Abstract
Synechocysis sp. PCC6803 is a unicellular blue alga which ubiquitously exists in aquatic system and is considered to play a role in arsenic cycling. Our results showed that Synechocysis can accumulate arsenic as much as 1.0 and 0.9 g kg−1 DW when exposed to 0.5 mM arsenate and arsenite for 14 days, respectively. In addition, arsenic species in cells were assayed under different exposure conditions and it was found that inorganic arsenic, including arsenate and arsenite, is the dominant species. Organic methylated arsenicals can only be detected exposed to higher arsenic concentration range (100–500 μM). Arsenate is the dominant arsenic species and presents more than 80% of the total arsenic in cells. Efflux of both arsenate and arsenite was observed. When treated with 2.67 μM arsenite, Synechocysis can rapidly oxidize arsenite to arsenate and accumulate As rapidly. The observed arsenic oxidation in solute is solely caused by cellular oxidation. Given the robust ability of As accumulation, it can serve as a phytoremediation organism to efficiently remove arsenic from aquatic environments.
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Berg, M., Tran, H. C., Nguyen, T. C., Pham, H. V., Schertenleib, R., & Giger, W. (2001). Arsenic contamination of groundwater and drinking water in Vietnam: a human health threat. Environmental Science and Technology, 35, 2621–2626. doi:10.1021/es010027y.
Bhattacharjee, H., & Rosen, B. P. (2007). Arsenic metabolism in prokaryotic and eukaryotic microbes. molecular microbiology of heavy metals. Microbiology Monographs, 6, 371–406.
Connon, S. A., Koski, A. K., Neal, A. L., Wood, S. A., & Magnuson, T. S. (2008). Ecophysiology and geochemistry of microbial arsenic oxidation within a high arsenic, circumneutral hotspring system of the Alvord Desert. FEMS Microbiology Ecology, 64, 117–128.
Duester, L., van der Geest, H. G., Moelleken, S., Hirner, A. V., & Kueppers, K. (2011). Comparative phytotoxicity of methylated and inorganic arsenic- and antimony species to Lemna minor, Wolffia arrhiza and Selenastrum capricornutum. Microchemical Journal, 97, 30–37.
Granchinho, C. R., Polishchuk, E., Cullen, W. R., & Reimer, K. J. (2001). Biomethylation and bioaccumulation of arsenic(V) by marine alga Fucus gardeneri. Applied Organometallic Chemistry, 15, 553–560. doi:10.1002/aoc.183.
Kaise, T., Fujiwara, S., Tsuzuki, M., Sakurai, T., Saitoh, T., & Mastubara, C. (1999). Accumulation of arsenic in a unicellular alga Chlamydomonas reinhardtii. Applied Organometallic Chemistry, 13, 107–111. doi:10.1002/(SICI)1099-0739(199902.
Langner, H. W., Jackson, C. R., McDermott, T. R., & Inskeep, W. P. (2001). Rapid oxidation of arsenite in a hot spring ecosystem, Yellowstone National Park. Environomental Science and Technology, 35, 3302–3309. doi:10.1021/es0105562.
Meharg, A. A. (2004). Arsenic in rice — understanding a new disaster for South-East Asia. Trend in Plant Science, 9, 415–417. doi:10.1016/j.tplants.2004.07.002.
Meliker, J. R., Wahl, R. L., Cameron, L. L., & Nriagu, J. O. (2007). Arsenic in drinking water and cerebrovascular disease, diabetes mellitus, and kidney disease in Michigan: a standardized mortality ratio analysis. Environmental Health, 6, 11. doi:10.1186/1476-069X-6-4.
Ning, Z. X., Lobdell, D. T., Kwok, R. K., Liu, Z. Y., Zhang, S. Y., Ma, C. L., et al. (2007). Residential exposure to drinking water arsenic in inner Mongolia, China. Toxicology Applied Pharmacology, 222, 351–356. doi:10.1016/j.taap.2007.02.012.
Qin, J., Lehr, C. R., Yuan, C. G., Le, C., McDermott, T. R., & Rosen, B. P. (2009). Biotransformation of arsenic by a Yellowstone thermoacidophilic eukaryotic alga. Proceedings of the National Academy of Sciences of the United States of America, 106, 5213–5217. doi:10.1073/pnas.0900238106.
