DataSheet_1_Photorespiration in eelgrass (Zostera marina L.): A photoprotection mechanism for survival in a CO2-limited world.pdf
Photorespiration, commonly viewed as a loss in photosynthetic productivity of C3 plants, is expected to decline with increasing atmospheric CO 2 , even though photorespiration plays an important role in the oxidative stress responses. This study aimed to quantify the role of photorespiration and alt...
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ftfrontimediafig:oai:figshare.com:article/21541008 2024-09-15T18:28:06+00:00 DataSheet_1_Photorespiration in eelgrass (Zostera marina L.): A photoprotection mechanism for survival in a CO2-limited world.pdf Billur Celebi-Ergin Richard C. Zimmerman Victoria J. Hill 2022-11-11T04:50:42Z https://doi.org/10.3389/fpls.2022.1025416.s001 https://figshare.com/articles/dataset/DataSheet_1_Photorespiration_in_eelgrass_Zostera_marina_L_A_photoprotection_mechanism_for_survival_in_a_CO2-limited_world_pdf/21541008 unknown doi:10.3389/fpls.2022.1025416.s001 https://figshare.com/articles/dataset/DataSheet_1_Photorespiration_in_eelgrass_Zostera_marina_L_A_photoprotection_mechanism_for_survival_in_a_CO2-limited_world_pdf/21541008 CC BY 4.0 Botany Plant Biology Plant Systematics and Taxonomy Plant Cell and Molecular Biology Plant Developmental and Reproductive Biology Plant Pathology Plant Physiology Plant Biology not elsewhere classified CO2 non-photochemical quenching ocean acidification photorespiration photosynthesis quantum yield seagrass Dataset 2022 ftfrontimediafig https://doi.org/10.3389/fpls.2022.1025416.s001 2024-08-19T06:19:51Z Photorespiration, commonly viewed as a loss in photosynthetic productivity of C3 plants, is expected to decline with increasing atmospheric CO 2 , even though photorespiration plays an important role in the oxidative stress responses. This study aimed to quantify the role of photorespiration and alternative photoprotection mechanisms in Zostera marina L. (eelgrass), a carbon-limited marine C3 plant, in response to ocean acidification. Plants were grown in controlled outdoor aquaria at different [CO 2 ] aq ranging from ~55 (ambient) to ~2121 μM for 13 months and compared for differences in leaf photochemistry by simultaneous measurements of O 2 flux and variable fluorescence. At ambient [CO 2 ], photosynthesis was carbon limited and the excess photon absorption was diverted both to photorespiration and non-photochemical quenching (NPQ). The dynamic range of NPQ regulation in ambient grown plants, in response to instantaneous changes in [CO 2 ] aq , suggested considerable tolerance for fluctuating environmental conditions. However, 60 to 80% of maximum photosynthetic capacity of ambient plants was diverted to photorespiration resulting in limited carbon fixation. The photosynthesis to respiration ratio (P E : R D ) of ambient grown plants increased 6-fold when measured under high CO 2 because photorespiration was virtually suppressed. Plants acclimated to high CO 2 maintained 4-fold higher P E : R D than ambient grown plants as a result of a 60% reduction in photorespiration. The O 2 production efficiency per unit chlorophyll was not affected by the CO 2 environment in which the plants were grown. Yet, CO 2 enrichment decreased the light level to initiate NPQ activity and downregulated the biomass specific pigment content by 50% and area specific pigment content by 30%. Thus, phenotypic acclimation to ocean carbonation in eelgrass, indicating the coupling between the regulation of photosynthetic structure and metabolic carbon demands, involved the downregulation of light harvesting by the photosynthetic apparatus, ... Dataset Ocean acidification Frontiers: Figshare |
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Frontiers: Figshare |
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ftfrontimediafig |
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unknown |
topic |
Botany Plant Biology Plant Systematics and Taxonomy Plant Cell and Molecular Biology Plant Developmental and Reproductive Biology Plant Pathology Plant Physiology Plant Biology not elsewhere classified CO2 non-photochemical quenching ocean acidification photorespiration photosynthesis quantum yield seagrass |
spellingShingle |
