INVESTIGADORES
SANTA CRUZ Diego Mario
congresos y reuniones científicas
Título:
Study of a new alternative antioxidant in soybean plants subjected to abiotic stress
Autor/es:
ZILLI, CG; SANTA-CRUZ, DM; CAGGIANAO E; ROMANELLO M; TOMARO ML.; BALESTRASSE, KB
Lugar:
Mendoza, Argentina
Reunión:
Congreso; Reunión Científica Conjunta de la Sociedad de Biología de Cuyo, Secretaría de Ciencia, Técnica y Post Grado UN de Cuyo, Secretaría Ciencia y Técnica Facultades de Ciencias Médicas y Ciencias Agrarias Universidad Nacional de Cuyo-Dirección de Investigación; 2010
Resumen:
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We
have recently, demonstrated
that the induction of heme oxygenase-1 (HO-1) plays a protective role
for soybean plants against oxidative stress produced by cadmium and
UV-B radiation. At this moment we propose to investigate if the
enzyme has the same capacity against another type of abiotic stress,
such as drought, for to demonstrate that heme oxygenase acts as an
enzyme of plant antioxidant defense system under several different
stress situations, as occur in mammalian tissues. To carry out this
objective we propose to study, in leaf, root and nodule of soybean
plants, the oxidative stress generation; the behavior of classical
antioxidant system; the behavior of HO-1 activity and protein and
gene expression; the effect of its reaction products and inhibitors
on the oxidative stress parameters; the signaling mechanism that
produce HO-1 induction and the immunohistochemistry localization of
the enzyme in the different plant tissues. The results obtained let
us undoubtedly demonstrate the involvement of HO-1 in the antioxidant
defense system in plants. This finding will allow the increase in the
knowledge of the defense mechanisms in interesting economic plants
for our country, such as soybean, and against drought, an abiotic
stress considered one of the most important factors limiting plant
performance and yield worldwide.