Differential Nitrogen Nutrition Modifies Polyamines and the Amino-Acid Profile of Sweet Pepper Under Salinity Stress.

The horticultural industry demands high-quality resources to achieve excellence in yield and optimal revenues. Nitrogen is a pivotal nutrient to accomplish these goals for plant growth and product quality. However, competition for water in semi-arid regions can force the use of brackish waters, which can impair N uptake.

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

We investigated the effect of supplying nitrogen, as NO or as NO/NH, on the composition of fruits of sweet pepper (Capsicum annuum L. cv. Melchor) plants grown with different CO concentrations ([CO]): ambient or elevated (800 μmol mol).