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dc.contributor.authorMontero, R.-
dc.contributor.authorPérez-Bueno, María Luisa-
dc.contributor.authorBarón Ayala, Matilde-
dc.contributor.authorFlórez Sarasa, I. D.-
dc.contributor.authorTohge, Takayuki-
dc.contributor.authorFernie, Alisdair R.-
dc.contributor.authorEl Aououad, H.-
dc.contributor.authorFlexas, Jaume-
dc.contributor.authorBota, Josefina-
dc.identifierdoi: 10.1111/ppl.12440-
dc.identifierissn: 1399-3054-
dc.identifier.citationPhysiologia Plantarum 157: 442- 452 (2016)-
dc.description.abstractPlant defense mechanisms against pathogens result in differential regulation of various processes of primary and secondary metabolism. Imaging techniques, such as fluorescence imaging and thermography, are very valuable tools providing spatial and temporal information about these processes. In this study, effects of Grapevine leafroll-associated virus 3 (GLRaV-3) on grapevine physiology were analyzed in pot-grown asymptomatic plants of the white cultivar Malvasía de Banyalbufar. The virus triggered changes in the activity of photosynthesis and secondary metabolism. There was a decrease in the photorespiratory intermediates glycine and serine in infected plants, possibly as a defense response against the infection. The content of malate, which plays an important role in plant metabolism, also decreased. These results correlate with the increased non-photochemical quenching found in infected plants. On the other hand, the concentration of flavonols (represented by myricetin, kaempferol and quercetin derivatives) and hydroxycinnamic acids (which include derivatives of caffeic acid) increased following infection by the virus. These compounds could be responsible for the increase in multicolor fluorescence F440 (blue fluorescence) and F520 (green fluorescence) on the leaves, and changes in the fluorescence parameters F440/F680, F440/F740, F520/F680, F520/F740 and F680/F740. The combined analysis of chlorophyll fluorescence kinetics and blue-green fluorescence emitted by phenolics could constitute disease signatures allowing the discrimination between GLRaV-3 infected and non-infected plants at very early stage of infection, prior to the development of symptoms.-
dc.description.sponsorshipThis work has been developed with the financial support from National Institute of Agronomic research (INIA, RTA2010-00118-00-00), Conselleria de Educación, Cultura y Universidades (Govern de les Illes Balears) and the European Social Fund through the ESF Operational Programme for the Balearic Islands 2013–2017 (project PD/027/2013 to J. B.), RECUPERA 2020 (grant number 20134R060 to M. B.), Junta de Andalucía (grant number P12-AGR370 to M. B.) and FEDER Funds. R. M. was recipient of a predoctoral fellowship (FPI-INIA).-
dc.publisherBlackwell Publishing-
dc.titleAlterations in primary and secondary metabolism in Vitis vinifera ‘Malvasía de Banyalbufar’ upon infection with Grapevine leafroll-associated virus 3-
dc.description.versionPeer Reviewed-
dc.contributor.funderInstituto Nacional de Investigación y Tecnología Agraria y Alimentaria (España)-
dc.contributor.funderGovern de les Illes Balears-
dc.contributor.funderJunta de Andalucía-
dc.contributor.funderEuropean Commission-
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