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Insights into the mechanisms implicated in Pinus pinaster resistance to pinewood nematode

2021Artigo científico Acesso aberto
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dc.contributor.authorModesto, Inês
dc.contributor.authorSterck, Lieven
dc.contributor.authorArbona, Vicent
dc.contributor.authorGómez-Cadenas, Aurelio
dc.contributor.authorCarrasquinho, Isabel
dc.contributor.authorVan de Peer, Yves
dc.contributor.authorMiguel, Célia M.
dc.date.accessioned2021-12-10T11:07:24Z
dc.date.available2021-12-10T11:07:24Z
dc.date.issued2021
dc.descriptionOriginal Researchpt_PT
dc.description.abstractPine wilt disease (PWD), caused by the plant–parasitic nematode Bursaphelenchus xylophilus, has become a severe environmental problem in the Iberian Peninsula with devastating effects in Pinus pinaster forests. Despite the high levels of this species’ susceptibility, previous studies reported heritable resistance in P. pinaster trees. Understanding the basis of this resistance can be of extreme relevance for future programs aiming at reducing the disease impact on P. pinaster forests. In this study, we highlighted the mechanisms possibly involved in P. pinaster resistance to PWD, by comparing the transcriptional changes between resistant and susceptible plants after infection. Our analysis revealed a higher number of differentially expressed genes (DEGs) in resistant plants (1,916) when compared with susceptible plants (1,226). Resistance to PWN is mediated by the induction of the jasmonic acid (JA) defense pathway, secondary metabolism pathways, lignin synthesis, oxidative stress response genes, and resistance genes. Quantification of the acetyl bromide-soluble lignin confirmed a significant increase of cell wall lignification of stem tissues around the inoculation zone in resistant plants. In addition to less lignified cell walls, susceptibility to the pine wood nematode seems associated with the activation of the salicylic acid (SA) defense pathway at 72 hpi, as revealed by the higher SA levels in the tissues of susceptible plants. Cell wall reinforcement and hormone signaling mechanisms seem therefore essential for a resistance responsept_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationModesto I, Sterck L, Arbona V, Gómez-Cadenas A, Carrasquinho I, Van de Peer Y and Miguel CM (2021) Insights Into the Mechanisms Implicated in Pinus pinaster Resistance to Pinewood Nematode. Front. Plant Sci. 12:690857pt_PT
dc.identifier.doi10.3389/fpls.2021.690857pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.5/22687
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherFrontierspt_PT
dc.relationPTDC/BAA-MOL/28379/2017— LISBOA-01-0145-FEDER-028379pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectcell wall lignificationpt_PT
dc.subjectjasmonatept_PT
dc.subjectmaritime pinept_PT
dc.subjectpine wilt diseasept_PT
dc.subjectresistance genespt_PT
dc.subjectsecondary metabolismpt_PT
dc.subjecttranscriptomept_PT
dc.subjectBursaphelenchus xylophiluspt_PT
dc.titleInsights into the mechanisms implicated in Pinus pinaster resistance to pinewood nematodept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleFrontiers in Plant Sciencept_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT

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