WEDEKING, Rita; MAUCOURT, Mickael; DEBORDE, Catherine; MOING, Annick; GIBON, Yves; GOLDBACH, Heiner E; WIMMER, Monika A

doi:10.1371/journal.pone.0196102

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

WEDEKING, Rita
Rheinische Friedrich-Wilhelms-Universität Bonn

MAUCOURT, Mickael
Biologie du fruit et pathologie [BFP]

DEBORDE, Catherine
Biologie du fruit et pathologie [BFP]

Langue

Article de revue

Ce document a été publié dans

PLoS ONE. 2018, vol. 13, n° 5, p. e0196102

Public Library of Science

Résumé en anglais

Yield formation in regions with intermittent drought periods depends on the plant's ability to recover after cessation of the stress. The present work assessed differences in metabolic recovery of leaves and roots of drought-stressed sugar beets with high temporal resolution. Plants were subjected to drought for 13 days, and rewatered for 12 days. At one to two-day intervals, plant material was harvested for untargeted 1H-NMR metabolomic profiling, targeted analyses of hexose-phosphates, starch, amino acids, nitrate and proteins, and physiological measurements including relative water content, osmotic potential, electrolyte leakage and malondialdehyde concentrations. Drought triggered changes in primary metabolism, especially increases in amino acids in both organs, but leaves and roots responded with different dynamics to rewatering. After a transient normalization of most metabolites within 8 days, a second accumulation of amino acids in leaves might indicate a stress imprint beneficial in upcoming drought events. Repair mechanisms seemed important during initial recovery and occurred at the expense of growth for at least 12 days. These results indicate that organ specific metabolic recovery responses might be related to distinct functions and concomitant disparate stress levels in above- and belowground organs. With respect to metabolism, recovery was not simply a reversal of the stress responses.< Réduire

DOI

http://dx.doi.org/10.1371/journal.pone.0196102

Project ANR

Développement d'une infrastructure française distribuée pour la métabolomique dédiée à l'innovation - ANR-11-INBS-0010
Centre français de phénomique végétale - ANR-11-INBS-0012

Origine

Importé de hal

Unités de recherche

Biologie du Fruit & Pathologie (BFP) - UMR 1332