Botany Plant Biology Plant Systematics and Taxonomy Plant Cell and Molecular Biology Plant Developmental and Reproductive Biology Plant Pathology Plant Physiology Plant Biology not elsewhere classified CO2 non-photochemical quenching ocean acidification photorespiration photosynthesis quantum yield seagrass Billur Celebi-Ergin Richard C. Zimmerman Victoria J. Hill DataSheet_1_Photorespiration in eelgrass (Zostera marina L.): A photoprotection mechanism for survival in a CO2-limited world.pdf |
topic_facet |
Botany Plant Biology Plant Systematics and Taxonomy Plant Cell and Molecular Biology Plant Developmental and Reproductive Biology Plant Pathology Plant Physiology Plant Biology not elsewhere classified CO2 non-photochemical quenching ocean acidification photorespiration photosynthesis quantum yield seagrass |
description |
Photorespiration, commonly viewed as a loss in photosynthetic productivity of C3 plants, is expected to decline with increasing atmospheric CO 2 , even though photorespiration plays an important role in the oxidative stress responses. This study aimed to quantify the role of photorespiration and alternative photoprotection mechanisms in Zostera marina L. (eelgrass), a carbon-limited marine C3 plant, in response to ocean acidification. Plants were grown in controlled outdoor aquaria at different [CO 2 ] aq ranging from ~55 (ambient) to ~2121 μM for 13 months and compared for differences in leaf photochemistry by simultaneous measurements of O 2 flux and variable fluorescence. At ambient [CO 2 ], photosynthesis was carbon limited and the excess photon absorption was diverted both to photorespiration and non-photochemical quenching (NPQ). The dynamic range of NPQ regulation in ambient grown plants, in response to instantaneous changes in [CO 2 ] aq , suggested considerable tolerance for fluctuating environmental conditions. However, 60 to 80% of maximum photosynthetic capacity of ambient plants was diverted to photorespiration resulting in limited carbon fixation. The photosynthesis to respiration ratio (P E : R D ) of ambient grown plants increased 6-fold when measured under high CO 2 because photorespiration was virtually suppressed. Plants acclimated to high CO 2 maintained 4-fold higher P E : R D than ambient grown plants as a result of a 60% reduction in photorespiration. The O 2 production efficiency per unit chlorophyll was not affected by the CO 2 environment in which the plants were grown. Yet, CO 2 enrichment decreased the light level to initiate NPQ activity and downregulated the biomass specific pigment content by 50% and area specific pigment content by 30%. Thus, phenotypic acclimation to ocean carbonation in eelgrass, indicating the coupling between the regulation of photosynthetic structure and metabolic carbon demands, involved the downregulation of light harvesting by the photosynthetic apparatus, ... |
format |
Dataset |
author |
Billur Celebi-Ergin Richard C. Zimmerman Victoria J. Hill |
author_facet |
Billur Celebi-Ergin Richard C. Zimmerman Victoria J. Hill |
author_sort |
Billur Celebi-Ergin |
title |
DataSheet_1_Photorespiration in eelgrass (Zostera marina L.): A photoprotection mechanism for survival in a CO2-limited world.pdf |
title_short |
DataSheet_1_Photorespiration in eelgrass (Zostera marina L.): A photoprotection mechanism for survival in a CO2-limited world.pdf |
title_full |
DataSheet_1_Photorespiration in eelgrass (Zostera marina L.): A photoprotection mechanism for survival in a CO2-limited world.pdf |
title_fullStr |
DataSheet_1_Photorespiration in eelgrass (Zostera marina L.): A photoprotection mechanism for survival in a CO2-limited world.pdf |
title_full_unstemmed |
DataSheet_1_Photorespiration in eelgrass (Zostera marina L.): A photoprotection mechanism for survival in a CO2-limited world.pdf |
title_sort |
datasheet_1_photorespiration in eelgrass (zostera marina l.): a photoprotection mechanism for survival in a co2-limited world.pdf |
publishDate |
2022 |
url |
https://doi.org/10.3389/fpls.2022.1025416.s001 https://figshare.com/articles/dataset/DataSheet_1_Photorespiration_in_eelgrass_Zostera_marina_L_A_photoprotection_mechanism_for_survival_in_a_CO2-limited_world_pdf/21541008 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
doi:10.3389/fpls.2022.1025416.s001 https://figshare.com/articles/dataset/DataSheet_1_Photorespiration_in_eelgrass_Zostera_marina_L_A_photoprotection_mechanism_for_survival_in_a_CO2-limited_world_pdf/21541008 |
op_rights |
CC BY 4.0 |
op_doi |
https://doi.org/10.3389/fpls.2022.1025416.s001 |
_version_ |
1810469415401029632 |