Arsenic biotransformation potential of six marine diatom species: effect of temperature and salinity
Papry, R.I.; Ishii, K.; Al Mamum, M.A.; Miah, S.; Maki, T.; Hasegawa, H. (2019). Arsenic biotransformation potential of six marine diatom species: effect of temperature and salinity. NPG Scientific Reports 9(1): 16 pp. https://dx.doi.org/10.1038/s41598-019-46551-8
In: Scientific Reports (Nature Publishing Group). Nature Publishing Group: London. ISSN 2045-2322; e-ISSN 2045-2322, more
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| Authors | | Top |
- Papry, R.I.
- Ishii, K.
- Al Mamum, M.A.
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- Miah, S.
- Maki, T.
- Hasegawa, H.
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| Abstract |
Temperature and salinity effects on marine diatom species growth has been studied extensively; however, their effect on arsenic (As) biotransformation has been imprecise. This study reports the growth, and As biotransformation and speciation patterns at various temperatures and salinities of six marine diatom species: Asteroplanus karianus, Thalassionema nitzschioides, Nitzschia longissima, Skeletonema sp., Ditylum brightwellii, and Chaetoceros didymus. The growth rate and As biotransformation potentials of these species during three weeks of culture in f/2 based medium were significantly affected by wide temperature (0–35 °C) and salinity (0.3–50‰) ranges. Growth and As biotransformation were higher at optimum temperatures of 10–25 °C, and salinity of 10–35‰, whereas growth and arsenic biotransformation were lower at <5 °C and 5‰ and >25 °C and 35‰, respectively. The results showed that As(V) to As(III) biotransformation differed significantly (p < 0.05) between day 10 and 17. At optimum temperature and salinity levels, the cell size and As biotransformation were higher for all the species. A conceptual model on temperature and salinity effects on growth and As uptake and biotransformation mechanisms by these species has been proposed based on the findings of this study. |
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