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Is there a link between greening and light‐enhanced glycoalkaloid accumulation in potato ( Solanum tuberosum L) tubers?
Author(s) -
Edwards Everard J,
Saint Robert E,
Cobb Andrew H
Publication year - 1998
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/(sici)1097-0010(199803)76:3<327::aid-jsfa934>3.0.co;2-g
Subject(s) - glycoalkaloid , greening , solanum tuberosum , chlorophyll , chlorogenic acid , biosynthesis , cultivar , chemistry , pigment , botany , solanum , food science , horticulture , biology , solanaceae , biochemistry , enzyme , ecology , gene , organic chemistry
Potato ( Solanum tuberosum L) tubers (cvs Pentland Dell and Record) were treated with the chlorophyll biosynthesis inhibitors 4‐amino‐5‐fluoropentanoic acid (AFPA) and 3‐amino‐2,3‐dihydrobenzoic acid (gabaculine), and subsequently exposed to daylight for up to 10 days prior to pigment and glyco‐alkaloid analysis. AFPA inhibited the accumulation of total chlorophyll (Chl) by between 50 and 70% in both cultivars throughout the duration of light exposure. The synthesis of Chl b was inhibited by over 80% in both cultivars. Neither inhibitor had a significant effect on light‐enhanced glycoalkaloid accumulation. It is concluded that there is no direct metabolic link between Chl and glycoalkaloid biosynthesis. © 1998 SCI.