TY - PRO AU - Suleymanov,S. AU - Aliev,D. AU - Bedoshvili,D. AU - Husseynova,I. ED - Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT) ED - TI - Variability in protein content of photosynthetic membranes in genotypes of Triticum aestivum differing in drought tolerance U1 - 633.157 PY - 2004/// CY - Tbilisi (Georgia) PB - CIMMYT KW - Bread KW - Drought resistance KW - Photosynthesis KW - AGROVOC KW - Protein content KW - Seedlings KW - Wheat KW - Triticum aestivum KW - Genotypes KW - CIMMYT N1 - Abstract only N2 - Seedlings of two bread wheat varieties Giy- matli-2/17 (drought susceptible) and Saratovskaya- 29 (drought tolerant) were grown under conditions of normal water supply and water stress. The synthesis rate for a -and b -subunits of the CFI ATF-synthase complex (with Mr 57.5 and 55 d/Sa, respectively) has been found to decrease in both wheat genotypes as compared to the check. Synthesis of polypeptides within the nuclear antenna FC 2 is also affected by water stress. At the same time, in drought-susceptible variety Giymatli-2/17, the polypeptide rate 48.5 d/Sa (CP 47) is particularly lowered, while protein 44 d/Sa (CP 43) disappears completely. D 1 protein of nucleus FC 2 is also near to disappearance in Giymatli-2/17 .A new band in the area 40.5 d/Sa is found to appear in drought tolerant Saratovskaya-29. Giymatli-2/17 has been found completely void of polypeptide in the area 19 d/Sa. Also observable is a reduction of protein synthesis in the area 16.5 d/Sa. Possible mechanisms of drought action on the structural-functional components of photosynthetic activity of wheat are discussed ER -