title: Arsenoriboside degradation in marine systems: the use of bacteria culture incubation experiments as model systems.
abstract: Arsenoribosides (as glycerol; phosphate; sulfate and sulfonate) persisted in all bacteria-inoculated cultures irrespective of the source of bacteria (seawater, macro-algae surface) or the culture media used (DIFCO Marine Broth 2216 or novel blended Hormosira banksii tissue-based). This is unlike observations from traditional macro-algae tissue decomposition studies or in nature. In addition known arsenoriboside degradation products such as dimethylarsenoethanol (DMAE), dimethylarsenate (DMA), methylarsenate (MA) and arsenate - As(V) were not detected in any cultures. Consequently, the use of bacterial culture incubation experiments to explain the fate of arsenoribosides in marine systems appears limited as the processes governing arsenoriboside degradation in these experiments appear to be different to those in macro-algae tissue decomposition studies or in nature.
authors.affiliation: Ecochemistry Laboratory, Institute for Applied Ecology, University of Canberra, University Drive, Bruce, ACT 2601, Australia. Electronic address: Elliott.Duncan@csiro.au.
authors.forename: Elliott G
authors.initials: EG
authors.lastname: Duncan
authors.forename: William A
authors.initials: WA
authors.lastname: Maher
authors.forename: Simon D
authors.initials: SD
authors.lastname: Foster
authors.forename: Katarina M
authors.initials: KM
authors.lastname: Mikac
authors.forename: Frank
authors.initials: F
authors.lastname: Krikowa
authors.forename: Anthea
authors.initials: A
authors.lastname: Florance
mesh_terms: D001152:Arsenicals / Q000032:analysis / Q000737:chemistry* / Q000378:metabolism; D001419:Bacteria / Q000378:metabolism; D001673:Biodegradation, Environmental; D003470:Culture Media; D010944:Plants / Q000378:metabolism; D012623:Seawater / Q000737:chemistry* / Q000382:microbiology; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry* / Q000378:metabolism
chemical_list: D001152:Arsenicals; D003470:Culture Media; D014874:Water Pollutants, Chemical
keywords: Arsenic cycling; Arsenic degradation; Arsenoribosides; Culture media; Marine bacteria