Up-regulation of Heme Oxygenase by Nitric and Effect of Carbon Monoxide in Soybean Plants Subjected to Salinity

NORIEGA GUILLERMO; ZILLI CARLA; SANTA CRUZ DIEGO; CAGGIANO ETHEL; LÓPEZ LECUBE MANUEL; TOMARO MARIA LUJAN; BALESTRASSE KARINA

Soybean 3

Intech

Año: 2011;

The aim of the present study was to investigate whether NO or CO could protect soybean against salt-induced oxidative stress through the modulation of HO activity. Soybean plants were subjected to salt stress after pre-treatments with different concentrations of sodium nitroprussiate (SNP), a well-characterized NO-donor or CO. Overall, our results indicate that  in soybean plants NO is involved in the signaling pathway leading to HO-1 up-regulation under salinity, and that a balance between NO and ROS is important to trigger the antioxidant response against oxidative stress.  On the other hand pretreatment with CO did not provoke any change.