On the basis of literature and my calculations it was established that a chlorophyll (Chl) particle anchored with a phytol chain to the thylakoid membrane takes up about 1 nm2 of the surface area. At an irradiance of 287 W m-2 the leaves of cabbage seedlings become saturated with photosynthetically active radiation (PAR) thus reaching the maximum photosynthetic rate of 100 µg(C) m-2 s-1, that is 5 CO2 molecules per 1 nm2 per second, and the maximum power with which the Chl particle supplies the process of photosynthesis is 15 aJ.
The 02 ’ production in isolated plastids and their ability to detoxify SO2 increased duiing greening of oat plants and was much stronger in those with working photosynthetic apparatus than in etiolated ones. The sulphite oxidation level was stimulated using superoxide dismutase inhibitors.