Seawater carbonate chemistry and photoprotective strategies controlling electron flow through PSII and PSI in red macroalgae Pyropia yezoensis
While intertidal macroalgae are exposed to drastic changes in solar photosynthetically active radiation (PAR) and ultraviolet radiation (UVR) during a diel cycle, and to ocean acidification (OA) associated with increasing CO2 levels, little is known about their photosynthetic performance under the c...
Main Authors: | , , , , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2021
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.941921 https://doi.org/10.1594/PANGAEA.941921 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.941921 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Activity of cyclic electron transport around Photosystem I standard deviation Alkalinity total Aragonite saturation state Benthos Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved Carbonate ion Carbonate system computation flag Carbon dioxide Coast and continental shelf Effective quantum yield EXP Experiment Experiment duration Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Gaogong_Island_OA Laboratory experiment Light Macroalgae North Pacific OA-ICC Ocean Acidification International Coordination Centre Oxygen evolving complex activity Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) |
spellingShingle |
Activity of cyclic electron transport around Photosystem I standard deviation Alkalinity total Aragonite saturation state Benthos Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved Carbonate ion Carbonate system computation flag Carbon dioxide Coast and continental shelf Effective quantum yield EXP Experiment Experiment duration Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Gaogong_Island_OA Laboratory experiment Light Macroalgae North Pacific OA-ICC Ocean Acidification International Coordination Centre Oxygen evolving complex activity Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) Zhang, Di Xu, Juntian Beer, Sven Beardall, John Zhou, Cong Gao, Kunshan Seawater carbonate chemistry and photoprotective strategies controlling electron flow through PSII and PSI in red macroalgae Pyropia yezoensis |
topic_facet |
Activity of cyclic electron transport around Photosystem I standard deviation Alkalinity total Aragonite saturation state Benthos Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved Carbonate ion Carbonate system computation flag Carbon dioxide Coast and continental shelf Effective quantum yield EXP Experiment Experiment duration Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Gaogong_Island_OA Laboratory experiment Light Macroalgae North Pacific OA-ICC Ocean Acidification International Coordination Centre Oxygen evolving complex activity Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) |
description |
While intertidal macroalgae are exposed to drastic changes in solar photosynthetically active radiation (PAR) and ultraviolet radiation (UVR) during a diel cycle, and to ocean acidification (OA) associated with increasing CO2 levels, little is known about their photosynthetic performance under the combined influences of these drivers. In this work, we examined the photoprotective strategies controlling electron flow through photosystems II (PSII) and photosystem I (PSI) in response to solar radiation with or without UVR and an elevated CO2 concentration in the intertidal, commercially important, red macroalgae Pyropia (previously Porphyra) yezoensis. By using chlorophyll fluorescence techniques, we found that high levels of PAR alone induced photoinhibition of the inter-photosystem electron transport carriers, as evidenced by the increase of chlorophyll fluorescence in both the J- and I-steps of Kautsky curves. In the presence of UVR, photoinduced inhibition was mainly identified in the O2-evolving complex (OEC) and PSII, as evidenced by a significant increase in the variable fluorescence at the K-step (Fk) of Kautsky curves relative to the amplitude of FJ−Fo (Wk) and a decrease of the maximum quantum yield of PSII (Fv/Fm). Such inhibition appeared to ameliorate the function of downstream electron acceptors, protecting PSI from over-reduction. In turn, the stable PSI activity increased the efficiency of cyclic electron transport (CET) around PSI, dissipating excess energy and supplying ATP for CO2 assimilation. When the algal thalli were grown under increased CO2 and OA conditions, the CET activity became further enhanced, which maintained the OEC stability and thus markedly alleviating the UVR-induced photoinhibition. In conclusion, the well-established coordination between PSII and PSI endows P. yezoensis with a highly efficient photochemical performance in response to UVR, especially under the scenario of future increased CO2 levels and OA. |
format |
Dataset |
author |
Zhang, Di Xu, Juntian Beer, Sven Beardall, John Zhou, Cong Gao, Kunshan |
author_facet |
Zhang, Di Xu, Juntian Beer, Sven Beardall, John Zhou, Cong Gao, Kunshan |
author_sort |
Zhang, Di |
title |
Seawater carbonate chemistry and photoprotective strategies controlling electron flow through PSII and PSI in red macroalgae Pyropia yezoensis |
title_short |
Seawater carbonate chemistry and photoprotective strategies controlling electron flow through PSII and PSI in red macroalgae Pyropia yezoensis |
title_full |
Seawater carbonate chemistry and photoprotective strategies controlling electron flow through PSII and PSI in red macroalgae Pyropia yezoensis |
title_fullStr |
Seawater carbonate chemistry and photoprotective strategies controlling electron flow through PSII and PSI in red macroalgae Pyropia yezoensis |
title_full_unstemmed |
