WebFeb 17, 2024 · For all of the light treatments (except W), the maximum photochemical efficiencies of photosystem II (PSII) under dark adaptation (Fv/Fm) and light adaptation (Fv′/Fm′) were significantly higher than those in the Y treatment; no differences were noted for the other treatments (Figs. 3 a-b and 4 ). WebJan 1, 2024 · Because the Fv / Fm value is the ratio of the light energy allocated to photochemistry, it will never be 100% ( Fv / Fm = 1). Therefore, its accepted maximum values are 0.6 for cyanobacteria, 0.8 for green algae (Masojídek et al., 2011) and 0.6 for K. mikimotoi (Napoléon et al., 2013).
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WebAug 1, 2001 · A closely related parameter, the maximum quantum yield for stable charge separation of PSII, (φPSII)m, can be estimated by measuring the increase in fluorescence yield from dark‐adapted minimal fluorescence (Fo) to maximal fluorescence (Fm) associated with the closing of photosynthetic reaction centers with saturating light or … WebDec 5, 2016 · Non-photochemical quenching (NPQ) and relative electron transport rate could respond rapidly to varying light intensities. High-light treatment also resulted in increased … effects of exxon valdez oil spill
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WebThe chlorophyll fluorescence parameter Fv /Fm reflects the maximum quantum efficiency of photosystem II (PSII) photochemistry and has been widely used for early stress detection in plants. Previously, we have used a three-tiered approach of phenotyping by Fv /Fm to identify naturally existing geneti … WebApr 1, 2001 · Changes in chlorophyll fluorescence (Fv/Fm and effective quantum yield, φII) indicated that PSII function was inhibited during the initial stage of acclimation but gradually improved with time, indicating an incomplete protection of photosynthetic and growth‐related processes. Expand 80 View 7 excerpts, references methods and background WebOct 12, 2024 · The Fv/Fm parameter was the most involved one in explaining the changes in lipid induction (22.4%), followed by its quadratic term (21.5%). In the case of chlorophyll which had the third highest explanatory power (16.0%), only the main effects existed without any interaction or quadratic term. effects of eyjafjallajokull eruption 2010