Physiological and morphological effects of a marine heatwave on the seagrass Cymodocea nodosa.


Journal

Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288

Informations de publication

Date de publication:
13 05 2022
Historique:
received: 09 02 2022
accepted: 05 05 2022
entrez: 13 5 2022
pubmed: 14 5 2022
medline: 18 5 2022
Statut: epublish

Résumé

Marine heatwaves (MHWs) are increasing in frequency and intensity as part of climate change, yet their impact on seagrass is poorly known. The present work evaluated the physiological and morphological responses of Cymodocea nodosa to a MHW. C. nodosa shoots were transplanted into a mesocosm facility. To simulate a MHW, water temperature was raised from 20 to 28 °C, kept 7 days at 28 °C, cooled down back to 20 °C and then maintained at 20 °C during an 8-day recovery period. The potentially stressful effects of the simulated heatwave on the photosynthetic performance, antioxidative-stress level and area vs dry weight ratio of leaves were investigated. The maximum quantum yield of photosystem II (ΦPSII) increased during the heatwave, allowing the plants to maintain their photosynthetic activity at control level. Negative effects on the photosynthetic performance and leaf biomass of C. nodosa were observed during the recovery period. No significant oxidative stress was observed throughout the experiment. Overall, although C. nodosa showed a relative tolerance to MHWs compared to other species, its population in Ria Formosa is likely to be negatively affected by the forecasted climate change scenarios.

Identifiants

pubmed: 35562537
doi: 10.1038/s41598-022-12102-x
pii: 10.1038/s41598-022-12102-x
pmc: PMC9106744
doi:

Substances chimiques

Photosystem II Protein Complex 0

Types de publication

Journal Article Research Support, Non-U.S. Gov't

Langues

eng

Sous-ensembles de citation

IM

Pagination

7950

Informations de copyright

© 2022. The Author(s).

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Auteurs

Alizé Deguette (A)

Centre of Marine Sciences, University of Algarve, Campus of Gambelas, 8005-139, Faro, Portugal.

Isabel Barrote (I)

Centre of Marine Sciences, University of Algarve, Campus of Gambelas, 8005-139, Faro, Portugal.
Faculty of Science and Technology, University of Algarve, Campus of Gambelas, 8005-139, Faro, Portugal.

João Silva (J)

Centre of Marine Sciences, University of Algarve, Campus of Gambelas, 8005-139, Faro, Portugal. jmsilva@ualg.pt.

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Classifications MeSH