title: Effect of light exposure on the glycoalkaloid content of Solanum phureja tubers.
abstract: The individual glycoalkaloid contents of tubers from eleven Solanum phureja genotypes have been determined prior to and following exposure to light. In all genotypes, light exposure resulted in a statistically significant increase in total glycoalkaloid content. In nine of the genotypes studied, this was not only due to an increase in the levels of the solanidine-based glycoalkaloids, alpha-solanine and alpha-chaconine, but also due to the light-induced synthesis of a tomatidenol-based glycoalkaloid, alpha-solamarine. Those genotypes that accumulated alpha-solamarine in their tubers also contained tomatidenol-based glycoalkaloids in their leaves, but only solanidine-based glycoalkaloids were detected in the sprouts.
authors.affiliation: Scottish Crop Research Institute, Invergowrie, Dundee, DD2 5DA, Scotland, UK. wgriff@scri.sari.ac.uk
authors.forename: D W
authors.initials: DW
authors.lastname: Griffiths
authors.forename: M F
authors.initials: MF
authors.lastname: Dale
mesh_terms: D008027:Light; D018515:Plant Leaves / Q000378:metabolism; D012991:Solanaceous Alkaloids / Q000378:metabolism*; D011198:Solanum tuberosum / Q000378:metabolism / Q000528:radiation effects*
chemical_list: D012991:Solanaceous Alkaloids