Title: Biological and geochemical markers of the geographical origin and genetic identity of potatoes
Authors: ADAMO PaolaZAMPELLA MARIAVITTORIAQUETEL ChristopheAVERSANO RiccardoDAL PIAZ FabrizioDE TOMMASI NunziatinaFRUSCIANTE LuigiIORIZZO MassimoLEPORE LauraCARPUTO Domenico
Citation: JOURNAL OF GEOCHEMICAL EXPLORATION vol. 121 p. 62-68
Publisher: ELSEVIER SCIENCE BV
Publication Year: 2012
JRC N°: JRC73877
ISSN: 0375-6742
URI: http://www.sciencedirect.com/science/article/pii/S0375674212001306
http://publications.jrc.ec.europa.eu/repository/handle/JRC73877
DOI: 10.1016/j.gexplo.2012.07.006
Type: Articles in Journals
Abstract: There is a growing interest in agriculture productions combining safety and quality attributes with clear regional identity. In the last few years several methods have been employed for food authentication and traceability. In this study we tested geochemical data for elemental concentrations of Mn, Cu, Zn, Rb, Sr and Cd and strontium isotope ratio in combination with biological data of 11 secondary metabolites and DNA as markers for the authentication of the origin of early potatoes at small geographical scale level in Italy. DNA fingerprints through 12 SSR primer pairs allowed cultivar identification, confirming the discrimination power of molecular markers. Element concentrations, strontium isotope ratio and secondary metabolite data, through multivariate statistics (PLS-DA), made it possible to clearly assign all the potato samples to the respective administrative regions of cultivation. The validation of the models was successful. It included external prediction tests on 20% of the data randomly selected from each administrative province and a study on the robustness of these multivariate data treatments to uncertainties on measurement results.
JRC Institute:Institute for Reference Materials and Measurements

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