Roots drive oligogalacturonide-induced systemic immunity intomato
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comunitat-uji-handle2:10234/2508
comunitat-uji-handle3:10234/6999
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INVESTIGACIONMetadades
Títol
Roots drive oligogalacturonide-induced systemic immunity intomatoAutoria
Data de publicació
2020-12ISSN
0140-7791Cita bibliogràfica
GAMIR, Jordi, et al. Roots drive oligogalacturonide‐induced systemic immunity in tomato. Plant, Cell & Environment, 2021, vol. 44, no 1, p. 275-289.Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
https://onlinelibrary.wiley.com/doi/full/10.1111/pce.13917Versió
info:eu-repo/semantics/publishedVersionParaules clau / Matèries
Resum
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. [-]
Publicat a
Plant, cell and environment, 2021, Vol. 44Entitat finançadora
Consejo Superior de Investigaciones Científicas
Codi del projecte o subvenció
201840E130
Drets d'accés
info:eu-repo/semantics/openAccess
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