Abstract
The specific growth rate, cell final yields and extracellar carbonic anhydrase activity of the red tide alga Skeletonema costatum increased with increasing concentrations of Zn2+ from 0 to 12 pM, but decreased when Zn2+ was over 24 pM. However, cells grown under high concentrations of Zn2+ had higher activities of intracellular carbonic anhydrase than those grown under low concentrations of Zn2+. Chlorophyll a-specific light-saturated photosynthetic rate (Pm chl a), dark respiration rate (Rd chl a) and apparent photosynthetic efficiency (αchl a) significantly increased with increasing concentrations of Zn2+ from 0 to 3 pM, but decreased when increasing concentrations of Zn2+ from 3 to 66 pM. Photorespiration is the lowest when cells cultured in 3 pM Zn2+. The results suggest physiological activity of Skeletonema costatum is very sensitive to the prevailing concentration of Zn2+.
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Hu, H., Shi, Y., Cong, W. et al. Growth and photosynthesis limitation of marine red tide alga Skeletonema costatum by low concentrations of Zn2+ . Biotechnology Letters 25, 1881–1885 (2003). https://doi.org/10.1023/B:BILE.0000003976.18970.cd
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DOI: https://doi.org/10.1023/B:BILE.0000003976.18970.cd