Petersson, Erik
- Department of Plant Biology, Swedish University of Agricultural Sciences
Research article2013Peer reviewed
Glycoalkaloid and calystegine levels in table potato cultivars subjected to wounding, light, and heat treatments
Petersson, Erik; Arif, Usman; Schulzova, Vera; Krtkova, Veronika; Hajslova, Jana; Meijer, Johan; Andersson, Hans Christer; Jonsson, Lisbeth; Sitbon, Folke
Abstract
Potato tubers naturally contain a number of defense substances, some of which are of major concern for food safety. Among these substances are the glycoalkaloids and calystegines. We have here analyzed levels of glycoalkaloids (α-chaconine and α-solanine) and calystegines (A3, B2, and B4) in potato tubers subjected to mechanical wounding, light exposure or elevated temperature; stress treatments that are known or anticipated to induce glycoalkaloid levels. Basal glycoalkaloid levels in tubers varied between potato cultivars. Wounding and light exposure, but not heat, increased tuber glycoalkaloid levels, and the relative response differed among the cultivars. Also calystegine levels varied between cultivars, calystegine B4 showing the most marked variation. However, the total calystegine level was not affected by wounding or light exposure. The results demonstrate a strong variation among potato cultivars with regard to post-harvest glycoalkaloid increases, and suggest that the biosynthesis of glycoalkaloids and calystegines occurs independently of each other.
Keywords
potato (Solanum tuberosum group Tuberosum), alkaloid metabolism, chaconine, food safety, solanine, plant stress response
Published in
Journal of Agricultural and Food Chemistry
2013, Volume: 61, number: 24, pages: 5893-5902
Publisher: American Chemical Society
Arif, Usman
- Department of Plant Biology, Swedish University of Agricultural Sciences
- Department of Plant Biology, Swedish University of Agricultural Sciences
Meijer, Johan
- Department of Plant Biology, Swedish University of Agricultural Sciences
- Department of Plant Biology, Swedish University of Agricultural Sciences
Sitbon, Folke
- Department of Plant Biology, Swedish University of Agricultural Sciences
- Department of Plant Biology, Swedish University of Agricultural Sciences
SLU Authors
Sustainable Development Goals
End hunger, achieve food security and improved nutrition and promote sustainable agriculture
UKÄ Subject classification
Genetics and Breeding
Food Science
Agricultural Science
Publication identifier
DOI: https://doi.org/10.1021/jf400318p
Permanent link to this page (URI)
https://res.slu.se/id/publ/42587