Wetlands harbor lactic acid-driven chain elongators.

Area of Science:

• Environmental microbiology
• Biogeochemical cycles
• Wetland science

Background:

• Wetlands are critical global carbon cycling hotspots, influencing atmospheric CO2 and CH4 levels.
• Understanding microbial roles in wetland carbon sequestration and release is crucial for predicting ecosystem responses to climate change.

Purpose of the Study:

• To confirm the presence of chain-elongating organisms in freshwater wetland soils.
• To investigate the potential role of these organisms in carbon cycling and soil organic matter formation.

Main Methods:

• Analysis of microbial communities in freshwater wetland soils.
• Identification of metabolic pathways involved in carbon compound transformation.

Main Results:

• Confirmed the presence of chain-elongating organisms in wetland soils.
• Demonstrated their ability to convert small carbon compounds into larger organic acids (C6-C8).
• Indicated that these organisms may be globally distributed in wetland ecosystems.

Conclusions:

• Chain-elongating organisms are present in wetland soils and contribute to carbon processing.
• The organic acid products formed by these microbes may enhance long-term carbon storage in wetlands.
• Further research is needed to quantify their contribution to wetland carbon cycling and sequestration.