Results of our study show that there are clear differences
between the productions of individual ROS in isolated thylakoids.
The production of H2O2 and O•
2− showed the greatest changes
with the development of barely and the advancement of senescence,
while the production of 1O2 stayed at similar low levels
through the experiment. We can assume that different capacity of
isolated thylakoids for production of ROS during development and
senescence of barley can play important role in ROS signalling.