Tuber Development - The Potato: Botany, Production and Uses - page 60

during the bulking phase. The major potato
tuber protein is patatin, a family of 40-42 kDa
glycoproteins that can represent around 40% of
the soluble protein in tubers (Mignery et al.,
1988). Besides starch and other storage pro-
teins, the accumulation of metabolites like
amino acids, flavonoids, carotenoids, and other
health-related compounds requires additional

signaling and gene regulatory networks, and
variation between cultivars is often genetic-
ally controlled. Similar to the unraveling of
the genes driving tuber initiation and growth,
the elucidation of genes with functions im-
pacting nutritional content and appearance is
needed to understand which genes make the
potato tuber.

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