title: Osmotic stress alters the balance between organic and inorganic solutes in flax (Linum usitatissimum).
abstract: Flax (Linum usitatissimum) is grown for its oil and its fiber. This crop, cultivated in temperate regions, has seen a renewed interest due to the presence of abundant molecules of interest for many applications. Little information is available about the behavior of flax during osmotic stress; yet this is considered a major stress that causes significant yield losses in most crops. To control the presence of this stress better, flax behavior was investigated following the application of osmotic stress and the response was examined by applying increasing concentrations of PEG 8000. This resulted in the reorganization of 32 metabolites and 6 mineral ions in the leaves. The analysis of these two types of solute highlighted the contrasting behavior between a higher metabolite content (particularly fructose, glucose and proline) and a decrease in mineral ions (especially nitrate and potassium) following PEG treatment. However, this reorganization did not lead to a greater accumulation of solutes, with the total amount remaining unchanged in leaves during osmotic stress.
authors.affiliation: Université de Picardie Jules Verne, EA 3900-BioPI Biologie des Plantes et Innovation, IUT d'Amiens, Département Génie Biologique, Avenue des Facultés, Le Bailly et Faculté de Pharmacie, 1, rue des Louvels, 80025 Amiens cedex, France.
authors.forename: Anthony
authors.initials: A
authors.lastname: Quéro
authors.forename: Roland
authors.initials: R
authors.lastname: Molinié
authors.forename: Redouan
authors.initials: R
authors.lastname: Elboutachfaiti
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Petit
authors.forename: Corinne
authors.initials: C
authors.lastname: Pau-Roblot
authors.forename: Xavier
authors.initials: X
authors.lastname: Guillot
authors.forename: François
authors.initials: F
authors.lastname: Mesnard
authors.forename: Josiane
authors.initials: J
authors.lastname: Courtois
mesh_terms: D019597:Flax / Q000737:chemistry / Q000502:physiology*; D008401:Gas Chromatography-Mass Spectrometry; D055432:Metabolomics; D009997:Osmotic Pressure; D010802:Phylogeny; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry / Q000502:physiology; D017422:Sequence Analysis, DNA
chemical_list: D010936:Plant Extracts
keywords: Flax; GC–MS; Inorganic solutes; Metabolite profiling; Osmotic stress