Is there a link between greening and light-enhanced glycoalkaloid accumulation in potato (Solanum tuberosumL) tubers?
✍ Scribed by Edwards, Everard J; Saint, Robert E; Cobb, Andrew H
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 337 KB
- Volume
- 76
- Category
- Article
- ISSN
- 0022-5142
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✦ Synopsis
Potato (Solanum tuberosum L) tubers (cvs Pentland Dell and Record) were treated with the chlorophyll biosynthesis inhibitors 4-amino-5-Ñuoropentanoic acid (AFPA) and 3-amino-2,3-dihydrobenzoic acid (gabaculine), and subsequently exposed to daylight for up to 10 days prior to pigment and glycoalkaloid 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 signiÐcant e †ect on light-enhanced glycoalkaloid accumulation. It is concluded that there is no direct metabolic link between Chl and glycoalkaloid biosynthesis.
1998 SCI.