Regulation of carbon metabolism in two maize sister lines contrasted for chilling tolerance
DURAN GARZON, Catalina
BioEcoAgro BIOPI-UPJV
BioEcoAgro - Equipe 1 - Functioning and adaptation of the plant in interaction with its environment
BioEcoAgro BIOPI-UPJV
BioEcoAgro - Equipe 1 - Functioning and adaptation of the plant in interaction with its environment
LEQUART-PILLON, Michelle
BioEcoAgro BIOPI-UPJV
BioEcoAgro - Equipe 1 - Functioning and adaptation of the plant in interaction with its environment
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BioEcoAgro BIOPI-UPJV
BioEcoAgro - Equipe 1 - Functioning and adaptation of the plant in interaction with its environment
DURAN GARZON, Catalina
BioEcoAgro BIOPI-UPJV
BioEcoAgro - Equipe 1 - Functioning and adaptation of the plant in interaction with its environment
BioEcoAgro BIOPI-UPJV
BioEcoAgro - Equipe 1 - Functioning and adaptation of the plant in interaction with its environment
LEQUART-PILLON, Michelle
BioEcoAgro BIOPI-UPJV
BioEcoAgro - Equipe 1 - Functioning and adaptation of the plant in interaction with its environment
BioEcoAgro BIOPI-UPJV
BioEcoAgro - Equipe 1 - Functioning and adaptation of the plant in interaction with its environment
BASSARD, Solène
BioEcoAgro BIOPI-UPJV
BioEcoAgro - Equipe 1 - Functioning and adaptation of the plant in interaction with its environment
BioEcoAgro BIOPI-UPJV
BioEcoAgro - Equipe 1 - Functioning and adaptation of the plant in interaction with its environment
SELLIER-RICHARD, Hélène
Unité Expérimentale Grandes Cultures Innovation Environnement - Picardie [GCIE]
Unité Expérimentale Grandes Cultures Innovation Environnement - Picardie [GCIE]
DOMON, Jean-Marc
BioEcoAgro BIOPI-UPJV
BioEcoAgro - Equipe 1 - Functioning and adaptation of the plant in interaction with its environment
BioEcoAgro BIOPI-UPJV
BioEcoAgro - Equipe 1 - Functioning and adaptation of the plant in interaction with its environment
RAYON, Catherine
BioEcoAgro BIOPI-UPJV
BioEcoAgro - Equipe 1 - Functioning and adaptation of the plant in interaction with its environment
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BioEcoAgro BIOPI-UPJV
BioEcoAgro - Equipe 1 - Functioning and adaptation of the plant in interaction with its environment
Langue
en
Article de revue
Ce document a été publié dans
Journal of Experimental Botany. 2020, vol. 71, n° 1, p. 356-369
Oxford University Press (OUP)
Résumé en anglais
Maize can grow in cool temperate climates but is often exposed to spring chilling temperatures that can affect early seedling growth. Here, we used two sister double-haploid lines displaying a contrasted tolerance to ...Lire la suite >
Maize can grow in cool temperate climates but is often exposed to spring chilling temperatures that can affect early seedling growth. Here, we used two sister double-haploid lines displaying a contrasted tolerance to chilling to identify major determinants of long-term chilling tolerance. The chilling-sensitive (CS) and the chilling-tolerant (CT) lines were grown at 14°C day/10°C night for 60 days. CS displayed a strong reduction in growth and aerial biomass compared to CT. Photosynthesis efficiency was affected with an increase in energy dissipation in both lines. Chilling tolerance in CT was associated with higher chlorophyll content, glucose-6-phosphate dehydrogenase activity and sucrose-to-starch ratio. Few changes in cell wall composition were observed in both genotypes. There was no obvious correlation between nucleotide sugar content and cell wall polysaccharide composition. Our findings suggest that the central starch-sucrose metabolism is one major determinant of the response to low temperature, and its modulation accounts for the ability of chilling-tolerant plants to cope with low temperature. This modulation seemed to be linked to a strong alteration in the biosynthesis of nucleotide sugars which at a high level, could reflect the remobilization of carbon in response to chilling.< Réduire
Mots clés en anglais
Cell wall
Chilling
Maize
NDP sugars
Non-structural sugars
Photosynthesis
Project ANR
Développement d'une infrastructure française distribuée pour la métabolomique dédiée à l'innovation
Centre français de phénomique végétale
Centre français de phénomique végétale
Origine
Importé de halUnités de recherche