The article discusses the role of an enzymatic "latch" in global carbon storage, specifically in peatlands. Peatlands have historically removed more carbon dioxide from the atmosphere than they release, contributing to 20-30% of the world's soil carbon stock. The anaerobic conditions in peatlands prevent the enzyme phenol oxidase from breaking down phenolic compounds, which inhibit biodegradation. This oxygen limitation on phenol oxidase is crucial in preventing the release of a significant amount of carbon into the atmosphere, potentially exacerbating global warming. The study found that phenol oxidase activity increases under aerobic conditions, and its supplementation can significantly reduce phenolic compound concentrations and enhance hydrolase enzyme activity. The findings suggest that phenol oxidase acts as a critical mechanism to hold in place a vast carbon store, and increased aeration due to climate change could lead to the re-release of CO2.The article discusses the role of an enzymatic "latch" in global carbon storage, specifically in peatlands. Peatlands have historically removed more carbon dioxide from the atmosphere than they release, contributing to 20-30% of the world's soil carbon stock. The anaerobic conditions in peatlands prevent the enzyme phenol oxidase from breaking down phenolic compounds, which inhibit biodegradation. This oxygen limitation on phenol oxidase is crucial in preventing the release of a significant amount of carbon into the atmosphere, potentially exacerbating global warming. The study found that phenol oxidase activity increases under aerobic conditions, and its supplementation can significantly reduce phenolic compound concentrations and enhance hydrolase enzyme activity. The findings suggest that phenol oxidase acts as a critical mechanism to hold in place a vast carbon store, and increased aeration due to climate change could lead to the re-release of CO2.