SHORT COMMUNICATION
Transgenic potato tubers as a source of phenolic
compounds. Localization of anthocyanins in the
peridermis
1
Warsaw Agricultural University,
Department of Animal Nutrition and Feed Science,
Ciszewskiego 8, 02-786 Warsaw, Poland
2
Warsaw Agricultural University, Department of Botany, Faculty of Agriculture and Biology,
Nowoursynowska 159, 02-776 Warsaw, Poland
3
Institute of Biochemistry and Molecular Biology, Wrocław University,
Przybyszewskiego 63, 51-148 Wrocław; Poland
Publication date: 2004-09-16
Corresponding author
I. Kosieradzka
Warsaw Agricultural University, Department of Animal Nutrition and Feed Science, Ciszewskiego 8, 02-786 Warsaw, Poland
Warsaw Agricultural University, Department of Animal Nutrition and Feed Science, Ciszewskiego 8, 02-786 Warsaw, Poland
J. Anim. Feed Sci. 2004;13(Suppl. 2):87-92
KEYWORDS
ABSTRACT
The localization of phenolic compounds in tubers of transgenic potatoes overexpressing
enzymes of the flavonoid synthesis pathway, i.e. chalcone synthase (CHS), chalcone isomerase
(CHI) and dihydroflavonol dehydrogenase (DFR), was examined by fluorescence microscopy.
The study revealed the presence of flavonoids (anthocyanins) in cell vacuoles, mainly in the
peridermis. A relatively higher concentration of anthocyanin compounds was observed in the tissue
of transgenic potato tubers, revealing the expression of chalcone synthase (CHS). The increased
content of flavonoids in transgenic potato tubers may affect their agrotechnical traits and may
increase the nutritive value of the tubers.
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