Evaluating the effect of temperature on photosynthesis and respiration of articulated coralline algae using oxygen evolution and chlorophyll a fluorescence

Evaluating the effect of temperature on photosynthesis and respiration of articulated coralline algae using oxygen evolution and chlorophyll a fluorescence

Coralline algae form abundant and ecologically important submerged aquatic vegetation habitats throughout the world. However, algal performance is threatened by climate change and ocean acidification. Previous studies suggest that their photosynthetic performance will be compromised mainly at elevat...

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Autores principales: Vásquez-Elizondo, Román Manuel, Kräemer, Wiebke E, Cabello-Pasini, Alejandro
Formato: Online
Lenguaje:eng
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Publicado: Iniversidad Autónoma de Baja California 2022
Acceso en línea:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3269
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institution Ciencias Marinas
collection OJS
language eng
spa
format Online
author Vásquez-Elizondo, Román Manuel
Kräemer, Wiebke E
Cabello-Pasini, Alejandro
spellingShingle Vásquez-Elizondo, Román Manuel
Kräemer, Wiebke E
Cabello-Pasini, Alejandro
Evaluating the effect of temperature on photosynthesis and respiration of articulated coralline algae using oxygen evolution and chlorophyll a fluorescence
author_facet Vásquez-Elizondo, Román Manuel
Kräemer, Wiebke E
Cabello-Pasini, Alejandro
author_sort Vásquez-Elizondo, Román Manuel
title Evaluating the effect of temperature on photosynthesis and respiration of articulated coralline algae using oxygen evolution and chlorophyll a fluorescence
title_short Evaluating the effect of temperature on photosynthesis and respiration of articulated coralline algae using oxygen evolution and chlorophyll a fluorescence
title_full Evaluating the effect of temperature on photosynthesis and respiration of articulated coralline algae using oxygen evolution and chlorophyll a fluorescence
title_fullStr Evaluating the effect of temperature on photosynthesis and respiration of articulated coralline algae using oxygen evolution and chlorophyll a fluorescence
title_full_unstemmed Evaluating the effect of temperature on photosynthesis and respiration of articulated coralline algae using oxygen evolution and chlorophyll a fluorescence
title_sort evaluating the effect of temperature on photosynthesis and respiration of articulated coralline algae using oxygen evolution and chlorophyll a fluorescence
description Coralline algae form abundant and ecologically important submerged aquatic vegetation habitats throughout the world. However, algal performance is threatened by climate change and ocean acidification. Previous studies suggest that their photosynthetic performance will be compromised mainly at elevated temperatures. Understanding the impact of diverse climate change scenarios requires a clear and thorough comprehension of the photosynthetic response to temperature gradients. The objective of this study was to evaluate the short-term effect of temperature (10–35 °C) on the gross photosynthesis (GPS), respiration, and electron transport rates (ETRs) of 3 articulated coralline algae (Lithothrix aspergillum, Corallina officinalis, and Bossiella orbigniana) for a better understanding of their metabolism and to investigate the relationship between GPS and ETR as a function of temperature. The results showed that the coralline algal metabolism is highly sensitive to temperature, but responses were species-specific and can be related to their light adaptation/acclimation; the high-light-adapted L. aspergillum was least negatively affected. The photosynthesis to respiration ratio was optimal between 20 and 25 °C according to the local thermal regime but was significantly reduced toward higher temperatures, indicating strong carbon imbalances and highlighting the relevance of thermal stress for coralline algal performance. A strong correlation between GPS and ETR was found between 10 and 30 °C in all species, but both above saturation irradiances and at elevated temperatures (≥30 °C), a clear deviation from linearity occurred. This suggests that ETR is not a good proxy to estimate photosynthetic activity under light or thermal stress. This information should be useful for studies implementing global change scenarios and pulse amplitude modulated (PAM) fluorometry in coralline algae.
publisher Iniversidad Autónoma de Baja California
publishDate 2022
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3269
_version_ 1792095478546956288
