A GC-MS-based metabolomics study on the tubers of commercial potato cultivars upon storage.
Using gas chromatography-mass spectrometry (GC-MS) as a system for the detection of amino acids, organic acids, sugars, sugar alcohols, and fatty acids, we characterised six commercial potato cultivars (Hópehely, Katica, Lorett, Somogyi kifli, Vénusz Gold, and White Lady) with different pedigrees, starch contents, cooking types, and dormancy periods, in five developmental stages from harvest to sprouting. The tubers were stored at 20-22°C in the dark. The metabolite data were subjected to principal component analysis. No correlation between metabolite contents of freshly harvested tubers and starch content or cooking type of the cultivars was detected. The storage decreased the fructose and sucrose and increased the proline concentrations of tubers. Irrespective of the length of dormancy a substantial difference in metabolite composition at each time point upon storage was detected in each cultivar except Somogyi kifli, the only cultivar amongst those tested with a pure Solanum tuberosum origin and A cooking type.
Agricultural Biotechnology Center, P.O. Box 411, H-2101 Gödöllő, Hungary.
Csilla
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Uri
Agricultural Biotechnology Center, P.O. Box 411, H-2101 Gödöllő, Hungary.
Zsófia
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Juhász
University of Pannonia, Centre of Agricultural Sciences, Potato Research Centre, P.O. Box 71, H-8361 Keszthely, Hungary.
Zsolt
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Polgár
Agricultural Biotechnology Center, P.O. Box 411, H-2101 Gödöllő, Hungary. Electronic address: banfalvi@abc.hu.
Zsófia
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Bánfalvi
D000596:Amino Acids / Q000032:analysis / Q000378:metabolism; D005227:Fatty Acids / Q000032:analysis / Q000378:metabolism; D061353:Food Storage; D005632:Fructose / Q000032:analysis / Q000378:metabolism; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D055432:Metabolomics / Q000379:methods*; D035281:Plant Tubers / Q000737:chemistry* / Q000378:metabolism; D011198:Solanum tuberosum / Q000737:chemistry* / Q000191:economics / Q000378:metabolism; D013213:Starch / Q000032:analysis / Q000378:metabolism; D013395:Sucrose / Q000032:analysis / Q000378:metabolism
D000596:Amino Acids; D005227:Fatty Acids; D005632:Fructose; D013395:Sucrose; D013213:Starch
GC–MS; Metabolomics; Solanum tuberosum; Storage; Tuber