| dc.creator | Covarrubias, María Paz | |
| dc.creator | Benedetto, Gianfranco | |
| dc.creator | Muñoz-Espinoza, Claudia | |
| dc.creator | Andrade, Diego | |
| dc.creator | Maucourt, Mickael | |
| dc.creator | Deborde, Catherine | |
| dc.creator | Moing, Annick | |
| dc.creator | Valenzuela, María Luisa | |
| dc.creator | Miyasaka-De Almeida, Andrea | |
| dc.date | 2018-09-10T14:27:31Z | |
| dc.date | 2022-06-18T19:19:35Z | |
| dc.date | 2018-09-10T14:27:31Z | |
| dc.date | 2022-06-18T19:19:35Z | |
| dc.date | 2016-06-24 | |
| dc.date | 2016 | |
| dc.date | 2016-06-21 | |
| dc.date.accessioned | 2023-08-22T03:58:03Z | |
| dc.date.available | 2023-08-22T03:58:03Z | |
| dc.identifier | 1130197 | |
| dc.identifier | https://hdl.handle.net/10533/219884 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/8317447 | |
| dc.description | Peaches and nectarines are among the most exported fresh fruits from Chile. Fruit acceptance by final consumers
is defined by quality parameters as size, taste, color and juiciness. In these fruits the balance between soluble
sugars present in the mesocarp and organic acids determines the taste. Biomass production and metabolites
accumulation by fruits occur during different developmental stages and depend on photosynthesis and carbon
exportation by source leaves. Carbon supply to fruits can be potentiated through field practices of thinning (removal
of flowers/fruits) that lead to change in source-sink balance. It is well known that thinning leads to fruits with
increased size, but it is not known how this practice could influence fruit quality in terms of metabolite composition.
In this work, we analyzed primary metabolite of nectarine cv‘Magique’ at different developmental stages and from
trees submitted to thinning. Fruit mesocarp primary metabolites were analyzed across the whole development
until harvest and subsequently postharvest ripening. Sugars, amino acids and organic acids were measured by
1H-NMR,HPAEC-PAD and HPLC-DAD. In addition, harvest and ripening quality parameters as size, juiciness and
brix was performed. We observed that fruits from thinned trees had better quality parameters than unthinned
trees. Our results also indicated that thinning affects metabolic composition from early through late developmental
stages. Principal component analysis of phenotypic and metabolic data at different stages of development and
thinning revealed that glucose, fructose, sucrose, inositol, galactose and succinate concentrations at early stages
of development (S1 and S2 stages) can be used to segregate fruits with higher quality. In conclusion, we suggest
that profile of these metabolites in early stages of development could be a metabolic predictor of final fruit quality
in nectarines. | |
| dc.language | eng | |
| dc.relation | instname: Conicyt | |
| dc.relation | reponame: Repositorio Digital RI2.0 | |
| dc.relation | International Rosaceae Genomics Conference | |
| dc.relation | 8 | |
| dc.relation | info:eu-repo/grantAgreement//1130197 | |
| dc.relation | info:eu-repo/semantics/dataset/hdl.handle.net/10533/93486 | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Chile | |
| dc.rights | http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ | |
| dc.title | Primary metabolite fruit profile is altered in response to source-sink imbalance and can be used as early quality predictors in nectarine | |
| dc.type | Ponencia | |
| dc.type | info:eu-repo/semantics/lecture | |
| dc.coverage | Angers | |
