Peroxisomes are one of the microbodies, where the oxidation of organic compounds by oxygen in the presence of light in C3 plants takes place and is called photorespiration.
Photorespiration is the uptake of O2 and release of CO2 in light and results from the biosynthesis of glycolate in chloroplasts and subsequent metabolism of glycolate acid in the same leaf cell. The biochemical mechanism for photorespiration is also called glycolate metabolism. Substrate of photorespiration is glycolate which is 2-C compound therefore it is also called the C2-cycle or glycolate cycle.
Loss of energy occurs during this process. The process of photorespiration involves the involvement of chloroplasts, peroxisomes and mitochondria. RuBP carboxylase also catalyzes another reaction which interferes with the successful functioning of the Calvin cycle.