INVESTIGADORES
PELLERANO Roberto Gerardo
congresos y reuniones científicas
Título:
NON ESSENTIAL TRACE ELEMENT UPTAKE IN SOYBEAN SEEDS
Autor/es:
VILLAFAÑE, ROXANA NOELIA; GIMÉNEZ, LAURA; GAIAD, JOSÉ EMILIO; MARCHEVSKY, EDUARDO JORGE; PELLERANO, ROBERTO G.
Lugar:
Mendoza
Reunión:
Congreso; XXXI Reunión Anual de la Sociedad de Biología de Cuyo; 2013
Institución organizadora:
Sociedad de Biología de Cuyo
Resumen:
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.