|Gayer, Aymeric -|
Submitted to: Potato Association of America Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: April 16, 2012
Publication Date: August 12, 2012
Citation: Gayer, A., Bamberg, J.B. 2012. Genetic diversity of thiamine and folate in primitive cultivated and wild potato (Solanum) species [abstract]. Potato Association of America Proceedings. Paper No. 099. Technical Abstract: Biofortification of staple crops like potato via breeding is an attractive strategy to reduce human micronutrient deficiencies. A prerequisite is metabolic phenotyping of genetically diverse material which can be used as parents in breeding programs. Thus, the natural genetic diversity of thiamine and folate contents was investigated in indigenous cultivated potatoes (Solanum tuberosum group Andigena) and wild potato species (Solanum section Petota). Significant differences were found among clones and species. For about 50% of the clones there were variations in thiamine and folate contents between years. Genotypes which contained over two-fold the thiamine and four-fold the folate content compared to the modem variety Russet Burbank were identified and should be useful material to integrate in breeding programs which aim to enhance the nutritional value of potato. Transcriptome comparison of primitive cultivars and wild species with widely different amounts of thiamine and folate is currently used to explore metabolic regulation of these vitamins.