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

Jorge, T. F., Ramalho, J. C., Alseekh, S., Pais, I. P., Leitão, A. E., Rodrigues, A. P., et al. (2021). Will Casuarina glauca Stress Resilience Be Maintained in the Face of Climate Change? Metabolites, 11(9): 593. doi:10.3390/metabo11090593.

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 Creators:
Jorge, Tiago F.1, Author
Ramalho, José C.1, Author
Alseekh, S.2, Author           
Pais, Isabel P.1, Author
Leitão, António E.1, Author
Rodrigues, Ana P.1, Author
Scotti-Campos, Paula1, Author
Ribeiro-Barros, Ana I.1, Author
Fernie, A. R.3, Author           
António, Carla1, Author
Affiliations:
1External Organizations, ou_persistent22              
2The Genetics of Crop Metabolism, Department Willmitzer, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_3244836              
3Central Metabolism, Department Willmitzer, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753339              

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 Abstract: 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.

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Language(s): eng - English
 Dates: 2021
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.3390/metabo11090593
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Title: Metabolites
Source Genre: Journal
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Publ. Info: MDPI AG
Pages: - Volume / Issue: 11 (9) Sequence Number: 593 Start / End Page: - Identifier: Other: 2218-1989
CoNE: https://pure.mpg.de/cone/journals/resource/2218-1989