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The effect of potassium fertilization on the metabolite profile of tomato fruit (Solanum lycopersicum L.).
Weinert, Christoph H; Sonntag, Frederike; Egert, Björn; Pawelzik, Elke; Kulling, Sabine E; Smit, Inga.
Afiliación
  • Weinert CH; Max Rubner-Institut, Department of Safety and Quality of Fruit and Vegetables, Haid-und-Neu-Straße 9, 76131, Karlsruhe, Germany. Electronic address: christoph.weinert@mri.bund.de.
  • Sonntag F; Division Quality of Plant Products, Department of Crop Sciences, University of Goettingen, Carl-Sprengel-Weg 1, 37075, Göttingen, Germany.
  • Egert B; Max Rubner-Institut, Department of Safety and Quality of Fruit and Vegetables, Haid-und-Neu-Straße 9, 76131, Karlsruhe, Germany.
  • Pawelzik E; Division Quality of Plant Products, Department of Crop Sciences, University of Goettingen, Carl-Sprengel-Weg 1, 37075, Göttingen, Germany.
  • Kulling SE; Max Rubner-Institut, Department of Safety and Quality of Fruit and Vegetables, Haid-und-Neu-Straße 9, 76131, Karlsruhe, Germany.
  • Smit I; Division Quality of Plant Products, Department of Crop Sciences, University of Goettingen, Carl-Sprengel-Weg 1, 37075, Göttingen, Germany.
Plant Physiol Biochem ; 159: 89-99, 2021 Feb.
Article en En | MEDLINE | ID: mdl-33348242
The macronutrient potassium (K) has vital physiological functions in plants and its availability can strongly impact quality of crops like tomato. The impact of K nutrition on conventional tomato fruit quality parameters has been described several times, but detailed investigations on the effect of K supply on the fruit metabolite profile are still rare. To fill this gap, we investigated the influence of K fertilization on the metabolite profile of tomato fruits. For this purpose, an outdoor pot experiment with three different cocktail tomato cultivars was performed. A fertilization regimen with five K levels was applied, ranging from deficiency to sufficient supply. Fruit samples were analyzed by untargeted GC×GC-MS to cover the primary metabolite profile as well as some secondary metabolites. As verified using ICP-OES, fruit K content was highly proportional to the supplied amount of K. At the metabolite profile level, the most prominent and cultivar-independent effect of increased K fertilization was the rise of tricarboxylic acid (TCA) cycle intermediates. Further effects were more cultivar-specific, for example an increase of the mobile nitrogen pool (e.g. amines like putrescine and amides like asparagine), changes in the profile of minor sugars (especially disaccharides) as well as higher levels of some secondary metabolites. Pronounced response patterns were mainly observed in the cultivars Primavera and Yellow Submarine that were recently characterized as higher yielding, demanding a stronger consideration of cultivar differences in future studies.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Potasio / Solanum lycopersicum / Fertilizantes / Frutas Idioma: En Revista: Plant Physiol Biochem Asunto de la revista: BIOQUIMICA / BOTANICA Año: 2021 Tipo del documento: Article Pais de publicación: Francia
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Potasio / Solanum lycopersicum / Fertilizantes / Frutas Idioma: En Revista: Plant Physiol Biochem Asunto de la revista: BIOQUIMICA / BOTANICA Año: 2021 Tipo del documento: Article Pais de publicación: Francia