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Deutsche Photorespiration {f} [biochem.] Synonyme

Englische photorespiration Synonyme

photorespiration Definition

photorespiration Bedeutung

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Photorespiration refers to a process in plant metabolism where the enzyme RuBisCO oxygenates RuBP, causing some of the energy produced by photosynthesis to be wasted. The desired reaction is the addition of carbon dioxide to RuBP , a key step in the Calvin?Benson cycle, however approximately 25% of reactions by RuBisCO instead add oxygen to RuBP , creating a product that cannot be used within the Calvin?Benson cycle. This process reduces the efficiency of photosynthesis, potentially reducing photosynthetic output by 25% in C3 plants. Photorespiration involves a complex network of enzyme reactions that exchange metabolites between chloroplasts, leaf peroxisomes and mitochondria.

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