Growth and solute composition in two wheat species experiencing combined influence of stress conditions
RUSSIAN JOURNAL OF PLANT PHYSIOLOGY, vol.51, no.2, pp.203-208, 2004 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 51 Issue: 2
- Publication Date: 2004
- Doi Number: 10.1023/b:rupp.0000019215.20500.6e
- Journal Name: RUSSIAN JOURNAL OF PLANT PHYSIOLOGY
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.203-208
- Keywords: Triticum aestivum, Triticum durum, carbohydrates, drought, phenolics, praline, protein, salt stress, waterlogging, COLD-ACCLIMATION, CARBOHYDRATE CONTENT, OXYGEN DEFICIENCY, OXIDATIVE STRESS, DURUM-WHEAT, HEAT-SHOCK, METABOLISM, TOLERANCE, ACCUMULATION, PROLINE
- Ankara University Affiliated: No
Abstract
The effects of environmental stress combinations on the soluble metabolites were investigated in several cultivars of Triticum aestivum and T durum. The seedlings grown at optimum (24/16degreesC), low (5/-5degreesC) (LT), and high (40/30degreesC) (HT) day/night temperature conditions were exposed to waterlogging, drought, and salinity (0.7% NaCl, w/w) stresses for six days. Root and shoot fresh weight significantly decreased under waterlogging, drought and salt stresses. Fresh weight was most reduced at severe drought + HT combinations. The lowest relative water content was found under drought stress + HT combination. Soluble carbohydrate (SC) contents increased under LT conditions, but decreased under HT conditions. Under HT + salt combinations, T aestivum genotypes showed higher SC content than T durum genotypes. Proline content significantly increased in the case of water deficit and salt stress. Under drought and salt stresses, T aestivum genotypes had lower proline contents than T durum genotypes. These results indicate that biochemical responses to drought, waterlogging, and salt stresses were significantly changed in wheat seedlings under LT and HT conditions.