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Expression of a Chloroplast-Targeted Cyanobacterial Flavodoxin in tomato plants increases harvest index by altering plant size and productivity

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dc.citation.titleFrontiers in Plant Sciencees
dc.citation.volume10es
dc.creatorMayta, Martín L.
dc.creatorArce, Rocío C.
dc.creatorZurbriggen, Matias D.
dc.creatorValle, Estela M.
dc.creatorHajirezaei, Mohammad-Reza
dc.creatorZanor, María Inés
dc.creatorCarrillo, Néstor
dc.date.accessioned2020-08-27T01:36:45Z
dc.date.available2020-08-27T01:36:45Z
dc.date.issued2019-11-08
dc.descriptionTomato is the most important horticultural crop worldwide. Domestication has led to the selection of highly fruited genotypes, and the harvest index (HI), defined as the ratio of fruit yield over total plant biomass, is usually employed as a biomarker of agronomic value. Improvement of HI might then result from increased fruit production and/or lower vegetative growth. Reduction in vegetative biomass has been accomplished in various plant species by expression of flavodoxin, an electron shuttle flavoprotein that interacts with redox-based pathways of chloroplasts including photosynthesis. However, the effect of this genetic intervention on the development of reproductive organs has not been investigated. We show herein that expression of a plastid-targeted cyanobacterial flavodoxin in tomato resulted in significant reduction of plant size affecting stems, leaves, and fruit. Decreased size correlated with smaller cells and was accompanied by higher pigment contents and photosynthetic activities per leaf cross-section. Flavodoxin accumulated in green fruit but declined with ripening. Significant increases in HI were observed in flavodoxin-expressing lines due to the production of higher fruit number per plant in smaller plants. Therefore, overall yields can be enhanced by increasing plant density in the field. Metabolic profiling of ripe red fruit showed that levels of sugars, organic acids, and amino acids were similar or higher in transgenic plants, indicating that there was no trade-off between increased HI and fruit metabolite contents in flavodoxin-expressing plants. Taken together, our results show that flavodoxin has the potential to improve major agronomic traits when introduced in tomato.es
dc.description.filFil: Mayta, Martín L. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario (IBR-CONICET); Argentina.es
dc.description.filFil: Arce, Rocío C. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario (IBR-CONICET); Argentina.es
dc.description.filFil: Zurbriggen, Matias D. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario (IBR-CONICET); Argentina.es
dc.description.filFil: Valle, Estela M. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario (IBR-CONICET); Argentina.es
dc.description.filFil: Hajirezaei, Mohammad-Reza. Leibniz Institute of Plant Genetics and Crop Plant Research; Germany.es
dc.description.filFil: Zanor, María Inés. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario (IBR-CONICET); Argentina.es
dc.description.filFil: Carrillo, Néstor. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario (IBR-CONICET); Argentina.es
dc.description.sponsorshipAgencia Nacional de Promoción Científica y Tecnológica (ANPCyT): PICT-2015-3828es
dc.description.sponsorshipAgencia Nacional de Promoción Científica y Tecnológica (ANPCyT): PICT-2017-1301es
dc.description.sponsorshipConsejo Nacional de Investigaciones Científicas y Técnicas (CONICET)es
dc.description.sponsorshipUniversidad Nacional de Rosarioes
dc.description.sponsorshipDüsseldorf Universityes
dc.formatapplication/pdf
dc.format.extent1-13es
dc.identifier.issn1664-462Xes
dc.identifier.urihttp://hdl.handle.net/2133/18751
dc.language.isoenges
dc.publisherFrontiers Mediaes
dc.relation.publisherversionhttps://www.frontiersin.org/articles/10.3389/fpls.2019.01432/full#h10es
dc.relation.publisherversionhttps://doi.org/10.3389/fpls.2019.01432es
dc.rightsopenAccesses
dc.rights.holderMayta, Martín L.es
dc.rights.holderArce, Rocío C.es
dc.rights.holderZurbriggen, Matias D.es
dc.rights.holderValle, Estela M.es
dc.rights.holderHajirezaei, Mohammad-Rezaes
dc.rights.holderZanor, María Inéses
dc.rights.holderCarrillo, Néstores
dc.rights.textAttribution 4.0 International (CC BY 4.0)es
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/*
dc.subjectTomatoes
dc.subjectFlavodoxines
dc.subjectChloroplastses
dc.subjectTransgenic plantses
dc.subjectHarvest indexes
dc.titleExpression of a Chloroplast-Targeted Cyanobacterial Flavodoxin in tomato plants increases harvest index by altering plant size and productivityes
dc.typearticle
dc.typeartículo
dc.typepublishedVersion
dc.type.collectionarticulo
dc.type.versionpublishedVersiones

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