Seawater carbonate chemistry and photoprotective strategies controlling electron flow through PSII and PSI in red macroalgae Pyropia yezoensis |
title_sort |
seawater carbonate chemistry and photoprotective strategies controlling electron flow through psii and psi in red macroalgae pyropia yezoensis |
publisher |
PANGAEA |
publishDate |
2021 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.941921 https://doi.org/10.1594/PANGAEA.941921 |
op_coverage |
LATITUDE: 34.725300 * LONGITUDE: 119.532500 * DATE/TIME START: 2017-12-12T00:00:00 * DATE/TIME END: 2017-12-12T00:00:00 |
long_lat |
ENVELOPE(-63.000,-63.000,-64.300,-64.300) ENVELOPE(119.532500,119.532500,34.725300,34.725300) |
geographic |
Pacific Psi |
geographic_facet |
Pacific Psi |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
Zhang, Di; Xu, Juntian; Beer, Sven; Beardall, John; Zhou, Cong; Gao, Kunshan (2021): Increased CO2 Relevant to Future Ocean Acidification Alleviates the Sensitivity of a Red Macroalgae to Solar Ultraviolet Irradiance by Modulating the Synergy Between Photosystems II and I. Frontiers in Plant Science, 12, https://doi.org/10.3389/fpls.2021.726538 Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James (2021): seacarb: seawater carbonate chemistry with R. R package version 3.2.16. https://cran.r-project.org/web/packages/seacarb/index.html https://doi.pangaea.de/10.1594/PANGAEA.941921 https://doi.org/10.1594/PANGAEA.941921 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.941921 https://doi.org/10.3389/fpls.2021.726538 |
_version_ |
1766158374198575104 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.941921 2023-05-15T17:51:16+02:00 Seawater carbonate chemistry and photoprotective strategies controlling electron flow through PSII and PSI in red macroalgae Pyropia yezoensis Zhang, Di Xu, Juntian Beer, Sven Beardall, John Zhou, Cong Gao, Kunshan LATITUDE: 34.725300 * LONGITUDE: 119.532500 * DATE/TIME START: 2017-12-12T00:00:00 * DATE/TIME END: 2017-12-12T00:00:00 2021-03-07 text/tab-separated-values, 276 data points https://doi.pangaea.de/10.1594/PANGAEA.941921 https://doi.org/10.1594/PANGAEA.941921 en eng PANGAEA Zhang, Di; Xu, Juntian; Beer, Sven; Beardall, John; Zhou, Cong; Gao, Kunshan (2021): Increased CO2 Relevant to Future Ocean Acidification Alleviates the Sensitivity of a Red Macroalgae to Solar Ultraviolet Irradiance by Modulating the Synergy Between Photosystems II and I. Frontiers in Plant Science, 12, https://doi.org/10.3389/fpls.2021.726538 Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James (2021): seacarb: seawater carbonate chemistry with R. R package version 3.2.16. https://cran.r-project.org/web/packages/seacarb/index.html https://doi.pangaea.de/10.1594/PANGAEA.941921 https://doi.org/10.1594/PANGAEA.941921 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Activity of cyclic electron transport around Photosystem I standard deviation Alkalinity total Aragonite saturation state Benthos Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved Carbonate ion Carbonate system computation flag Carbon dioxide Coast and continental shelf Effective quantum yield EXP Experiment Experiment duration Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Gaogong_Island_OA Laboratory experiment Light Macroalgae North Pacific OA-ICC Ocean Acidification International Coordination Centre Oxygen evolving complex activity Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) Dataset 2021 ftpangaea https://doi.org/10.1594/PANGAEA.941921 https://doi.org/10.3389/fpls.2021.726538 2023-01-20T09:15:48Z While intertidal macroalgae are exposed to drastic changes in solar photosynthetically active radiation (PAR) and ultraviolet radiation (UVR) during a diel cycle, and to ocean acidification (OA) associated with increasing CO2 levels, little is known about their photosynthetic performance under the combined influences of these drivers. In this work, we examined the photoprotective strategies controlling electron flow through photosystems II (PSII) and photosystem I (PSI) in response to solar radiation with or without UVR and an elevated CO2 concentration in the intertidal, commercially important, red macroalgae Pyropia (previously Porphyra) yezoensis. By using chlorophyll fluorescence techniques, we found that high levels of PAR alone induced photoinhibition of the inter-photosystem electron transport carriers, as evidenced by the increase of chlorophyll fluorescence in both the J- and I-steps of Kautsky curves. In the presence of UVR, photoinduced inhibition was mainly identified in the O2-evolving complex (OEC) and PSII, as evidenced by a significant increase in the variable fluorescence at the K-step (Fk) of Kautsky curves relative to the amplitude of FJ−Fo (Wk) and a decrease of the maximum quantum yield of PSII (Fv/Fm). Such inhibition appeared to ameliorate the function of downstream electron acceptors, protecting PSI from over-reduction. In turn, the stable PSI activity increased the efficiency of cyclic electron transport (CET) around PSI, dissipating excess energy and supplying ATP for CO2 assimilation. When the algal thalli were grown under increased CO2 and OA conditions, the CET activity became further enhanced, which maintained the OEC stability and thus markedly alleviating the UVR-induced photoinhibition. In conclusion, the well-established coordination between PSII and PSI endows P. yezoensis with a highly efficient photochemical performance in response to UVR, especially under the scenario of future increased CO2 levels and OA. Dataset Ocean acidification PANGAEA - Data Publisher for Earth & Environmental Science Pacific Psi ENVELOPE(-63.000,-63.000,-64.300,-64.300) ENVELOPE(119.532500,119.532500,34.725300,34.725300) |