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Impact of Tomato Grafts on the Potato Tuber Metabolome and Skin Colour

ABSTRACT:

INTRODUCTION: Grafting is a traditional research and plant production technique used to study the long-distance movement of molecules and reduce disease susceptibility, respectively. Tomato/potato grafts are rare examples of successful interspecies grafting, even resulting in commercially available products. Nevertheless, information on the effect of tomato on the quality parameters of potato tubers is scarce.

MATERIALS AND METHODS: The tomato cultivar ‘Mobil’ was grafted with the potato cultivars ‘White Lady’, ‘Hópehely’ and ‘Désirée’, and the phenotype, metabolite composition, and starch and protein contents of tubers were analysed. Anthocyanins were isolated from the tuber skins, and the expression level of the transcription factor ANTHOCYANIN1 (StAN1) was evaluated.

RESULTS: Out of the 112 identified metabolites, the concentrations of twelve compounds were altered in the same direction in all three cultivars. The starch content of tubers was increased, while the protein level remained unaltered in ‘White Lady’ and ‘Hópehely’. The oval tubers became roundish. The tomato scion increased the anthocyanin content of ‘Hópehely’ and ‘Désirée’ tuber skins, which was correlated with the upregulation of StAN1 expression.

CONCLUSION: Tomato has a significant impact on the quality parameters of potato tubers and reduces the asparagine concentration and risk of acrylamide formation.

INSTRUMENT(S): Gas Chromatography MS - positive, Gas Chromatography MS -

PROVIDER: MTBLS7601 | MetaboLights | 2025-02-24

REPOSITORIES: MetaboLights

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			Action	DRS
	20220613_GDES_2.RAW	Raw
	20220613_GDES_3.RAW	Raw
	20220613_HP_1.RAW	Raw
	20220613_HP_2.RAW	Raw
	20220613_HP_3.RAW	Raw

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