Biomethylation and volatilization of arsenic by the marine microalgae Ostreococcus tauri

•O. tauri could tolerate 100μM As(III) or As(V).•O. tauri is able to biomethylate and biovolatilize As.•As(V) reduction was speculated to be the rate-limiting factor for As methylation and volatilization. Ostreococcus tauri is a marine green microalga, recognized as a model organism of the marine ph...

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Veröffentlicht in:	Chemosphere (Oxford) 2013-09, Vol.93 (1), p.47-53
Hauptverfasser:	Zhang, Si-Yu, Sun, Guo-Xin, Yin, Xi-Xiang, Rensing, Christopher, Zhu, Yong-Guan
Format:	Artikel
Sprache:	eng
Schlagworte:	Arsenic Arsenic - chemistry Arsenic - metabolism Arsenic - toxicity arsenites Biodegradation, Environmental Biomethylation Biotransformation Chlorophyta - cytology Chlorophyta - drug effects Chlorophyta - metabolism Earth sciences Earth, ocean, space Environmental Pollutants - chemistry Environmental Pollutants - metabolism Environmental Pollutants - toxicity Exact sciences and technology Geochemistry marine environment Marine microalgae Methylation microalgae Microalgae - cytology Microalgae - drug effects Microalgae - metabolism Mineralogy phytoplankton seawater Silicates surface area Volatilization Water geochemistry
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Zusammenfassung:	•O. tauri could tolerate 100μM As(III) or As(V).•O. tauri is able to biomethylate and biovolatilize As.•As(V) reduction was speculated to be the rate-limiting factor for As methylation and volatilization. Ostreococcus tauri is a marine green microalga, recognized as a model organism of the marine phytoplankton assemblage and widely distributed from coastal to oligotrophic waters. This study showed it could tolerate both arsenite and arsenate concentrations of up to 100μM, and cellular As concentration increased significantly (P
ISSN:	0045-6535 1879-1298
DOI:	10.1016/j.chemosphere.2013.04.063