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- Title
Isolation and characterization of a jacalin-related mannose-binding lectin from salt-stressed rice (Oryza sativa) plants.
- Authors
Zhang, W; Peumans, W J; Barre, A; Astoul, C H; Rovira, P; Rougé, P; Proost, P; Truffa-Bachi, P; Jalali, A A; Van Damme, E J
- Abstract
A novel plant lectin was isolated from salt-stressed rice (Oryza sativa L.) plants and partially characterized. The lectin occurs as a natural mixture of two closely related isoforms consisting of two identical non-covalently linked subunits of 15 kDa. Both isoforms are best inhibited by mannose and exhibit potent mitogenic activity towards T-lymphocytes. Biochemical analyses and sequence comparisons further revealed that the rice lectins belong to the subgroup of mannose-binding jacalin-related lectins. In addition, it could be demonstrated that the lectins described here correspond to the protein products of previously described salt-stress-induced genes. Our results not only identify the rice lectin as a stress protein but also highlight the possible importance of protein-carbohydrate interactions in stress responses in plants.
- Publication
Planta, 2000, Vol 210, Issue 6, p970
- ISSN
0032-0935
- Publication type
Journal Article
- DOI
10.1007/s004250050705