Dormant Flower Buds Actively Accumulate Starch over Winter in Sweet Cherry

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dc.bibliographicCitation.stpage171es_ES
dc.bibliographicCitation.titleFrontiers Of Plant Scienceen
dc.bibliographicCitation.volume9es_ES
dc.contributor.authorFadón Adrián, Ericaes_ES
dc.contributor.authorHerrero Romero, Maríaes_ES
dc.contributor.authorRodrigo García, Francisco Javieres_ES
dc.coverage.spatialhortofruticulturaes_ES
dc.date.accessioned2018-03-12T12:10:13Z
dc.date.available2018-03-12T12:10:13Z
dc.date.issued2018es_ES
dc.description.abstractTemperate woody perennials survive to low temperatures in winter entering a dormant stage. Dormancy is not just a survival strategy, since chilling accumulation is required for proper flowering and arbitrates species adaptation to different latitudes. In spite of the fact that chilling requirements have been known for two centuries, the biological basis behind remain elusive. Since chilling accumulation is required for the normal growth of flower buds, it is tempting to hypothesize that something might be going on at this particular stage during winter dormancy. Here, we characterized flower bud development in relation to dormancy, quantifying changes in starch in the flower primordia in two sweet cherry cultivars over a cold and a mild year. Results show that, along the winter, flower buds remain at the same phenological stage with flower primordia at the very same developmental stage. But, surprisingly, important variation in the starch content of the ovary primordia cells occurs. Starch accumulated following the same pattern than chilling accumulation and reaching a maximum at chilling fulfillment. This starch subsequently vanished during ecodormancy concomitantly with ovary development before budbreak. These results showed that, along the apparent inactivity during endodormancy, flower primordia were physiologically active accumulating starch, providing a biological basis to understand chilling requirements.en
dc.description.otherchilling accumulationen
dc.description.otherflower budsen
dc.description.otherflower primordiaen
dc.description.otherstarchen
dc.description.othersweet cherryen
dc.description.otherendodormancyen
dc.description.sponsorshipThis research was supported by Ministerio de Economía, Industria y Competitividad (MEIC) – European Regional Development Fund, European Union (AGL2012-40239 and BES-2010-037992 to EF); Instituto Nacional de Investigación Agraria (INIA) (RTA2014-00085-00, RFP2015-00015-00, and RTA2017-00003-00); Gobierno de Aragón – European Social Fund, European Union (Grupo Consolidado A-43).es_ES
dc.description.statusPublishedes_ES
dc.identifier.citationFrontiers Of Plant Science, vol. 9, 2018es
dc.identifier.urihttp://hdl.handle.net/10532/3986
dc.language.isoenes_ES
dc.relation.doidoi: 10.3389/fpls.2018.00171es_ES
dc.relation.urihttps://www.frontiersin.org/articles/10.3389/fpls.2018.00171/fulles_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.agrovocCerezoes
dc.subject.agrovocPrunus aviumes
dc.subject.agrovocFloraciónes
dc.subject.agrovocPlantas perennesen
dc.titleDormant Flower Buds Actively Accumulate Starch over Winter in Sweet Cherryen
dc.typeJournal Contribution*
dc.type.refereedRefereedes_ES
dc.type.specifiedArticlees_ES

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