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Genetic inhibition of flowering differs between juvenile and adult Citrus trees

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Genetic inhibition of flowering differs between juvenile and adult Citrus trees

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dc.contributor.author Muñoz Fambuena, Natalia es_ES
dc.contributor.author Nicolas-Almansa, M. es_ES
dc.contributor.author Martinez Fuentes, Amparo es_ES
dc.contributor.author Reig Valor, Carmina es_ES
dc.contributor.author Iglesias, D. J. es_ES
dc.contributor.author Primo-Millo, Eduardo es_ES
dc.contributor.author Mesejo Conejos, Carlos es_ES
dc.contributor.author Agustí Fonfría, Manuel es_ES
dc.date.accessioned 2020-11-03T04:31:01Z
dc.date.available 2020-11-03T04:31:01Z
dc.date.issued 2019-02-15 es_ES
dc.identifier.issn 0305-7364 es_ES
dc.identifier.uri http://hdl.handle.net/10251/153835
dc.description.abstract [EN] Background and Aims In woody species, the juvenile period maintains the axillary meristems in a vegetative stage, unable to flower, for several years. However, in adult trees, some 1-year-old meristems flower whereas others remain vegetative to ensure a polycarpic growth habit. Both types of trees, therefore, have non-flowering meristems, and we hypothesize that the molecular mechanism regulating flower inhibition in juvenile trees is different from that in adult trees. Methods In adult Citrus trees, the main endogenous factor inhibiting flower induction is the growing fruit. Thus, we studied the expression of the main flowering time, identity and patterning genes of trees with heavy fruit load (not-flowering adult trees) compared to that of 6-month-old trees (not-flowering juvenile trees). Adult trees without fruits (flowering trees) were used as a control. Second, we studied the expression of the same genes in the meristems of 6-month, and 1-, 3-, 5-and 7-year-old juvenile trees compared to 10-year-old flowering trees. Key Results The axillary meristems of juvenile trees are unable to transcribe flowering time and patterning genes during the period of induction, although they are able to transcribe the FLOWERING LOCUS T citrus orthologue (CiFT2) in leaves. By contrast, meristems of not-flowering adult trees are able to transcribe the flowering network genes but fail to achieve the transcription threshold required to flower, due to CiFT2 repression by the fruit. Juvenile meristems progressively achieve gene expression, with age-dependent differences from 6 months to 7 years, FD-like and CsLFY being the last genes to be expressed. Conclusions During the juvenile period the mechanism inhibiting flowering is determined in the immature bud, so that it progressively acquires flowering ability at the gene expression level of the flowering time programme, whereas in the adult tree it is determined in the leaf, where repression of CiFT2 gene expression occurs. es_ES
dc.description.sponsorship We thank Cristina Ferrandiz (IBMCP-UPV, Spain) and Fernando Andres (UMR AGAP, France) for useful comments on the manuscript. We thank D. Westall for her help in editing the manuscript. This work was supported by a grant from the Ministerio de Economia y Competitividad, Spain (RTA2013-0024-C02-02) es_ES
dc.language Inglés es_ES
dc.publisher Oxford University Press es_ES
dc.relation.ispartof Annals of Botany es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Alternate bearing es_ES
dc.subject AP1 es_ES
dc.subject Citrus es_ES
dc.subject FLC es_ES
dc.subject Flowering es_ES
dc.subject Fruit es_ES
dc.subject FT es_ES
dc.subject FD es_ES
dc.subject Juvenility es_ES
dc.subject LFY es_ES
dc.subject TFL1 es_ES
dc.subject.classification PRODUCCION VEGETAL es_ES
dc.title Genetic inhibition of flowering differs between juvenile and adult Citrus trees es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1093/aob/mcy179 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//RTA2013-00024-C02-02/ES/La brotación de otoño y su relación con la floración en los agrios. Control hormonal y genético./ es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Agroforestal Mediterráneo - Institut Agroforestal Mediterrani es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Producción Vegetal - Departament de Producció Vegetal es_ES
dc.description.bibliographicCitation Muñoz Fambuena, N.; Nicolas-Almansa, M.; Martinez Fuentes, A.; Reig Valor, C.; Iglesias, DJ.; Primo-Millo, E.; Mesejo Conejos, C.... (2019). Genetic inhibition of flowering differs between juvenile and adult Citrus trees. Annals of Botany. 123(3):483-490. https://doi.org/10.1093/aob/mcy179 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1093/aob/mcy179 es_ES
dc.description.upvformatpinicio 483 es_ES
dc.description.upvformatpfin 490 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 123 es_ES
dc.description.issue 3 es_ES
dc.identifier.pmid 30289429 es_ES
dc.identifier.pmcid PMC6377094 es_ES
dc.relation.pasarela S\384627 es_ES
dc.contributor.funder Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria es_ES
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