Nutrient availability regulates Deschampsia antarctica photosynthetic and stress tolerance performance in Antarctica
| Primer Autor |
Gago, Jorge
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| Co-autores |
Nadal, Miquel
Clemente-Moreno, Maria Jose
Figueroa, Carlos Maria
Medeiros, David Barbosa
Cubo-Ribas, Neus
Cavieres, Lohengrin Alexis
Gulias, Javier
Fernie, Alisdair Robert
Flexas, Jaume
Bravo, Leon Aloys
|
| Título |
Nutrient availability regulates Deschampsia antarctica photosynthetic and stress tolerance performance in Antarctica
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| Editorial |
OXFORD UNIV PRESS
|
| Revista |
JOURNAL OF EXPERIMENTAL BOTANY
|
| Lenguaje |
en
|
| Resumen |
Deschampsia antarctica is one of the only two native vascular plants in Antarctica, mostly located in the ice-free areas of the Peninsula's coast and adjacent islands. This region is characterized by a short growing season, frequent extreme climatic events, and soils with reduced nutrient availability. However, it is unknown whether its photosynthetic and stress tolerance mechanisms are affected by the availability of nutrients to deal with this particular environment. We studied the photosynthetic, primary metabolic, and stress tolerance performance of D. antarctica plants growing on three close sites (< 500 m) with contrasting soil nutrient conditions. Plants from all sites showed similar photosynthetic rates, but mesophyll conductance and photobiochemistry were more limiting (similar to 25%) in plants growing on low-nutrient availability soils. Additionally, these plants showed higher stress levels and larger investments in photoprotection and carbon pools, most probably driven by the need to stabilize proteins and membranes, and remodel cell walls. In contrast, when nutrients were readily available, plants shifted their carbon investment towards amino acids related to osmoprotection, growth, antioxidants, and polyamines, leading to vigorous plants without appreciable levels of stress. Taken together, these findings demonstrate that D. antarctica displays differential physiological performances to cope with adverse conditions depending on resource availability, allowing it to maximize stress tolerance without jeopardizing photosynthetic capacity.
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| Fecha Publicación |
2023
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| Tipo de Recurso |
artículo original
|
| doi |
10.1093/jxb/erad043
|
| Formato Recurso |
PDF
|
| Palabras Claves |
Mesophyll conductance
nutrient mobilization
photobiochemistry
photosynthetic limitations
polyamines
primary metabolism
stomatal conductance
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| Ubicación del archivo | |
| Categoría OCDE |
Ciencias de las plantas
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| Materias |
conductancia del mesófilo
movilización de nutrientes
fotobioquímica
limitaciones fotosintéticas
poliaminas
metabolismo primario
conductancia estomática
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| Página de inicio (Recomendado-único) |
2620.0
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| Página final (Recomendado-único) |
2637
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| Identificador del recurso (Mandatado-único) |
artículo original
|
| Versión del recurso (Recomendado-único) |
versión publicada
|
| Derechos de acceso |
acceso abierto
|
| Access Rights |
acceso abierto
|
| Id de Web of Science |
WOS:000951242700001
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| ISSN |
0022-0957
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| Tipo de ruta |
verde# dorado
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| Categoría WOS |
Ciencias de las plantas
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| Referencia del Financiador (Mandatado si es aplicable-repetible) |
ERDF PGC2018-093824-B-C41
MICINN MCIN/AEI/10.13039/501100011033
ERDF PID2019-107434GA-I00
|
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