Quéro Anthony, Molinié Roland, Elboutachfaiti Redouan, Petit Emmanuel, Pau-Roblot Corinne, Guillot Xavier, Mesnard François, Courtois Josiane
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.
J Plant Physiol. 2014 Jan 1;171(1):55-64. doi: 10.1016/j.jplph.2013.07.006. Epub 2013 Aug 30.
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.
亚麻（Linum usitatissimum）因其油和纤维而被种植。这种在温带地区种植的作物，由于存在许多具有多种应用价值的丰富分子，重新引起了人们的关注。关于亚麻在渗透胁迫下的行为，目前所知甚少；然而，这被认为是一种主要胁迫，会导致大多数作物产量大幅损失。为了更好地控制这种胁迫的影响，研究了施加渗透胁迫后亚麻的行为，并通过施加浓度不断增加的聚乙二醇8000（PEG 8000）来检测其反应。这导致了叶片中32种代谢物和6种矿质离子的重新组织。对这两种溶质的分析突出了聚乙二醇处理后较高的代谢物含量（特别是果糖、葡萄糖和脯氨酸）与矿质离子减少（尤其是硝酸盐和钾）之间的对比行为。然而，这种重新组织并没有导致溶质积累增加，在渗透胁迫期间叶片中的总量保持不变。
