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Article

Will Casuarina glauca Stress Resilience Be Maintained in the Face of Climate Change?

1
Plant Metabolomics Laboratory, Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa (ITQB NOVA), Avenida da República, 2780-157 Oeiras, Portugal
2
Plant Stress & Biodiversity Lab, Centro de Estudos Florestais (CEF), Instituto Superior de Agronomia (ISA), Universidade de Lisboa (ULisboa), Tapada da Ajuda, 1349-017 Lisboa and Quinta do Marquês, Portugal
3
GeoBioSciences, GeoTechnologies and GeoEngineering (GeoBioTec), Faculdade de Ciências e Tecnologia (FCT), Universidade NOVA de Lisboa (UNL), 2829-516 Monte de Caparica, Portugal
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Central Metabolism Group, Max Planck Institute of Molecular Plant Physiology, 14476 Potsdam-Golm, Germany
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Center of Plant Systems Biology and Biotechnology, 4000 Plovdiv, Bulgaria
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Unidade de Investigação em Biotecnologia e Recursos Genéticos, Instituto Nacional de Investigação Agrária e Veterinária, I.P. (INIAV), 2784-505 Oeiras, Portugal
*
Author to whom correspondence should be addressed.
Current address: Plant Metabolomics Lab Portugal, Centro de Estudos Florestais (CEF), Instituto Superior de Agronomia (ISA), Universidade de Lisboa (ULisboa), Tapada da Ajuda, 1349-017 Lisboa, Portugal.
Academic Editor: Gabriele Capodaglio
Metabolites 2021, 11(9), 593; https://doi.org/10.3390/metabo11090593
Received: 10 August 2021 / Revised: 30 August 2021 / Accepted: 31 August 2021 / Published: 2 September 2021
Actinorhizal plants have been regarded as promising species in the current climate change context due to their high tolerance to a multitude of abiotic stresses. While combined salt-heat stress effects have been studied in crop species, their impact on the model actinorhizal plant, Casuarina glauca, has not yet been fully addressed. The effect of single salt (400 mM NaCl) and heat (control at 26/22 °C, supra optimal temperatures at 35/22 °C and 45/22 °C day/night) conditions on C. glauca branchlets was characterised at the physiological level, and stress-induced metabolite changes were characterised by mass spectrometry-based metabolomics. C. glauca could withstand single salt and heat conditions. However, the harshest stress condition (400 mM NaCl, 45 °C) revealed photosynthetic impairments due to mesophyll and membrane permeability limitations as well as major stress-specific differential responses in C and N metabolism. The increased activity of enzymatic ROS scavengers was, however, revealed to be sufficient to control the plant oxidative status. Although C. glauca could tolerate single salt and heat stresses, their negative interaction enhanced the effects of salt stress. Results demonstrated that C. glauca responses to combined salt-heat stress could be explained as a sum of the responses from each single applied stress. View Full-Text
Keywords: actinorhizal plants; Casuarina glauca; combined stress; heat stress; metabolomics; salt stress actinorhizal plants; Casuarina glauca; combined stress; heat stress; metabolomics; salt stress
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MDPI and ACS Style

Jorge, T.F.; Ramalho, J.C.; Alseekh, S.; Pais, I.P.; Leitão, A.E.; Rodrigues, A.P.; Scotti-Campos, P.; Ribeiro-Barros, A.I.; Fernie, A.R.; António, C. Will Casuarina glauca Stress Resilience Be Maintained in the Face of Climate Change? Metabolites 2021, 11, 593. https://doi.org/10.3390/metabo11090593

AMA Style

Jorge TF, Ramalho JC, Alseekh S, Pais IP, Leitão AE, Rodrigues AP, Scotti-Campos P, Ribeiro-Barros AI, Fernie AR, António C. Will Casuarina glauca Stress Resilience Be Maintained in the Face of Climate Change? Metabolites. 2021; 11(9):593. https://doi.org/10.3390/metabo11090593

Chicago/Turabian Style

Jorge, Tiago F., José C. Ramalho, Saleh Alseekh, Isabel P. Pais, António E. Leitão, Ana P. Rodrigues, Paula Scotti-Campos, Ana I. Ribeiro-Barros, Alisdair R. Fernie, and Carla António. 2021. "Will Casuarina glauca Stress Resilience Be Maintained in the Face of Climate Change?" Metabolites 11, no. 9: 593. https://doi.org/10.3390/metabo11090593

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