Decreased motility of flagellated microalgae long-term acclimated to CO2-induced acidified waters

Yitao Wang, Xiao Fan, Guang Gao, John Beardall, Kazuo Inaba, Jason M. Hall-Spencer, Dong Xu, Xiaowen Zhang, Wentao Han, Andrew McMinn and Naihao Ye ()
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Yitao Wang: Chinese Academy of Fishery Sciences
Xiao Fan: Chinese Academy of Fishery Sciences
Guang Gao: Xiamen University
John Beardall: Xiamen University
Kazuo Inaba: University of Tsukuba
Jason M. Hall-Spencer: University of Tsukuba
Dong Xu: Chinese Academy of Fishery Sciences
Xiaowen Zhang: Chinese Academy of Fishery Sciences
Wentao Han: Chinese Academy of Fishery Sciences
Andrew McMinn: University of Tasmania
Naihao Ye: Chinese Academy of Fishery Sciences

Nature Climate Change, 2020, vol. 10, issue 6, 561-567

Abstract: Abstract Motility plays a critical role in algal survival and reproduction, with implications for aquatic ecosystem stability. However, the effect of elevated CO2 on marine, brackish and freshwater algal motility is unclear. Here we show, using laboratory microscale and field mesoscale experiments, that three typical phytoplankton species had decreased motility with increased CO2. Polar marine Microglena sp., euryhaline Dunaliella salina and freshwater Chlamydomonas reinhardtii were grown under different CO2 concentrations for 5 years. Long-term acclimated Microglena sp. showed substantially decreased photo-responses in all treatments, with a photophobic reaction affecting intracellular calcium concentration. Genes regulating flagellar movement were significantly downregulated (P

Date: 2020
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DOI: 10.1038/s41558-020-0776-2

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