Abstract
We analyzed several approaches dealing with the components of non-photochemical energy dissipation and introduced improved versions of the equations used to calculate this parameter. The usage of these formulae depends on the conditions of the sample (acclimation to dark or irradiation, presence or absence of the “actinic light”). The parameter known as “excess” cannot be used as a component of energy partitioning. In reality, this parameter reflects the differences between potential and actual quantum yields of photochemistry.
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Abbreviations
- Chl:
-
chlorophyll
- PS:
-
photosystem
- WT:
-
wild type
- Φf,CON :
-
combined quantum efficiency (yield) of fluorescence and constitutive thermal dissipation
- ΦNF :
-
quantum yield of thermal dissipation associated with the presence of non-functional PS2
- ΦP :
-
actual quantum yield of photochemistry (electron transport) in PS2
- ΦPS2 :
-
potential quantum yield of photochemistry in PS2
- ΦREG :
-
quantum yield of dark-reversible non-photochemical quenching of the excitation energy.
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Kornyeyev, D., Holaday, A.S. Corrections to current approaches used to calculate energy partitioning in photosystem 2. Photosynthetica 46, 170–178 (2008). https://doi.org/10.1007/s11099-008-0028-6
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DOI: https://doi.org/10.1007/s11099-008-0028-6