Interaction of an oligogalacturonide mixture with Cu2+ ion and its effect on tomato seedling roots

Main Article Content

O. Cartaya

Abstract

Pectimorf is a plant bioactive compound obtained
in the National Institute of Agricultural Sciences (INCA) from
citrus peel. This product is constituted by a mixture of ? 1-4
oligogalacturonides with a degree of polymerization between
7 and 16. Each galacturonide residue has a terminal carboxyl
group allowing the formation of complex with heavy metals. In
this work, a metal:ligand molar ratio of 1:1 and 1:2 between
oligogalacturonides and Cu2+ was established. Changes in
oligogalacturonide structures as a consequence of their bound
with Cu2+ ion were identified by IR-spectroscopy. On the other
hand, some trials were done to analyze the possibility that the
oligogalacturonides could protect tomato seedlings growing
at toxic levels of metal, being evidenced a bigger radical growth
and a decrease of the number of roots in the plants treated
with the product, effects that counteract those of toxicity for
heavy metals.

Article Details

How to Cite
Cartaya, O. (2013). Interaction of an oligogalacturonide mixture with Cu2+ ion and its effect on tomato seedling roots. Cultivos Tropicales, 26(4), 101–105. Retrieved from https://ediciones.inca.edu.cu/index.php/ediciones/article/view/474
Section
Original Article