Osmotic stress alters the balance between organic and inorganic solutes in flax (Linum usitatissimum)

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 th...

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Published inJournal of plant physiology Vol. 171; no. 1; pp. 55 - 64
Main Authors Quéro, Anthony, Molinié, Roland, Elboutachfaiti, Redouan, Petit, Emmanuel, Pau-Roblot, Corinne, Guillot, Xavier, Mesnard, François, Courtois, Josiane
Format Journal Article
LanguageEnglish
Published Germany Elsevier GmbH 01.01.2014
Subjects
Crops
Flax
Flax - chemistry
Flax - physiology
Fructose
Gas Chromatography-Mass Spectrometry
GC–MS
Glucose
Inorganic solutes
Leaves
Metabolite profiling
Metabolites
Metabolomics
Minerals
Osmotic Pressure
Osmotic stress
Phylogeny
Plant Extracts - chemistry
Plant Extracts - isolation & purification
Plant Leaves - chemistry
Plant Leaves - physiology
Sequence Analysis, DNA
Stresses
Inorganic solutes
GC–MS
Flax
Metabolite profiling
Osmotic stress
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Summary: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.
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ISSN:0176-1617
1618-1328
DOI:10.1016/j.jplph.2013.07.006