Salt stress is a major abiotic stress that limits agricultural productivity in many regions of the world. To
understand the molecular basis of the salt stress response, two wheat (Triticum durum Desf.) cultivars, Karim
and Azizi, which are of agronomic significance in Tunisia, were grown under non-saline and saline conditions
(100 mM). Leaves and roots of control and salt-stressed plants were harvested after 11 days of salt treatment.
Karim cultivar may behave as a typical Na+ include, which compartmentalizes Na+
within the leaf cell vacuoles where it could be used as an osmoticum to lower the osmotic potential necessary for the maintenance of the plant hydric status. While, accumulation of K+ was greater in Karim cultivar compared to Azizi, in both organs, presenting
an important manifestation of salinity tolerance. Significant changes in metabolism of
antioxidative system were observed, with an increase in protein tyrosine nitration,
which indicates that salinity stress induces a nitro-oxidative stress.
durum wheat; oxidative stress; protein nitration; salinity stress
Plant Breeding and Acclimatization Institute - National Research Institute at Radzikow 05-870 Blonie, POLAND Marek CZUBA, M. Sc., phone: (+48 22) 733 45 95 e-mail: firstname.lastname@example.org PL ISSN: 1429-3862