β-Aminobutyric acid increases drought tolerance and reorganizes solute content and water homeostasis in flax (Linum usitatissimum)

β-Aminobutyric acid (BABA) is a non-protein amino acid that induces drought tolerance in plants. The mechanisms involved in this tolerance are still poorly understood. In the present study, metabolomic and ionomic profiling performed in flax ( Linum usitatissimum ) leaves revealed that BABA induces...

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Published in:Metabolomics 2015-10, Vol.11 (5), p.1363-1375
Main Authors: Quéro, Anthony, Fliniaux, Ophélie, Elboutachfaiti, Redouan, Petit, Emmanuel, Guillot, Xavier, Hawkins, Simon, Courtois, Josiane, Mesnard, François
Format: Article
Language:English
Subjects:
Biochemistry
Biomedical and Life Sciences
Biomedicine
Cell Biology
Developmental Biology
Life Sciences
Molecular Medicine
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Summary:β-Aminobutyric acid (BABA) is a non-protein amino acid that induces drought tolerance in plants. The mechanisms involved in this tolerance are still poorly understood. In the present study, metabolomic and ionomic profiling performed in flax ( Linum usitatissimum ) leaves revealed that BABA induces a major reorganization in solute content. This reorganization resulted in increased accumulation of non-structural carbohydrates and proline and a decrease in inorganic solutes. This response has high similarities with that obtained when flax is exposed to an osmotic stress. BABA treatment also induced a decrease in osmotic potential and a change in water status of flax leaves. These modifications are accompanied by an improvement in drought tolerance.
ISSN:1573-3882
1573-3890
DOI:10.1007/s11306-015-0792-9