The slow S to M fluorescence rise in cyanobacteria is due to a state 2 to state 1 transition

Kaňa, Radek; Kotabová, Eva; Komárek, Ondřej; Šedivá, Barbora; Papageorgiou, George C.; Govindjee, .; Prášil, Ondřej

doi:10.1016/j.bbabio.2012.02.024

Cited by 89 publications

(59 citation statements)

References 64 publications

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“…Maximal NPQ value was around 0.4 (Fig. 6), and resembled the value determined for cyanobacteria (54), indicating a similar amount of energy that is dissipated during NPQ despite different quenchers employed by both phototrophs. The NPQ was inhibited in vivo after the addition of an uncoupler NH 4 Cl (Fig.…”

Section: Investigation Into the In Vivo And In Vitro Photoprotectionsupporting

confidence: 72%

“…5). A typical measuring protocol has been applied to exclude the effect of state transitions on the maximal fluorescence in dark (F M ) that is known to be affected by the phycobilisome binding in cyanobacteria (54). There were no significant changes in the F M value after a short period of illumination with low intensity blue light, excluding the putative influence of state transitions on the measured F M values.…”

Section: Investigation Into the In Vivo And In Vitro Photoprotectionmentioning

confidence: 99%

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A Reaction Center-dependent Photoprotection Mechanism in a Highly Robust Photosystem II from an Extremophilic Red Alga, Cyanidioschyzon merolae

Krupnik

Kotabová

Bezouwen

et al. 2013

Journal of Biological Chemistry

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Background: PSII is a protein complex that captures sunlight to drive water oxidation. Results: Cyanidioschyzon merolae PSII is protected by reversible reaction center-based non-photochemical quenching. Conclusion: C. merolae PSII employs reaction center non-photochemical quenching as the main photoprotective mechanism. Significance: We provide the first direct evidence of the PSII reaction center as the primary locus of non-photochemical quenching in the extremophilic red algae.

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Section: Investigation Into the In Vivo And In Vitro Photoprotectionsupporting

confidence: 72%

Section: Investigation Into the In Vivo And In Vitro Photoprotectionmentioning

confidence: 99%

A Reaction Center-dependent Photoprotection Mechanism in a Highly Robust Photosystem II from an Extremophilic Red Alga, Cyanidioschyzon merolae

Krupnik

Kotabová

Bezouwen

et al. 2013

Journal of Biological Chemistry

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“…The S-M rise is dominant in cyanobacteria in contrast to the higher plants and green algae (for review, see Papageorgiou et al, 2007). The S-M rise was recently recognized as a result of the state 2-to-state 1 transition in cyanobacteria (Kaňa et al, 2012a). The slow fluorescence S-M rise in maximal fluorescence was detected also in P. cruentum between 10 and 50 s after irradiation of dark-adapted cells (Fig.…”

Section: Physiological Importance Of Pbsome Mobilitymentioning

confidence: 88%

“…Chlorophyll a fluorescence induction kinetics were measured with the FL-100 Fluorometer (Photon Systems Instruments) as described previously (Kaňa et al, 2012a). Orange actinic light (590 nm; half-width Dl = 20 nm; 300 mmol m 22 s 21 ) was used for excitation, and fluorescence induction was measured in the 690-to 750-nm range.…”

Section: Fluorescence Measurementsmentioning

confidence: 99%

Phycobilisome Mobility and Its Role in the Regulation of Light Harvesting in Red Algae

et al. 2014

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Red algae represent an evolutionarily important group that gave rise to the whole red clade of photosynthetic organisms. They contain a unique combination of light-harvesting systems represented by a membrane-bound antenna and by phycobilisomes situated on thylakoid membrane surfaces. So far, very little has been revealed about the mobility of their phycobilisomes and the regulation of their light-harvesting system in general. Therefore, we carried out a detailed analysis of phycobilisome dynamics in several red alga strains and compared these results with the presence (or absence) of photoprotective mechanisms. Our data conclusively prove phycobilisome mobility in two model mesophilic red alga strains, Porphyridium cruentum and Rhodella violacea. In contrast, there was almost no phycobilisome mobility in the thermophilic red alga Cyanidium caldarium that was not caused by a decrease in lipid desaturation in this extremophile. Experimental data attributed this immobility to the strong phycobilisomephotosystem interaction that highly restricted phycobilisome movement. Variations in phycobilisome mobility reflect the different ways in which light-harvesting antennae can be regulated in mesophilic and thermophilic red algae. Fluorescence changes attributed in cyanobacteria to state transitions were observed only in mesophilic P. cruentum with mobile phycobilisomes, and they were absent in the extremophilic C. caldarium with immobile phycobilisomes. We suggest that state transitions have an important regulatory function in mesophilic red algae; however, in thermophilic red algae, this process is replaced by nonphotochemical quenching.

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“…441 dominated the biomass, significantly higher suggests that an increase in CO 2 stimulated efficiency in light absorption and utilization, 482 which resulted in the higher rates of carbon fixation shown in Figure 9. Using spectral de-483 convolution of low temperature emission spectroscopy measurements, the peak at 691 nm is 484 emitted from active PS II chlorophylls and 711 nm from PS I chlorophylls (Kaňa et al, 2012). 485…”

Section: Effects Of Co 2 Enrichment On Phytoplankton Photosynthesis Amentioning

confidence: 99%

Effect of CO2 enrichment on phytoplankton photosynthesis in the North Atlantic sub-tropical gyre

Tilstone

Šedivá

Tarran

et al. 2017

Progress in Oceanography

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22The effects of changes in CO 2 concentration in seawater on phytoplankton community 23 structure and photosynthesis were studied in the North Atlantic sub-tropical gyre. Three 24 shipboard incubations were conducted for 48 h at ~760 ppm CO 2 and control (360 ppm CO 2 ) 25 from 49°N to 7°N during October and November 2010. Elevated CO 2 caused a decrease in pH 26 to ~7.94 compared to ~8.27 in the control. During one experiment, the biomass of nano-and 27 picoeukaryotes increased under CO 2 enrichment, but primary production decreased relative to 28 the control. In two of the experiments the biomass was dominated by dinoflagellates, and 29 there was a significant increase in the maximum photosynthetic rate (

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The slow S to M fluorescence rise in cyanobacteria is due to a state 2 to state 1 transition

Cited by 89 publications

References 64 publications

A Reaction Center-dependent Photoprotection Mechanism in a Highly Robust Photosystem II from an Extremophilic Red Alga, Cyanidioschyzon merolae

A Reaction Center-dependent Photoprotection Mechanism in a Highly Robust Photosystem II from an Extremophilic Red Alga, Cyanidioschyzon merolae

Phycobilisome Mobility and Its Role in the Regulation of Light Harvesting in Red Algae

Effect of CO2 enrichment on phytoplankton photosynthesis in the North Atlantic sub-tropical gyre

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