RT info:eu-repo/semantics/article
T1 Arabinoxylan-Oligosaccharides Act as Damage Associated Molecular Patterns in Plants Regulating Disease Resistance
A1 Mélida Martínez, Hugo
A1 Bacete, Laura
A1 Ruprecht, Colin
A1 Rebaque, Diego
A1 Hierro, Irene del
A1 López, Gemma
A1 Brunner, Frèderic
A1 Pfrengle, Fabian
A1 Molina, Antonio
A2 Fisiologia Vegetal
K1 Ingeniería agrícola
K1 Arabinoxylan
K1 Cell Wall
K1 Damage-associated Molecular Pattern (damp)
K1 Plant Immunity
K1 Pattern Triggered Immunity
K1 3102 Ingeniería Agrícola
K1 2417.19 Fisiología Vegetal
AB [EN] Immune responses in plants can be triggered by damage/microbe-associated molecularpatterns (DAMPs/MAMPs) upon recognition by plant pattern recognition receptors(PRRs). DAMPs are signaling molecules synthesized by plants or released from hostcellular structures (e.g., plant cell walls) upon pathogen infection or wounding. Despite thehypothesized important role of plant cell wall-derived DAMPs in plant-pathogeninteractions, a very limited number of these DAMPs are well characterized. Recent workdemonstrated that pectin-enriched cell wall fractions extracted from the cell wall mutantimpaired in Arabidopsis Response Regulator 6 (arr6), that showed altered diseaseresistance to several pathogens, triggered more intense immune responses than thoseactivated by similar cell wall fractions from wild-type plants. It was hypothesized that arr6cell wall fractions could be differentially enriched in DAMPs. In this work, we describe thecharacterization of the previous immune-active fractions of arr6 showing the highesttriggering capacities upon further fractionation by chromatographic means. Theseanalyses pointed to a role of pentose-based oligosaccharides triggering plant immuneresponses. The characterization of several pentose-based oligosaccharide structuresrevealed that b-1,4-xylooligosaccharides of specific degrees of polymerization andcarrying arabinose decorations are sensed as DAMPs by plants. Moreover, thepentasaccharide 33-a-L-arabinofuranosyl-xylotetraose (XA3XX) was found as a highlyactive DAMP structure triggering strong immune responses in Arabidopsis thaliana andenhancing crop disease resistance.
PB Frontiers Media
LK https://hdl.handle.net/10612/20762
UL https://hdl.handle.net/10612/20762
NO Mélida, H., Bacete, L., Ruprecht, C., Rebaque, D., del Hierro, I., López, G., Brunner, F., Pfrengle, F., & Molina, A. (2020). Arabinoxylan-Oligosaccharides Act as Damage Associated Molecular Patterns in Plants Regulating Disease Resistance. Frontiers in Plant Science, 11. https://doi.org/10.3389/FPLS.2020.01210
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 29-jun-2024