Photo-induced synthesis of tomatidenol-based glycoalkaloids in Solanum phureja tubers.
The effect of light exposure on the steroidal glycoalkaloid content of Solanum phureja tubers has been investigated and compared with that in domesticated potato (Solanum tuberosum) tubers. The results indicated that the increase in the concentration of solanidine-based glycoalkaloids, alpha-solanine and alpha-chaconine was broadly similar in both species. However, in the S. phureja tubers, light exposure also induced the synthesis of tomatidenol-based glycoalkaloids. These have been identified as alpha- and beta-solamarine. These glycoalkaloids were not detected in tubers continually stored in darkness.
Griffiths
D W
DW
Scottish Crop Research Institute, Invergowrie, Dundee, UK. wgriff@scri.sari.ac.uk
Bain
H
H
Deighton
N
N
Robertson
G W
GW
Finlay
M
M
Dale
B
B
D000470:Alkaloids / Q000096:biosynthesis* / Q000737:chemistry; D008027:Light; D019657:Solanaceae / Q000378:metabolism* / Q000528:radiation effects; D012991:Solanaceous Alkaloids / Q000737:chemistry*
D000470:Alkaloids; D012991:Solanaceous Alkaloids; C012037:solasodine