The Role of Selected Wavelengths of Light in the Activity of Photosystem II in
| Autor: | Kamil Zieliński, Ireneusz Ślesak, Monika Kula-Maximenko |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Cyanobacteria Photosystem II absorption spectra Light Photosynthesis 01 natural sciences Models Biological Catalysis Article Fluorescence Inorganic Chemistry lcsh:Chemistry 03 medical and health sciences OJIP-test photosynthetic pigments Physical and Theoretical Chemistry Gloeobacter violaceus Molecular Biology lcsh:QH301-705.5 Spectroscopy Principal Component Analysis biology Chemistry Phycobiliprotein Organic Chemistry Photosystem II Protein Complex General Medicine Pigments Biological biology.organism_classification phycobilisome Computer Science Applications Wavelength 030104 developmental biology lcsh:Biology (General) lcsh:QD1-999 Thylakoid Biophysics Phycobilisome 010606 plant biology & botany |
| Zdroj: | International Journal of Molecular Sciences Volume 22 Issue 8 International Journal of Molecular Sciences, Vol 22, Iss 4021, p 4021 (2021) |
| ISSN: | 1422-0067 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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