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dc.contributor.authorPérez-Bueno, María L.
dc.contributor.authorGranum, Espen
dc.contributor.authorPineda, Mónica
dc.contributor.authorFlors, Victor
dc.contributor.authorRodríguez-Palenzuela, Pablo
dc.contributor.authorLópez-Solanilla, Emilia
dc.contributor.authorBarón, Matilde
dc.date.accessioned2016-06-13T09:10:48Z
dc.date.available2016-06-13T09:10:48Z
dc.date.issued2016-01-08
dc.identifier.citationPÉREZ-BUENO, María L., et al. Temporal and spatial resolution of activated plant defense responses in leaves of Nicotiana benthamiana infected with Dickeya dadantii. Frontiers in plant science, 2015, vol. 6ca_CA
dc.identifier.issn1664-462X
dc.identifier.urihttp://hdl.handle.net/10234/160638
dc.description.abstractThe necrotrophic bacteria Dickeya dadantii is the causal agent of soft-rot disease in a broad range of hosts. The model plant Nicotiana benthamiana, commonly used as experimental host for a very broad range of plant pathogens, is susceptible to infection by D. dadantii. The inoculation with D. dadantii at high dose seems to overcome the plant defense capacity, inducing maceration and death of the tissue, although restricted to the infiltrated area. By contrast, the output of the defense response to low dose inoculation is inhibition of maceration and limitation in the growth, or even eradication, of bacteria. Responses of tissue invaded by bacteria (neighboring the infiltrated areas after 2–3 days post-inoculation) included: (i) inhibition of photosynthesis in terms of photosystem II efficiency; (ii) activation of energy dissipation as non-photochemical quenching in photosystem II, which is related to the activation of plant defense mechanisms; and (iii) accumulation of secondary metabolites in cell walls of the epidermis (lignins) and the apoplast of the mesophyll (phytoalexins). Infiltrated tissues showed an increase in the content of the main hormones regulating stress responses, including abscisic acid, jasmonic acid, and salicylic acid. We propose a mechanism involving the three hormones by which N. benthamiana could activate an efficient defense response against D. dadantii.ca_CA
dc.description.sponsorShipThis work was supported by FEDER Funds, RECUPERA 2020 [grant number 20134R060 to MB]; Junta de Andalucía [grant number P12-AGR370 to MB]; and Ministerio de Economía y Competitividad [grant number AGL2012-32516 to EL-S]. EG and MP-B were recipient of a JAE-Doc contract funded by CSIC.ca_CA
dc.format.extent13 p.ca_CA
dc.format.mimetypeapplication/pdfca_CA
dc.language.isoengca_CA
dc.publisherFrontiers Mediaca_CA
dc.relation.isPartOfFrontiers in plant science, 2015, vol. 6ca_CA
dc.rightsCopyright © 2016 Pérez-Bueno, Granum, Pineda, Flors, Rodriguez-Palenzuela, López-Solanilla and Barón. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. This Document is Protected by copyright and was first published by Frontiers. All rights reserved. it is reproduced with permission.ca_CA
dc.subjectDickeya dadantiica_CA
dc.subjectnecrotrophca_CA
dc.subjectplant resistanceca_CA
dc.subjectchlorophyll fluorescence imagingca_CA
dc.subjectmulticolor fluorescence imagingca_CA
dc.subjectthermal imagingca_CA
dc.titleTemporal and Spatial Resolution of Activated Plant Defense Responses in Leaves of Nicotiana benthamiana Infected with Dickeya dadantiica_CA
dc.typeinfo:eu-repo/semantics/articleca_CA
dc.identifier.doihttp://dx.doi.org/10.3389/fpls.2015.01209
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessca_CA
dc.relation.publisherVersionhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC4705309/ca_CA


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