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Article Dans Une Revue Biomolecules Année : 2023

LAM2: An Unusual Laminaran Structure for a Novel Plant Elicitor Candidate

Résumé

Laminarans are of interest because they have been shown to induce various immune responses in animals and plants. These β-D-glucans differ from each other by their branching rate, which is possibly responsible for their biological activities. In the present study, we characterized a laminaran fraction extracted from Laminaria hyperborea and named LAM2 using sugar composition and structural analyses (NMR). Then, we evaluated its activity as a potential plant elicitor in vitro on tomato seedlings using gene expression analysis and cell wall immunofluorescence labeling. Our study showed that LAM2 isolated from L. hyperborea is a succinylated laminaran which significantly enhanced the plant defense of tomato seedlings and induced cell wall modifications, suggesting a higher elicitor activity than the laminaran standard extracted from Laminaria digitata.
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Dates et versions

hal-04231131 , version 1 (06-10-2023)

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Cathleen Mirande-Ney, Quentin Arnaudin, Gaëlle Durambur, Carole Plasson, Sophie Bernard, et al.. LAM2: An Unusual Laminaran Structure for a Novel Plant Elicitor Candidate. Biomolecules, 2023, 13 (10), pp.1483. ⟨10.3390/biom13101483⟩. ⟨hal-04231131⟩
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