SYNTHESIS OF COLD SHOCK PROTEINS IN WHEAT TRIBE SEEDLINGS OF THE FAMILY POACEAE

The patterns of proteins synthesized in plants during their acclimatio n to chilling temperatures were studied in some members of the family Poaceae (tribe Triticeae). Cold acclimation induced de novo synthesis of a 43 kD protein in seedlings of all species from the genera Triticu m and Aegilops irrespective of their genome ploidy and type of plant d evelopment. In members of the genus Secale, a 28 kD protein was induce d by the same cold shock conditions. The quantitative and qualitative composition of proteins synthesized in plants during cold acclimation was genus-specific rather than species-specific and depended on plant genotypic traits. In the seedlings studied, the rates of the synthesis of some proteins depended on germination temperature.