A new study found that when rice leaves are kept in the dark, their photosynthesis process and chlorophyll levels decrease. The photosystem II and cytochrome f levels also drop, but photosystem I remains stable. The antenna part of photosystem I breaks down, causing a shift in its fluorescence. Some proteins from the antenna complexes disappear during darkness. This suggests that the photosystem I and II complexes are disassembled differently under dark conditions.