The Form in Which Nitrogen Is Supplied Affects the Polyamines, Amino Acids, and Mineral Composition of Sweet Pepper Fruit under an Elevated CO2 Concentration

• DOI: 10.1021/acs.jafc.6b04118
• Publication Date: 2017-01-11T17:49:02Z
• Authors: Maria C. Piñero; Ginés Otálora; Manuel E. Porras; Mari C. Sánchez-G...; Pilar Lorenzo; Evangelina Medrano; Francisco M. del ...
• Keywords: Chlorophyll; 0301 basic medicine; 03 medical and health sciences; Nitrogen; Fruit; Polyamines; Amino Acids; Carbon Dioxide; Capsicum; 6. Clean water

We investigated the effect of supplying nitrogen, as NO3- or NO3-/NH4+, on composition fruits sweet pepper (Capsicum annuum L. cv. Melchor) plants grown with different CO2 concentrations ([CO2]): ambient elevated (800 μmol mol-1). The results show that application NH4+ and high [CO2] affected chroma related to chlorophylls. Ca, Cu, Mg, P, Zn were significantly reduced in nourished NH4+, loss Fe being more dramatic at increased [CO2], which was also case protein concentration. concentration total phenolics by unaffected [CO2]. Globally, main factor fruit free amino acid concentrations. Polyamines differently: putrescine while response cadaverine depended form N supplied.