spelling oai:cienciasmarinas.com.mx:article-32692023-12-20T19:07:10Z Evaluating the effect of temperature on photosynthesis and respiration of articulated coralline algae using oxygen evolution and chlorophyll a fluorescence Evaluación del efecto de la temperatura en la fotosíntesis y la respiración de algas coralinas articuladas utilizando la evolución de oxígeno y la fluorescencia de la clorofila a Vásquez-Elizondo, Román Manuel Kräemer, Wiebke E Cabello-Pasini, Alejandro coralline algae PAM fluorescence photosynthesis temperatura algas coralinas fluorescencia PAM fotosíntesis temperatura Coralline algae form abundant and ecologically important submerged aquatic vegetation habitats throughout the world. However, algal performance is threatened by climate change and ocean acidification. Previous studies suggest that their photosynthetic performance will be compromised mainly at elevated temperatures. Understanding the impact of diverse climate change scenarios requires a clear and thorough comprehension of the photosynthetic response to temperature gradients. The objective of this study was to evaluate the short-term effect of temperature (10–35 °C) on the gross photosynthesis (GPS), respiration, and electron transport rates (ETRs) of 3 articulated coralline algae (Lithothrix aspergillum, Corallina officinalis, and Bossiella orbigniana) for a better understanding of their metabolism and to investigate the relationship between GPS and ETR as a function of temperature. The results showed that the coralline algal metabolism is highly sensitive to temperature, but responses were species-specific and can be related to their light adaptation/acclimation; the high-light-adapted L. aspergillum was least negatively affected. The photosynthesis to respiration ratio was optimal between 20 and 25 °C according to the local thermal regime but was significantly reduced toward higher temperatures, indicating strong carbon imbalances and highlighting the relevance of thermal stress for coralline algal performance. A strong correlation between GPS and ETR was found between 10 and 30 °C in all species, but both above saturation irradiances and at elevated temperatures (≥30 °C), a clear deviation from linearity occurred. This suggests that ETR is not a good proxy to estimate photosynthetic activity under light or thermal stress. This information should be useful for studies implementing global change scenarios and pulse amplitude modulated (PAM) fluorometry in coralline algae. Las algas coralinas forman hábitats vegetales sumergidos, ecológicamente importantes y abundantes, alrededor del mundo. El desempeño algal, no obstante, está amenazado por el cambio climático y la acidificación del océano. Estudios previos han sugerido que su desempeño fotosintético estará comprometido, principalmente a elevadas temperaturas. El entendimiento del impacto de diversos escenarios del cambio climático requiere comprensión exhaustiva de la respuesta fotosintética a los gradientes de temperatura. Este estudio evaluó el efecto a corto plazo de la temperatura (10–35 °C) en la fotosíntesis bruta (FSB), la respiración y la tasa del transporte de electrones (TTE) de 3 especies de algas coralinas articuladas (Lithothrix aspergillum, Corallina officinalis y Bossiella orbigniana) para entender mejor su metabolismo e investigar la relación entre la FSB y la TTE en función de la temperatura. Los resultados mostraron que el metabolismo coralino es altamente sensible a la temperatura, pero las respuestas fueron específicas para cada especie y pueden estar relacionadas con su aclimatación/adaptación lumínica; L. aspergillum, alga adaptada a alta luz, fue la menos afectada negativamente. La razón fotosíntesis: respiración fue óptima a 20–25 °C, según el régimen térmico local, pero se redujo significativamente a temperaturas altas; esto indica fuertes desbalances de carbono y resalta la relevancia del estrés térmico para el desempeño fotosintético coralino. Se encontró una fuerte correlación entre la FSB y la TTE entre los 10 y 30 °C para todas las especies, pero se observó una clara desviación de esta linealidad por encima de las irradiancias de saturación y a temperaturas elevadas (≥30 °C). Lo anterior sugiere que la TTE no es un buen indicador de la actividad fotosintética bajo condiciones de estrés lumínico o térmico. Esta información debería ser útil para estudios que implementen escenarios de cambio global y fluorometría de pulso de amplitud modulada (PAM) en algas coralinas. Iniversidad Autónoma de Baja California 2022-10-28 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf text/xml text/xml https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3269 10.7773/cm.y2022.3269 Ciencias Marinas; Vol. 48 (2022) Ciencias Marinas; Vol. 48 (2022) 2395-9053 0185-3880 eng spa https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3269/420420697 https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3269/420420922 https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3269/420420923 Copyright (c) 2022 Román Manuel Vásquez-Elizondo, Wiebke E Kräemer, Alejandro Cabello-Pasini https://creativecommons.org/licenses/by/4.0

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