Co-Authors:
Holland, D., Department of Fruit Tree Breeding and Genetics, The Agricultural Research Organization, The Volcani Center, PO Box 6, 50250 Bet Dagan, Israel
Faltin, Z., Department of Fruit Tree Breeding and Genetics, The Agricultural Research Organization, The Volcani Center, PO Box 6, 50250 Bet Dagan, Israel
Perl, A., Department of Fruit Tree Breeding and Genetics, The Agricultural Research Organization, The Volcani Center, PO Box 6, 50250 Bet Dagan, Israel
Ben-Hayyim, G., Department of Fruit Tree Breeding and Genetics, The Agricultural Research Organization, The Volcani Center, PO Box 6, 50250 Bet Dagan, Israel
Eshdat, Y., Department of Fruit Tree Breeding and Genetics, The Agricultural Research Organization, The Volcani Center, PO Box 6, 50250 Bet Dagan, Israel
Abstract:
Citrus salt-stress associated protein (Cit-SAP) reveals significant sequence homology to mammalian glutathione peroxidase (GP). In an attempt to assign biological function to this protein, transformed E. coli cells expressing Cit-SAP were examined for their ability to tolerate free radicals formed by paraquat, an O-2 radical forming agent. In the presence of paraquat, the survival rate of the transformed bacteria expressing Cit-SAP was much higher as compared to the wild-type bacteria. The results support the assumption that Cit-SAP is a plant GP-like protein which participate in the enzymatic system aimed at scavenging oxygen free-radicals in plants. © 1994.