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Yoshiyuki Nakano, Kozi Asada, Spinach chloroplasts scavenge hydrogen peroxide on illumination, Plant and Cell Physiology, Volume 21, Issue 8, December 1980, Pages 1295–1307, https://doi.org/10.1093/oxfordjournals.pcp.a076128
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Abstract
Intact spinach chloroplasts isolated by the modified silica sol density centrifugation scavenged H2O2 on illumination at a rate about 3-fold that of bicarbonate-dependent O2-evolution. Accompanying the disappearance of 1 mole of H2O2 is the evolution of a half mole of O2. The photoscavenging of H2O2 was inhibited by 3(3,4-dichloro-phenyl)-l, l-dimethylurea, cyanide and azide. These results indicate that in chloroplasts H2O2 is reduced to H2O by a cyanide and azide-sensitive peroxidase using a photoreductant as an electron donor.