Abstract
This study aimed to analyze the effect of magnetic field (MF) application on the metabolism of Synechococcus elongatus PCC 7942. Concentrations of biomass, carbohydrate, protein, lipid, and photosynthetic pigments (chlorophyll-a, C-phycocyanin, allophycocyanin and phycoerythrin) were determined. In cultures with MF application (30 mT for 24 h d−1), there were increases of 47.5% in total protein content, 87.4% in C-phycocyanin, and 332.8% in allophycocyanin contents, by comparison with the control. Allophycocyanin is the most affected pigment by MF application. Therefore, its biosynthetic route was investigated, and four genes related to its synthesis were found. However, the analysis of the gene expression showed no statistical differences from the control culture, which suggests that induction of such genes may occur soon after MF application with consequent stabilization over time. MF application may be a cost-effective alternative to increase production of compounds of commercial interest by cyanobacteria.
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Acknowledgements
The authors are thankful for the financial support provided by the National Counsel for Technological and Scientific Development – Brazil (CNPq). L. F. Marins is a research fellow from Brazilian CNPq (Proc. 309634/2018-0). L. O. Santos is a research fellow from CNPq (Proc. 312486/2022-7).
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The authors received support from National Counsel for Technological and Scientific Development–Brazil (CNPq) for the submitted work.
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RRCdN, MdRM, RdSA, JAVC, LFM, and LOdS: contributed to the study conception and design. Material preparation, data collection and analysis were performed by RRCdN, MdRM, and RdSA. The first draft of the manuscript was written by RRCdN and MdRM, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Nascimento, R.R.C., Moreno, M.R., Azevedo, R.S. et al. Magnetic Fields as Inducers of Phycobiliprotein Production by Synechococcus elongatus PCC 7942. Curr Microbiol 80, 242 (2023). https://doi.org/10.1007/s00284-023-03348-3
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DOI: https://doi.org/10.1007/s00284-023-03348-3