Detached Nicotiana rustica leaves were exposed for 2 minutes to temperatures in the range 36° to 51°C. Above 45°C, 14CO2 fixation was reduced by half as compared with controls. The fall in 14CO2 fixation continued for 2 1/2 h. Recovery was completed 45 h after the treatment. Above 45°C there was an increase in the labeled cationic and anionic fractions and a decrease in the neutral fractions, both increase and decrease being associated with the impaired CO2 fixation. However, these changes in products were also demonstrated when leaves were exposed to the high temperature after labeling.
|Number of pages||4|
|State||Published - 1 Jan 1972|