a freshwater neuston biofilm %D 2004 %J International Journal of Systematic and Evolutionary Microbiology, %V 54 %N 3 %P 681-684 %@ 1466-5034 %R https://doi.org/10.1099/ijs.0.02896-0 %K ESI, electrospray ionization %K MS, mass spectrometry %I Microbiology Society, %X Arcicella aquatica NO-502T, obtained from a neuston film on a freshwater lake and belonging to the phylum Bacteroidetes, is characterized by ring-forming cells. The bacterium is a strict aerobe, with optimal growth between 28 and 30 °C. Carbohydrates, but no organic acids or amino acids, are used as substrates. The G+C content of strain NO-502T is 34·5 mol%; its genome size is 2·9×109 Da. The genus Arcicella and its type species Arcicella aquatica (type strain NO-502T=LMG 21963T=CIP 107990T) are proposed, and descriptions of this genus and species are given. %U https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijs.0.02896-0