DE LA PEÑA, Marlon; VEGA-MAS, Izargi; GLAUSER, Gaëtan; GIBON, Yves; MARINO, Daniel; GONZÁLEZ-MORO, María Begoña

doi:10.1016/j.plantsci.2025.112684

Métadonnées

Licence d’utilisation du document

http://creativecommons.org/licenses/by-nc/

DE LA PEÑA, Marlon
Universidad del País Vasco [Espainia] / Euskal Herriko Unibertsitatea [España] = University of the Basque Country [Spain] = Université du pays basque [Espagne] [UPV / EHU]

VEGA-MAS, Izargi
Universidad del País Vasco [Espainia] / Euskal Herriko Unibertsitatea [España] = University of the Basque Country [Spain] = Université du pays basque [Espagne] [UPV / EHU]

GLAUSER, Gaëtan
Université de Neuchâtel = University of Neuchatel [UNINE]

Langue

Article de revue

Ce document a été publié dans

Plant Science. 2025-11, vol. 360, p. 112684

Elsevier

Résumé en anglais

Nitrogen (N) use efficiency (NUE) in crops is a critical challenge, as only 40 % of applied nitrogen is typically recovered at harvest. Ammonium-based nutrition is proposed as a strategy to increase NUE in agrosystems. However, crops display better performance when growing with a nitrate-based nutrition. To advance in the current understanding of the interspecific variability to ammonium nutrition, we investigated the performance of the three annual species of Brachypodium genus: B. distachyon, B. stacei, and B. hybridum, focusing on their differential responses to ammonium and nitrate nutrition. B. stacei appeared as a tolerant species, with equal growth regardless of the N source, and B. distachyon as the most sensitive, while B. hybridum showed an intermediate phenotype. Metabolomic analysis highlighted critical differences in N metabolism, where B. stacei and B. hybridum exhibited more robust N assimilation in terms of protein content. In addition, several metabolic pathways were found associated with ammonium nutrition. Notably, flavonoid biosynthesis and tricarboxylic acid cycle pathways together with ethylene precursors and iron homeostasis-related compounds contributed to explain species-specific responses to ammonium nutrition. Altogether, these findings pinpoint potential strategies for improving N utilization and ammonium stress tolerance in cereals.< Réduire

Mots clés en anglais

Ammonium

Brachypodium

Metabolomics

Natural variation

Nitrate

Nitrogen metabolism

Nutritional stress

DOI

http://dx.doi.org/10.1016/j.plantsci.2025.112684

Project ANR

Centre français de phénomique végétale - ANR-11-INBS-0012

Origine

Importé de hal

Unités de recherche

Biologie du Fruit & Pathologie (BFP) - UMR 1332