Roots drive oligogalacturonide-induced systemic immunity intomato
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comunitat-uji-handle3:10234/6999
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Título
Roots drive oligogalacturonide-induced systemic immunity intomatoAutoría
Fecha de publicación
2020-12ISSN
0140-7791Cita bibliográfica
GAMIR, Jordi, et al. Roots drive oligogalacturonide‐induced systemic immunity in tomato. Plant, Cell & Environment, 2021, vol. 44, no 1, p. 275-289.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://onlinelibrary.wiley.com/doi/full/10.1111/pce.13917Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
Oligogalacturonides (OGs) are fragments of pectin released from the plant cell wall during insect or pathogen attack. They can be perceived by the plant as damage signals, triggering local and systemic defence responses. ... [+]
Oligogalacturonides (OGs) are fragments of pectin released from the plant cell wall during insect or pathogen attack. They can be perceived by the plant as damage signals, triggering local and systemic defence responses. Here, we analyse the dynamics of local and
systemic responses to OG perception in tomato roots or shoots, exploring their impact
across the plant and their relevance in pathogen resistance. Targeted and untargeted
metabolomics and gene expression analysis in plants treated with purified OGs revealed
that local responses were transient, while distal responses were stronger and more
sustained. Remarkably, changes were more conspicuous in roots, even upon foliar application of the OGs. The treatments differentially activated the synthesis of defencerelated hormones and secondary metabolites including flavonoids, alkaloids and lignans,
some of them exclusively synthetized in roots. Finally, the biological relevance of the systemic defence responses activated upon OG perception was confirmed, as the treatment
induced systemic resistance to Botrytis cinerea. Overall, this study shows the differential
regulation of tomato defences upon OGs perception in roots and shoots and reveals the
key role of roots in the coordination of the plant responses to damage sensing. [-]
Publicado en
Plant, cell and environment, 2021, Vol. 44Entidad financiadora
Consejo Superior de Investigaciones Científicas
Código del proyecto o subvención
201840E130
Derechos de acceso
info:eu-repo/semantics/openAccess
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