title: NMR-based metabolomics for organic farming traceability of early potatoes.
abstract: (1)H HRMAS-NMR spectroscopy was successfully used to determine the metabolic profiles of 78 tubers obtained from three early genotypes grown under organic and conventional management. The variation in total hydrogen, carbon, and nitrogen contents was also assessed. A PLS-DA multivariate statistical analysis provided good discrimination among the varieties and cropping systems (100% unknown samples placed in a cross-validation blind test), suggesting that this method is a powerful and rapid tool for tracing organic potatoes. As a result of the farming system, the nitrogen content decreased by 11-14% in organic tubers, whereas GABA and lysine accumulated in the organic tubers of all clones. Clear variations in primary metabolites are discussed to provide a better understanding of the metabolic pathway modifications resulting from agronomical practices.
authors.affiliation: Consiglio per la Ricerca e la sperimentazione in Agricoltura - Agricultural Research Council - Research Centre for Industrial crops (CRA-CIN) Via di Corticella 133, 40128 Bologna, Italy.
authors.forename: Daniela
authors.initials: D
authors.lastname: Pacifico
authors.forename: Lorena
authors.initials: L
authors.lastname: Casciani
authors.forename: Mena
authors.initials: M
authors.lastname: Ritota
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Mandolino
authors.forename: Chiara
authors.initials: C
authors.lastname: Onofri
authors.forename: Anna
authors.initials: A
authors.lastname: Moschella
authors.forename: Bruno
authors.initials: B
authors.lastname: Parisi
authors.forename: Caterina
authors.initials: C
authors.lastname: Cafiero
authors.forename: Massimiliano
authors.initials: M
authors.lastname: Valentini
mesh_terms: D002244:Carbon / Q000032:analysis / Q000378:metabolism; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D055432:Metabolomics / Q000379:methods*; D009584:Nitrogen / Q000032:analysis / Q000378:metabolism; D058871:Organic Agriculture; D011198:Solanum tuberosum / Q000737:chemistry* / Q000235:genetics / Q000254:growth & development / Q000378:metabolism*
chemical_list: D002244:Carbon; D009584:Nitrogen