Short-term effects of increased CO2, nitrate and temperature on photosynthetic activity in Ulva rigida (Chlorophyta) estimated by different pulse amplitude modulated fluorometers and oxygen evolution
| Autor: | Rafael M. Conde-Álvarez, Erik-J Malta, Solène Connan, Francisco Arenas, José Bonomi-Barufi, Maria H. Abreu, Dagmar B. Stengel, Udo Nitschke, Fungyi Chow, Paula S.M. Celis-Plá, Félix L. Figueroa, O. Meyerhoff, Daniel Robledo, María Teresa Mata |
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| Přispěvatelé: | Universidad de Málaga [Málaga] = University of Málaga [Málaga], Universidade Federal de Santa Catarina = Federal University of Santa Catarina [Florianópolis] (UFSC), Universidad de Playa Ancha, Martin Ryan Institute, National University of Ireland [Galway] (NUI Galway), Interdisciplinary Centre of Marine and Environmental Research [Matosinhos, Portugal] (CIIMAR), Universidade do Porto, Laboratoire de génie des procédés - environnement - agroalimentaire (GEPEA), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN)-Institut Universitaire de Technologie - Nantes (IUT Nantes), Université de Nantes (UN)-Institut Universitaire de Technologie Saint-Nazaire (IUT Saint-Nazaire), Université de Nantes (UN)-Institut Universitaire de Technologie - La Roche-sur-Yon (IUT La Roche-sur-Yon), Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL), Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), I.F.A.P.A. Centro 'Agua del Pino', Consejería de Agricultura y Pesca, University of São Paulo (USP), Universidad de Antofagasta, CIVESTAV-IPN |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Chlorophyll Photoinhibition Physiology Analytical chemistry Quantum yield Plant Science Chlorophyta Photosynthetic efficiency Photosynthesis 010603 evolutionary biology 01 natural sciences photosystem I and II Acidification chemistry.chemical_compound Ulva Nitrate nitrate UBO Photosystem Nitrates biology Chemistry electron transport rates 010604 marine biology & hydrobiology ACL Oxygen evolution Temperature temperature Carbon Dioxide biology.organism_classification Oxygen climate change in vivo chlorophyll a fluorescence 13. Climate action DISCOVERY [SDE.BE]Environmental Sciences/Biodiversity and Ecology CHLOROPHYTA |
| Zdroj: | Journal of Experimental Botany Journal of Experimental Botany, Oxford University Press (OUP), 2020, Early view, ⟨10.1093/jxb/eraa473⟩ Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP Journal Of Experimental Botany (0022-0957) (Oxford University Press (OUP)), 2021-02, Vol. 72, N. 2, P. 491-509 |
| ISSN: | 1460-2431 0022-0957 |
| Popis: | Short-term effects of pCO2 (700–380 ppm; High carbon (HC) and Low carbon (LC), respectively) and nitrate content (50–5 µM; High nitrogen (HN) and Low nitrogen (LN), respectively on photosynthesis were investigated in Ulva rigida (Chlorophyta) under solar radiation (in-situ) and in the laboratory under artificial light (ex-situ). After six days of incubation at ambient temperature (AT), algae were subjected to a 4 °C temperature increase (AT+4 °C) for 3 d. Both in-situ and ex-situ maximal electron transport rate (ETRmax) and in situ gross photosynthesis (GP), measured by O2 evolution, presented highest values under HCHN, and lowest under HCLN, across all measuring systems. Maximal quantum yield (Fv/Fm), and ETRmax of photosystem (PS) II [ETR(II)max] and PSI [ETR(I)max], decreased under HCLN at AT+4 °C. Ex situ ETR was higher than in situ ETR. At noon, Fv/Fm decreased (indicating photoinhibition), whereas ETR(II)max and maximal non-photochemical quenching (NPQmax) increased. ETR(II)max decreased under AT+ 4 °C in contrast to Fv/Fm, photosynthetic efficiency (α ETR) and saturated irradiance (EK). Thus, U. rigida exhibited a decrease in photosynthesis under acidification, changing LN, and AT+4 °C. These results emphasize the importance of studying the interaction between environmental parameters using in-situ versus ex-situ conditions, when aiming to evaluate the impact of global change on marine macroalgae. |
| Databáze: | OpenAIRE |
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