The effect of elevated temperatures on protein synthesis in pollen from Petunia hybrida and Lilium longiflorum was investigated and compared with their effect in root-tissue tissue of Petunia. The results demonstrate that the incorporation of [35-S] methionine into protein does not change in pollen incubated at temperatures up to 40°C, but decreased with 65% at 45°C as compared to incorporation at 27"e.The qualitative changes that occurred for the proteins synthesized at 2r and 40°C were not identical for pollen from Petunia and Lilium. The proteins synthesized at 27°and 40°C were very similarwithin one species. None of the changes in proteins synthesized at 40°C in pollen showed anycorrelation with heat shock proteins formed in rootlets from Petunia.
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