O2 competitively inhibits RuBisCO, so forms phosphoglycolate instead of GP only when [CO2] low, its toxic so converted into other organic molecules using ATP, reduces efficiency of photosynthesis, happens as more O2 present and less CO2 due to closing of stoma

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O2 Photorespiration Competitively Inhibits Rubisco Forms Phosphoglycolate Gp

Photorespiration occurs when O2 competitively inhibits RuBisCO, forming phosphoglycolate instead of GP when CO2 concentration is low. This process consumes ATP and reduces photosynthetic efficiency, especially when there are high O2 and low CO2 levels due to stoma closure.

La fotorrespirazione si verifica quando l'O2 inibisce competitivamente la RuBisCO, formando fosfoglicolato invece di GP quando la concentrazione di CO2 è bassa. Questo processo consuma ATP e riduce l'efficienza della fotosintesi, specialmente quando ci sono alti livelli di O2 e bassi livelli di CO2 a causa della chiusura degli stomi.

Front	photorespiration
Back	O2 competitively inhibits RuBisCO, so forms phosphoglycolate instead of GP only when [CO2] low, its toxic so converted into other organic molecules using ATP, reduces efficiency of photosynthesis, happens as more O2 present and less CO2 due to closing of stoma

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