Polyphenols are generally toxic to microorganisms. In peatlands, scientists thought microorganisms avoided this toxicity by degrading polyphenols using an oxygen-dependent enzyme, and thus that low-oxygen conditions inhibit microbes' carbon cycling.
Polyphenols are generally toxic to microorganisms. In peatlands, scientists thought microorganisms avoided this toxicity by degrading polyphenols using an oxygen-dependent enzyme, and thus that low-oxygen conditions inhibit microbes' carbon cycling. However, a new study found that Arctic peatland microorganisms used alternative enzymes, with and without oxygen, to break down polyphenols. This suggests carbon stored in these ecosystems is more at risk than previously thought.
Arctic peatlands store vast amounts of carbon. As global temperatures increase and environments change in response, the stability of the carbon stored in these habitats has emerged as a pressing concern. Researchers delved deep into the soil microbiome, scrutinizing the functions of thousands of microorganisms in an Arctic peatland ecosystem. Contrary to previous assumptions, the study revealed that many microorganisms metabolize polyphenols.
By uncovering this hidden biochemistry, this research pioneers a new understanding of carbon cycling in these climate critical ecosystems. These insights not only expand knowledge of microbial metabolism but also underscore the intricate interplay between microorganisms and carbon dynamics in the face of climate change.
A new study suggests that a small fraction of marine microorganisms are responsible for most of the consumption of oxygen and release of carbon dioxide in the ocean. This surprising discovery came ...
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