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Effects of nitric oxide on the growth of marine microalgae and carbonate chemistry parameters

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Abstract

Nitric oxide (NO) is a non-traditional regulator of the growth of plants and phytoplankton. Here, the growth of five marine phytoplankton species, Platymonas helgolandica var. tsingtaoensis, Platymonas subcordiformis, Skeletonema costatum, Gymnodinium sp., and Prorocentrum donghaiense, was monitored, and carbonate system parameters in the culture media were determined after adding different concentrations of NO and sodium nitroprusside (SNP, NO donor) solutions. The two dietary algae (P. helgolandica var. tsingtaoensis and P. subcordiformis) and three red tide algae (S. costatum, Gymnodinium sp., and P. donghaiense) showed different responses to the same NO concentration. The red tide algae were more sensitive to exogenous NO than the dietary algae. NO with a concentration of 1.4 × 10−6 mol L−1 had the optimal stimulatory effect on the growth of the microalgae and increased the cell density by 9.8–38.3%. SNP solution with a concentration of 100 μmol L−1 inhibited the growth of the two dietary algae, and the cell density decreased by 38.8–84.3%. The addition of 10 μmol L−1 SNP solution to the three red tide algae decreased the cell density by 95.3–99.9%. Low concentrations of SNP (0.1 μmol L−1 for the two dietary algae and 0.01 μmol L−1 for the red tide algae) slightly promoted the growth of microalgae. High concentrations of NO (100 μmol L−1 SNP) inhibited CO2 assimilation, whereas low concentrations of NO (0.01–1.0 μmol L−1 SNP) promoted CO2 assimilation, indicating that NO participates in the regulation of photosynthesis.

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Data availability

The datasets of the current study are available from the corresponding author on reasonable request.

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Acknowledgements

This word was financially supported by the National Natural Science Foundation of China (Grant Nos. 41676065 and 40706040) and the National Key Research and Development Program of China (Grant No. 2016YFA0601301).

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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by ZM. The first draft of the manuscript was written by LP and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Chun-Ying Liu.

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There are no conflicts of interest for this submission, and manuscript is approved by all authors for publication.

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No animals were used in this study.

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Responsible Editor: R. Bi.

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Li, PF., Zhao, M., Liu, CY. et al. Effects of nitric oxide on the growth of marine microalgae and carbonate chemistry parameters. Mar Biol 169, 1 (2022). https://doi.org/10.1007/s00227-021-03988-8

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  • DOI: https://doi.org/10.1007/s00227-021-03988-8

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