NON ESSENTIAL TRACE ELEMENT UPTAKE IN SOYBEAN SEEDS

VILLAFAÑE, ROXANA NOELIA; GIMÉNEZ, LAURA; GAIAD, JOSÉ EMILIO; MARCHEVSKY, EDUARDO JORGE; PELLERANO, ROBERTO G.

Mendoza

Congreso; XXXI Reunión Anual Sociedad Biologia de Cuyo,; 2013

SOCIEDAD DE BIOLOGIA DE CUYO

?Non Essential Trace Element Uptake in Soybean Seeds?; Villafañe R.,Gimenez L., Gaiad J.,Marchevsky E., Pellerano R.; XXXI Reunión Anual Sociedad Biologia de Cuyo, Noviembre 2013, Mendoza. Argentina has become the third largest soybean grower in the world. Currently, the increasing dependence of soybean meal for industrial production promotes the expansion of land for cultivation including polluted regions near human activities. Therefore, non-essential elements may be assimilated by plants through the foliage (as external deposits) or root system. In this context, metabolic and physiological processes play important roles in regulating the transfer and behavior of trace elements in the soil/plant/animal system. The aim of this work was to evaluate the transfer of metals and its relation to crop quality, of two non-essential trace elements (Ni and Pb), through soil and soybean sampling. Trace element concentrations were determined by inductively coupled plasma optical emission spectroscopy (ICP-OES) after dry digestion (550 °C). The average contents determined in ashes from vegetal samples were: Pb, 23.5 μg g-1 and Ni 6.6 μg g-1. Our results show that soybean seeds have concentrations greater than the soils of origin (Pb, 15.0 μg g-1 and Ni, 4.6 μg g-1) indicating the possible uptake of these two elements. Finally, the non-essential element bioaccumulation depending on the rhizosphere soil compartment showed significant and high regression coefficients.