Rippka, R., Deruelles, J., Waterbury, J. B., Herdman, M., & Stanier, R. Y. (1979). Generic assignments, strain histories and properties of pure cultures of cyanobacteria. Journal of General Microbiology, 111, 1–61.
Rosen, B. P. (2002). Transport and detoxification systems for transition metals, heavy metals and metalloids in eukaryotic and prokaryotic microbes. Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology, 133, 689–693.
Salmassi, T. M., Walker, J. J., Newman, D. K., Leadbetter, J. R., Pace, N. R., & Hering, J. G. (2006). Community and cultivation analysis of arsenite oxidizing biofilms at Hot Creek. Environmental Microbiology, 8, 50–59. doi:10.1111/j.1462-2920.2005.00862.x.
Smedley, P. L., & Kinniburgh, D. G. (2002). A review of the source, behaviour and distribution of arsenic in natural waters. Applied Geochemistry, 17, 517–568. doi:10.1016/S0883-2927(02)00018-5.
Smith, A. H., Lopipero, P. A., Bates, M. N., & Steinmaus, C. M. (2002). Public health — arsenic epidemiology and drinking water standards. Science, 296, 2145–2146. doi:10.1126/science.1072896.
Starý, J., Havlík, B., Kratzer, K., Prášilová, J., & Hanušová, J. (1983). Cumulation of zinc, cadmium and mercury on the alga Scenedesmus obliquus. Acta Hydrochimica Hydrobiologica, 11, 401–409.
Suhendrayatna, A., Kuroiwa, O. T., & Maeda, S. (1999). Arsenic compounds in the freshwater green microalgae Chlorella vulgaris after exposure to arsenite. Applied Organometallic Chemistry, 13, 128–129. doi:10.1002/(SICI)1099-0739(199902.
Vijayaraghavan, K., Jegan, R. J., Palanivelu, K., & Velan, M. (2004). Copper removal from aqueous solution by marine green alga UIva reticulate. Electronic Journal Biotechnology, 7, 61–71.
Xu, X. Y., McGrath, S. P., & Zhao, F. J. (2007). Rapid reduction of arsenate in the medium mediated by plant roots. New Phytologist, 176, 590–599. doi:10.1111/j.1469-8137.2007.02195.x.
Yin, X. X., Chen, J., Qin, J., Sun, G. X., Rosen, B. P., & Zhu, Y. G. (2011a). Biotransformation and volatilization of arsenic by three photosynthetic cyanobacteria. Plant Physiology, 156, 1631–1638. doi:10.1104/pp.111.178947.
Yin, X. X., Wang, L. H., Duan, G. L., & Sun, G. X. (2011b). Characterization of arsenate transformation and identification of arsenate reductase in a green alga Chlamydomonas reinhardtii. Journal of Environmental Sciences, 23, 1186–1193. doi:10.1016/S1001-0742(10)60492-5.
Zhang, X., Lin, A. J., Zhao, F. J., Xu, G. Z., Duan, G. L., & Zhu, Y. G. (2008). Arsenic accumulation by the aquatic fern Azolla: comparison of arsenate uptake, speciation and efflux by A. caroliniana and A. filiculoides. Environmental Pollution, 156, 1149–1155. doi:10.1016/j.envpol.2008.04.002.
Zhang, X., Zhao, F. J., Huang, Q., Williams, P. N., Sun, G. X., & Zhu, Y. G. (2009). Arsenic uptake and speciation in the rootless duckweed Wolffia globosa. New Phytologist, 182, 421–428. doi:10.1111/j.1469-8137.2008.02758.x.
Zhu, Y. G., Sun, G. X., Lei, M., Teng, M., Liu, Y. X., Chen, N. C., et al. (2008). High percentage inorganic arsenic content of mining impacted and nonimpacted Chinese rice. Environmental Science and Technology, 42, 5008–8013. doi:10.1021/es8001103.
Acknowledgements
We thank Jian Chen (CAS RCEES, China) for samples analysis. This study was financially supported in part by the National Natural Science Foundation of China (No. 21077100) and Doctor Foundation of Shandong province (No. BS2009HZ024).
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Yin, XX., Wang, L.H., Bai, R. et al. Accumulation and Transformation of Arsenic in the Blue-Green Alga Synechocysis sp. PCC6803. Water Air Soil Pollut 223, 1183–1190 (2012). https://doi.org/10.1007/s11270-011-0936-0
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DOI: https://doi.org/10.1007/s11270-011-0936-0