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Título
Arabinoxylan-Oligosaccharides Act as Damage Associated Molecular Patterns in Plants Regulating Disease Resistance
Autor
Facultad/Centro
Área de conocimiento
Título de la revista
Frontiers in Plant Science
Cita Bibliográfica
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
Editorial
Frontiers Media
Fecha
2020
Resumen
[EN] Immune responses in plants can be triggered by damage/microbe-associated molecular
patterns (DAMPs/MAMPs) upon recognition by plant pattern recognition receptors
(PRRs). DAMPs are signaling molecules synthesized by plants or released from host
cellular structures (e.g., plant cell walls) upon pathogen infection or wounding. Despite the
hypothesized important role of plant cell wall-derived DAMPs in plant-pathogen
interactions, a very limited number of these DAMPs are well characterized. Recent work
demonstrated that pectin-enriched cell wall fractions extracted from the cell wall mutant
impaired in Arabidopsis Response Regulator 6 (arr6), that showed altered disease
resistance to several pathogens, triggered more intense immune responses than those
activated by similar cell wall fractions from wild-type plants. It was hypothesized that arr6
cell wall fractions could be differentially enriched in DAMPs. In this work, we describe the
characterization of the previous immune-active fractions of arr6 showing the highest
triggering capacities upon further fractionation by chromatographic means. These
analyses pointed to a role of pentose-based oligosaccharides triggering plant immune
responses. The characterization of several pentose-based oligosaccharide structures
revealed that b-1,4-xylooligosaccharides of specific degrees of polymerization and
carrying arabinose decorations are sensed as DAMPs by plants. Moreover, the
pentasaccharide 33-a-L-arabinofuranosyl-xylotetraose (XA3XX) was found as a highly
active DAMP structure triggering strong immune responses in Arabidopsis thaliana and
enhancing crop disease resistance.
Materia
Palabras clave
Peer review
SI
ID proyecto
- info:eu-repo/grantAgreement/MINECO/ Programa Estatal de I+D+I Orientada a los Retos de la Sociedad/ BIO2015-64077-R/ES/ RESPUESTAS DE INMUNIDAD REGULADAS POR EL SISTEMA DE PERCEPCION DE INTEGRIDAD DE LA PARED CELULAR VEGETAL
- info:eu-repo/grantAgreement/AEI/ Programa Estatal de I+D+i Orientada a los Retos de la Sociedad/ RTI2018-096975-B-I00/ES/ RESPUESTAS DE INMUNIDAD VEGETAL REGULADAS POR PATRONES MOLECULARES ASOCIADOS A DAÑO: DEL RECONOCIMIENTO DE DAMPS (DAMAGE-ASSOCIATED MOLECULAR PATTERNS) A LA RESISTENCIA
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