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  Cytochrome respiration pathway and sulphur metabolism sustain stress tolerance to low temperature in the Antarctic species Colobanthus quitensis

Clemente-Moreno, J. M., Omranian, N., Sáez, P., Figueroa, C. M., Del-Saz, N., Elso, M., et al. (2019). Cytochrome respiration pathway and sulphur metabolism sustain stress tolerance to low temperature in the Antarctic species Colobanthus quitensis. New Phytologist, 225(2), 754-768. doi:10.1111/nph.16167.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-3F08-D Version Permalink: http://hdl.handle.net/21.11116/0000-0005-6CA7-6
Genre: Journal Article

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Clemente-Moreno, José María1, Author
Omranian, N.2, Author              
Sáez, Patricia1, Author
Figueroa, Carlos María1, Author
Del-Saz, Néstor1, Author
Elso, Mhartyn1, Author
Poblete, Leticia1, Author
Orf, Isabel1, Author
Cuadros-Inostroza, Alvaro1, Author
Cavieres, Lohengrin1, Author
Bravo, León1, Author
Fernie, A. R.3, Author              
Ribas-Carbó, Miquel1, Author
Flexas, Jaume1, Author
Nikoloski, Z.2, Author              
Brotman, Yariv1, Author
Gago, Jorge1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Mathematical Modelling and Systems Biology - Nikoloski, Cooperative Research Groups, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753310              
3Central Metabolism, Department Willmitzer, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753339              

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Free keywords: Stress tolerance, Antarctica, antioxidant capacity, respiration, low temperature, photosynthesis, sulphur metabolism
 Abstract: Abstract -Understanding the strategies employed by plant species that live in extreme environments offers the possibility to discover stress tolerance mechanisms. We studied the physiological, antioxidant and metabolic responses to three temperature conditions (4, 15 and 23ºC) of Colobanthus quitensis (CQ), one of the only two native vascular species in Antarctica. We also employed Dianthus chinensis (DC), to asssess the effects of the treatments in a non-antarctic species from the same family. -Using fused LASSO modeling we associated physiological and biochemical antioxidant responses with primary metabolism. This approach allowed us to highlight the metabolic pathways driving the response specific to CQ. -Low temperature imposed dramatic reductions in photosynthesis (up to 88%) but not in respiration (sustaining rates of 3.0-4.2 µmol CO2 m-2 s-1) in CQ, and any change in the physiological stress parameters was found. Its notable antioxidant capacity and mitochondrial cytochrome respiratory activity (20 and 2 times higher than DC, respectively) which ensure ATP production even at low temperature, was significantly associated to sulphur-containing metabolites and polyamines. -Our findings potentially open new biotechnological opportunities regarding the role of antioxidant compounds and respiratory mechanisms associated to sulphur metabolism in stress tolerance strategies to low temperature. This article is protected by copyright. All rights reserved.

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Language(s): eng - English
 Dates: 2019
 Publication Status: Published online
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 Rev. Method: -
 Identifiers: DOI: 10.1111/nph.16167
BibTex Citekey: doi:10.1111/nph.16167
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Title: New Phytologist
  Other : New Phytol.
Source Genre: Journal
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Publ. Info: London : Academic Press.
Pages: - Volume / Issue: 225 (2) Sequence Number: - Start / End Page: 754 - 768 Identifier: ISSN: 0028-646X
CoNE: https://pure.mpg.de/cone/journals/resource/954925334695