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An Israeli study announced Tuesday that plants are adjusting their level of photosynthesis to changes in the intensity of sunlight.
According to the study of the Israeli Institute of Science Weizmann, this adjustment is made using a sophisticated detection system similar to the response of the pupils of the human eye.
The mechanism allows the plant to make the best use of sunlight under changing conditions, for example when the clouds alternate or when the wind changes the angle of the leaves relative to the sun.
As plants need light energy to grow, it was generally accepted that photosynthesis increased in proportion to the intensity of sunlight until it reached a limit that would produce "stress" for the plant to activate correction mechanisms that reduce photosynthesis.
However, Israeli scientists, who measured the radiation emitted by the plant at a low level of light, found that photosynthesis increased and gradually weakened.
The study shows that the plant reacts immediately even to very slight sudden increases in light, as if it were preparing for a worst-case scenario: a dangerous increase in light intensity to strike the right balance between safety and security. efficiency.
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