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Pazzaglia J, Badalamenti F, Bernardeau-Esteller J, et al. Thermo-priming increases heat-stress tolerance in seedlings of the Mediterranean seagrass P. oceanica. Mar Pollut Bull. 2021;174:113164doi: 10.1016/j.marpolbul.2021.113164.
Pazzaglia, J., Badalamenti, F., Bernardeau-Esteller, J., Ruiz, J. M., Giacalone, V. M., Procaccini, G., & Marín-Guirao, L. (2021). Thermo-priming increases heat-stress tolerance in seedlings of the Mediterranean seagrass P. oceanica. Marine pollution bulletin, 174113164. https://doi.org/10.1016/j.marpolbul.2021.113164
Pazzaglia, Jessica, et al. "Thermo-priming increases heat-stress tolerance in seedlings of the Mediterranean seagrass P. oceanica." Marine pollution bulletin vol. 174 (2021): 113164. doi: https://doi.org/10.1016/j.marpolbul.2021.113164
Pazzaglia J, Badalamenti F, Bernardeau-Esteller J, Ruiz JM, Giacalone VM, Procaccini G, Marín-Guirao L. Thermo-priming increases heat-stress tolerance in seedlings of the Mediterranean seagrass P. oceanica. Mar Pollut Bull. 2021 Dec 02;174:113164. doi: 10.1016/j.marpolbul.2021.113164. Epub 2021 Dec 02. PMID: 34864463.
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Mar Pollut Bull. 2021 Dec 02;174:113164. doi: 10.1016/j.marpolbul.2021.113164. Epub 2021 Dec 02.

Thermo-priming increases heat-stress tolerance in seedlings of the Mediterranean seagrass P. oceanica.

Marine pollution bulletin

Jessica Pazzaglia, Fabio Badalamenti, Jaime Bernardeau-Esteller, Juan M Ruiz, Vincenzo Maximiliano Giacalone, Gabriele Procaccini, Lazaro Marín-Guirao

Affiliations

  1. Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, 80121 Naples, Italy; Department of Life Sciences, University of Trieste, 34127 Trieste, Italy.
  2. Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, 80121 Naples, Italy; CNR-IAS, Lungomare Cristoforo Colombo 4521, 90149 Palermo, Italy.
  3. Seagrass Ecology Group, Oceanographic Center of Murcia, Spanish Institute of Oceanography, Murcia, Spain.
  4. CNR-IAS, Via del Mare 3, 91021 Torretta Granitola, Italy.
  5. Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, 80121 Naples, Italy. Electronic address: [email protected].
  6. Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, 80121 Naples, Italy; Seagrass Ecology Group, Oceanographic Center of Murcia, Spanish Institute of Oceanography, Murcia, Spain.

PMID: 34864463 DOI: 10.1016/j.marpolbul.2021.113164

Abstract

Seawater warming and increased incidence of marine heatwaves (MHW) are threatening the integrity of coastal marine habitats including seagrasses, which are particularly vulnerable to climate changes. Novel stress tolerance-enhancing strategies, including thermo-priming, have been extensively applied in terrestrial plants for enhancing resilience capacity under the re-occurrence of a stress event. We applied, for the first time in seedlings of the Mediterranean seagrass Posidonia oceanica, a thermo-priming treatment through the exposure to a simulated warming event. We analyzed the photo-physiological and growth performance of primed and non-primed seedlings, and the gene expression responses of selected genes (i.e. stress-, photosynthesis- and epigenetic-related genes). Results revealed that during the re-occurring stress event, primed seedlings performed better than unprimed showing unaltered photo-physiology supported by high expression levels of genes related to stress response, photosynthesis, and epigenetic modifications. These findings offer new opportunities to improve conservation and restoration efforts in a future scenario of environmental changes.

Copyright © 2021 Elsevier Ltd. All rights reserved.

Keywords: Epigenetics; Gene expression; Photosynthesis; Priming; Respiration; Seagrass; Seedling

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