In plant physiology, the Warburg effect is the decrease in the rate of photosynthesis due to high oxygen concentrations.[1][2] Oxygen is a competitive inhibitor of carbon dioxide fixation by RuBisCO which initiates photosynthesis. Furthermore, oxygen stimulates photorespiration which reduces photosynthetic output. These two mechanisms working together are responsible for the Warburg effect.[3]
Original source: https://en.wikipedia.org/wiki/Warburg effect (plant physiology).
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