When the plant cell is exposed to the radiation and by the effect of radiation the chloroplast of the cells gets damaged and it will not perform its function.
The sunlight will not be trapped for the process of photosynthesis. This process provides glucose to the plant cell.
The glucose molecule is broken down and the energy that is released gets stored in the ATP molecules in mitochondria.
If there will be no glucose available for the plants then there is no point of having functional mitochondria and The plant will die after a certain period of time.
