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Article

The Role of Selected Wavelengths of Light in the Activity of Photosystem II in Gloeobacter violaceus

The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239 Kraków, Poland
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Academic Editors: Joanna Grzyb, Beata Myśliwa Kurdziel, Katarzyna Gieczewska and Salvatore Passarella
Int. J. Mol. Sci. 2021, 22(8), 4021; https://doi.org/10.3390/ijms22084021
Received: 17 March 2021 / Revised: 9 April 2021 / Accepted: 12 April 2021 / Published: 13 April 2021
Gloeobacter violaceus is a cyanobacteria species with a lack of thylakoids, while photosynthetic antennas, i.e., phycobilisomes (PBSs), photosystem II (PSII), and I (PSI), are located in the cytoplasmic membrane. We verified the hypothesis that blue–red (BR) light supplemented with a far-red (FR), ultraviolet A (UVA), and green (G) light can affect the photosynthetic electron transport chain in PSII and explain the differences in the growth of the G. violaceus culture. The cyanobacteria were cultured under different light conditions. The largest increase in G. violaceus biomass was observed only under BR + FR and BR + G light. Moreover, the shape of the G. violaceus cells was modified by the spectrum with the addition of G light. Furthermore, it was found that both the spectral composition of light and age of the cyanobacterial culture affect the different content of phycobiliproteins in the photosynthetic antennas (PBS). Most likely, in cells grown under light conditions with the addition of FR and G light, the average antenna size increased due to the inactivation of some reaction centers in PSII. Moreover, the role of PSI and gloeorhodopsin as supplementary sources of metabolic energy in the G. violaceus growth is discussed. View Full-Text
Keywords: absorption spectra; cyanobacteria; OJIP-test; phycobilisome; photosynthesis; photosynthetic pigments absorption spectra; cyanobacteria; OJIP-test; phycobilisome; photosynthesis; photosynthetic pigments
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MDPI and ACS Style

Kula-Maximenko, M.; Zieliński, K.J.; Ślesak, I. The Role of Selected Wavelengths of Light in the Activity of Photosystem II in Gloeobacter violaceus. Int. J. Mol. Sci. 2021, 22, 4021. https://doi.org/10.3390/ijms22084021

AMA Style

Kula-Maximenko M, Zieliński KJ, Ślesak I. The Role of Selected Wavelengths of Light in the Activity of Photosystem II in Gloeobacter violaceus. International Journal of Molecular Sciences. 2021; 22(8):4021. https://doi.org/10.3390/ijms22084021

Chicago/Turabian Style

Kula-Maximenko, Monika, Kamil J. Zieliński, and Ireneusz Ślesak. 2021. "The Role of Selected Wavelengths of Light in the Activity of Photosystem II in Gloeobacter violaceus" International Journal of Molecular Sciences 22, no. 8: 4021. https://doi.org/10.3390/ijms22084021

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