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Soil bacteria respire more CO2 after sugar-free meals - EurekAlert

Researchers tracked how plant matter moves through bacteria’s metabolism. Microbes respire three times as much carbon dioxide (CO2) from non-sugar carbons from lignin compared to sugar from cellulose. Although microbes consume both types of plant matter at the same time, each type enters a different metabolic pathway. Findings could improve predictions of how climate-dependent changes in soil carbon types will affect microbial CO2 production.

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