Biochemistry, Genetics and Molecular Biology
8 years ago

Midday sunlight causing damage to plant photosynthesis, but recovery is possible.

ACTA PHYTOPHISIOLOGICA SINICA
Photoinhibition of Photosynthesis in Sweet Viburnum Leaves Under Natural Conditions
Guo Lian

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The study looked at how strong sunlight can affect the photosynthesis process in Viburnum odoratissimum leaves. They found that exposure to midday sunlight caused a decrease in photosynthetic efficiency, but the leaves were able to recover after being shaded for an hour. The researchers discovered that the decrease in efficiency was due to energy dissipation rather than damage to the photosynthetic system. This suggests that the leaves have a mechanism to protect themselves from the effects of intense sunlight.