Metabolic diversity in tuber tissues of native Chiloe potatoes and commercial cultivars of Solanum tuberosum ssp tuberosum L.

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datacite.alternateIdentifier.citationMetabolomics, Vol.14, N° 10, 138, 2018en_US
datacite.alternateIdentifier.doi10.1007/s11306-018-1428-7en_US
datacite.creatorInostroza Blancheteau, Claudio
datacite.creatorDe Oliveira Silva, Franklin
datacite.creatorDuran, Fabiola
datacite.creatorSolano Solís, Jaime
datacite.creatorObata, Toshihiro
datacite.creatorMachado, Mariana
datacite.creatorFernie, Alisdair R.
datacite.creatorReyes Diaz, Marjorie
datacite.creatorNunes-Nesi, Adriano
datacite.date2018
datacite.subjectPapas (Tubérculos)en_US
datacite.subjectSolanum Tuberosumen_US
datacite.subjectMetabolitosen_US
datacite.titleMetabolic diversity in tuber tissues of native Chiloe potatoes and commercial cultivars of Solanum tuberosum ssp tuberosum L.en_US
dc.coverageChiloéen_US
dc.date.accessioned2019-12-26T16:39:20Z
dc.date.available2019-12-26T16:39:20Z
dc.description.abstractThe native potatoes (Solanum tuberosum ssp. tuberosum L.) cultivated on Chiloé Island in southern Chile have great variability in terms of tuber shape, size, color and flavor. These traits have been preserved throughout generations due to the geographical position of Chiloé, as well as the different uses given by local farmers. Objectives: The present study aimed to investigate the diversity of metabolites in skin and pulp tissues of eleven native accessions of potatoes from Chile, and evaluate the metabolite associations between tuber tissues. Methods: For a deeper characterization of these accessions, we performed a comprehensive metabolic study in skin and pulp tissues of tubers, 3 months after harvesting. Specific targeted quantification of metabolites using 96 well microplates, and high-performance liquid chromatography combined with non-targeted metabolite profiling by gas chromatography time-of-flight mass spectrometry were used in this study. Results: We observed differential levels of antioxidant activity and phenolic compounds between skin and pulp compared to a common commercial cultivar (Desireé). In addition, we uncovered considerable metabolite variability between different tuber tissues and between native potatoes. Network correlation analysis revealed different metabolite associations among tuber tissues that indicate distinct associations between primary metabolite and anthocyanin levels, and antioxidant activity in skin and pulp tissues. Moreover, multivariate analysis lead to the grouping of native and commercial cultivars based on metabolites from both skin and pulp tissues. Conclusions: As well as providing important information to potato producers and breeding programs on the levels of health relevant phytochemicals and other abundant metabolites such as starch, proteins and amino acids, this study highlights the associations of different metabolites in tuber skins and pulp, indicating the need for distinct strategies for metabolic engineering in these tissues. Furthermore, this study shows that native Chilean potato accessions have great potential as a natural source of phytochemicalsen_US
dc.formatPDFen_US
dc.identifier.urihttp://repositoriodigital.uct.cl/handle/10925/2131
dc.language.isoenen_US
dc.sourceMetabolomicsen_US
oaire.resourceTypeArtículo de Revistaen_US
uct.catalogadorpopen_US
uct.comunidadRecursos Naturalesen_US
uct.facultadFacultad de Recursos Naturalesen_US
uct.indizacionISI - Science Citation Indexen_US
uct.indizacionSCOPUSen_US
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