Abstract
Leaves of paprika pepper (Capsicum annuum L., cv Negral) plants sprayed with Ti(IV)-ascorbate showed an important increase of iron and titanium concentrations, as well as of the activity of peroxidase and catalase enzymatic systems. Leaf-Ti increase is similar for both greenhouse and field crop experiments, but increases in leaf Fe are more marked in plants growing under field conditions.
The levels of the Ti, Fe, peroxidase and catalase in the leaves of the Ti-sprayed and the Ti-unsprayed plants indicate that titanium improves the plant iron uptake up to 50% in the greenhouse crop and close to 100% in the field conditions experiment. Peroxidase, catalase activities and Fe concentrations of the leaves were increased through Ti-applications.
The results indicate that the “beneficial” role of titanium on the biological activity of C. annuum plants comes through the improvement of both plant Fe uptake and Fe-active fraction in cells of the Ti(IV)-sprayed leaves.
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Carvajal, M., Martínez-Sanchez, F., Pastor, J.J., Alcaraz, C.F. (1995). Leaf spray with Ti(IV) ascorbate improves the iron uptake and iron activity in Capsicum annuum L. plants. In: Abadía, J. (eds) Iron Nutrition in Soils and Plants. Developments in Plant and Soil Sciences, vol 59. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0503-3_1
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DOI: https://doi.org/10.1007/978-94-011-0503-3_1
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