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Carbon utilization by fruit limits shoot growth in alternate-bearing citrus trees

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Carbon utilization by fruit limits shoot growth in alternate-bearing citrus trees

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dc.contributor.author Martinez-Alcantara, Belen es_ES
dc.contributor.author Iglesias, Domingo J. es_ES
dc.contributor.author Reig Valor, Carmina es_ES
dc.contributor.author Mesejo Conejos, Carlos es_ES
dc.contributor.author Agustí Fonfría, Manuel es_ES
dc.contributor.author Primo-Millo, Eduardo es_ES
dc.date.accessioned 2016-09-05T11:02:19Z
dc.date.available 2016-09-05T11:02:19Z
dc.date.issued 2015-03-15
dc.identifier.issn 0176-1617
dc.identifier.uri http://hdl.handle.net/10251/68720
dc.description.abstract [EN] Fruit load in alternate-bearing citrus trees is reported to alter shoot number and growth during spring, summer, and autumn flushes, and the source-sink balance, which affects the storage and mobilization of reserve nutrients. The aim of this work was to assess the extent of shoot growth inhibition resulting from the presence of fruits in ` Moncada' mandarin trees loaded with fruit (ON) or with very light fruit load (OFF), and to identify the role of carbohydrates and nitrogenous compounds in the competition between fruits and shoots. Growth of reproductive and vegetative organs was measured on a monthly basis. C-13-and N-15-labeled compounds were supplied to trace the allocation of reserve nutrients and subsequent translocation from source to sink. At the end of the year, OFF trees produced more abundant flushes (2.4-and 4.9-fold higher in number and biomass, respectively) than ON trees. Fruits from ON trees accumulated higher C amounts at the expense of developing flushes, whereas OFF trees exhibited the opposite pattern. An inverse relationship was identified between the amount of C utilized by fruits and vegetative flush growth. C-13-labeling revealed an important role for mature leaves of fruit-bearing branches in supporting shoot/fruit growth, and the elevated sink strength of growing fruits on shoots. N availability for vegetative shoots was not affected by the presence or absence of fruits, which accumulated important amounts of N-15. In conclusion, our results show that shoot growth is resource-limited as a consequence of fruit development, and vegetative-growth inhibition is caused by photoassimilate limitation. The competence for N is not a decisive factor in limiting vegetative growth under the experimental conditions of this study. (C) 2014 Elsevier GmbH. All rights reserved. es_ES
dc.description.sponsorship This work was supported by grants from the Instituto Nacional de Investigaciones Agrarias, Spain (RTA2009-00147 and RTA2011-00114-00-00). en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation Instituto Nacional de Investigaciones Agrarias, Spain RTA2009-00147 es_ES
dc.relation Instituto Nacional de Investigaciones Agrarias, Spain RTA2011-00114-00-00 es_ES
dc.relation.ispartof Journal of Plant Physiology es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Alternate bearing es_ES
dc.subject Carbohydrates es_ES
dc.subject Citrus es_ES
dc.subject Nitrogen es_ES
dc.subject Shoot growth es_ES
dc.subject.classification PRODUCCION VEGETAL es_ES
dc.title Carbon utilization by fruit limits shoot growth in alternate-bearing citrus trees es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.jplph.2014.12.001
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Producción Vegetal - Departament de Producció Vegetal es_ES
dc.description.bibliographicCitation Martinez-Alcantara, B.; Iglesias, DJ.; Reig Valor, C.; Mesejo Conejos, C.; Agustí Fonfría, M.; Primo-Millo, E. (2015). Carbon utilization by fruit limits shoot growth in alternate-bearing citrus trees. Journal of Plant Physiology. 176:108-117. doi:10.1016/j.jplph.2014.12.001 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://dx.doi.org/10.1016/j.jplph.2014.12.001 es_ES
dc.description.upvformatpinicio 108 es_ES
dc.description.upvformatpfin 117 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 176 es_ES
dc.relation.senia 302578 es_ES


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