EFFECT OF EXOGENOUS PROLINE ON DURUM WHEAT ( Triticum durum Desf.) UNDER NaCl STRESS

Universitatea din Oradea. Analele. Fascicula Biologie

Katia AMI¹ 

关键词: exogenous proline;    salt stress;    Triticum durum;    osmolyte;    antioxidant.;   

DOI  :  

学科分类：生物科学（综合）

来源: Editura Universitatii din Oradea / University of Oradea Publishing House

【 摘 要 】

This experiment was conducted to determine the effect of exogenous proline (20 mM) on the physiological and biochemical behavior of durum wheat seedlings subjected to a salt constraint (10 g/l NaCl). This effect was evaluated through the estimation of plant water status (leaf relative water content), photosynthetic pigments, sugars content, water soluble proteins content, the osmotic adjustment (endogenous proline and glycine betaine), the lipid peroxidation (the membrane integrity and the malondialdehyde content) and the activity of the antioxydant enzyme catalase in wheat plantlets. Results obtained show that the saline stress affects the majority of the studied parameters. However, exogenous application of proline seems to attenuate the negative effects of the saline stress by the improvement of the content of total chlorophyll, proteins, glycine betaïne and the relative electrolyte leakage. These results suggest the capacity of the exogenous application of proline to improve the tolerance of the saltstressed wheat plants.

【 授权许可】

Unknown