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BioMed Research International
Volume 2013 (2013), Article ID 389723, 7 pages
Research Article

Genotype-Specific Changes in Vitamin B6 Content and the PDX Family in Potato

1Washington State University, Pullman, WA 99164, USA
2Humboldt University Berlin, 10115 Berlin, Germany
3USDA-Agricultural Research Service, Prosser, WA 99350, USA

Received 30 April 2013; Revised 26 June 2013; Accepted 28 June 2013

Academic Editor: Adriana Modesto Vieira

Copyright © 2013 Sutton Mooney et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Vitamin B6 is one of the most versatile cofactors in plants and an essential phytonutrient in the human diet that benefits a variety of human health aspects. Although biosynthesis of the vitamin has been well resolved in recent years, the main research is currently based on Arabidopsis thaliana with very little work done on major crop plants. Here we provide the first report on interactions and expression profiles of PDX genes for vitamin B6 biosynthesis in potato and how vitamin B6 content varies in tubers of different genotypes. The results demonstrate that potato is an excellent resource for this vitamin and that strong natural variation in vitamin B6 content among the tested cultivars indicates high potential to fortify vitamin B6 nutrition in potato-based foods.