Free Fatty Acids and Methyl Jasmonate Trigger Defense Reactions in Laminaria digitata

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2009
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Küpper, Frithjof C.
Gaquerel, Emmanuel
Cosse, Audrey
Adas, Fadi
Peters, Akira F.
Kloareg, Bernard
Salaün, Jean-Pierre
Potin, Philippe
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Plant and Cell Physiology. 2009, 50(4), pp. 789-800. ISSN 0032-0781. eISSN 1471-9053. Available under: doi: 10.1093/pcp/pcp023
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Arachidonic acid, linolenic acid and methyl jasmonate (MeJA) were found to be strong triggers of an oxidative burst in the kelp Laminaria digitata. These findings constitute the first report of an oxidative burst in an algal system induced by free fatty acids. The source of reactive oxygen species can be at least partially inhibited by diphenylene iodonium (DPI). Treatment with arachidonic acid increases the levels of a number of free fatty acids [including myristic (C14:0), linoleic (C18:2), linolenic (C18:3) and eicosapentaeneoic (C20:5) acids] and hydroxylated derivatives [such as 15-hydroxyeicosatetraenoic acid (15-HETE), 13-hydroxyoctadecatrienoic acid (13-HOTE) and 15-hydroxyeicosapentaenoic acid (15-HEPE)]. Similar to a previous report of the function of an alginate oligosaccharide-triggered oxidative burst in the establishment of resistance in L. digitata against infection by its brown algal endophyte Laminariocolax tomentosoides, C20:4- and MeJA-induced oxidative bursts seem to be involved in establishing the same protection in L. digitata. Altogether, this study supports the notion that lipid oxidation signaling plays a key role in defense induction in marine brown algae.

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ISO 690KÜPPER, Frithjof C., Emmanuel GAQUEREL, Audrey COSSE, Fadi ADAS, Akira F. PETERS, Dieter G. MÜLLER, Bernard KLOAREG, Jean-Pierre SALAÜN, Philippe POTIN, 2009. Free Fatty Acids and Methyl Jasmonate Trigger Defense Reactions in Laminaria digitata. In: Plant and Cell Physiology. 2009, 50(4), pp. 789-800. ISSN 0032-0781. eISSN 1471-9053. Available under: doi: 10.1093/pcp/pcp023
BibTex
@article{Kupper2009Fatty-32291,
  year={2009},
  doi={10.1093/pcp/pcp023},
  title={Free Fatty Acids and Methyl Jasmonate Trigger Defense Reactions in Laminaria digitata},
  number={4},
  volume={50},
  issn={0032-0781},
  journal={Plant and Cell Physiology},
  pages={789--800},
  author={Küpper, Frithjof C. and Gaquerel, Emmanuel and Cosse, Audrey and Adas, Fadi and Peters, Akira F. and Müller, Dieter G. and Kloareg, Bernard and Salaün, Jean-Pierre and Potin, Philippe}
}
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    <dcterms:abstract xml:lang="eng">Arachidonic acid, linolenic acid and methyl jasmonate (MeJA) were found to be strong triggers of an oxidative burst in the kelp Laminaria digitata. These findings constitute the first report of an oxidative burst in an algal system induced by free fatty acids. The source of reactive oxygen species can be at least partially inhibited by diphenylene iodonium (DPI). Treatment with arachidonic acid increases the levels of a number of free fatty acids [including myristic (C14:0), linoleic (C18:2), linolenic (C18:3) and eicosapentaeneoic (C20:5) acids] and hydroxylated derivatives [such as 15-hydroxyeicosatetraenoic acid (15-HETE), 13-hydroxyoctadecatrienoic acid (13-HOTE) and 15-hydroxyeicosapentaenoic acid (15-HEPE)]. Similar to a previous report of the function of an alginate oligosaccharide-triggered oxidative burst in the establishment of resistance in L. digitata against infection by its brown algal endophyte Laminariocolax tomentosoides, C20:4- and MeJA-induced oxidative bursts seem to be involved in establishing the same protection in L. digitata. Altogether, this study supports the notion that lipid oxidation signaling plays a key role in defense induction in marine brown algae.</dcterms:abstract>
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