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Nitrogen fixation by reductively dechlorinating bacteria.

Xiongfei Ju¹, Liping Zhao, Baolin Sun

¹Hefei National Laboratory for Physical Sciences at Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230027, China.

Environmental Microbiology

|March 16, 2007

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Reductively dechlorinating bacteria can fix atmospheric nitrogen (N2 fixation). This process stimulates reductive dechlorination, aiding bioremediation of chlorinated pollutants and influencing anaerobic ecosystem nitrogen levels.

Area of Science:

Environmental microbiology
Biogeochemistry
Bioremediation

Background:

Reductively dechlorinating bacteria play key roles in bioremediation and the global chlorine cycle.
Nitrogen fixation (N2 fixation) is common in various bacterial types.

Purpose of the Study:

To investigate the capacity of reductively dechlorinating bacteria for nitrogen fixation.
To understand the impact of N2 fixation on reductive dechlorination activity.

Main Methods:

Physiological assays to detect N2 fixation.
Molecular techniques to confirm N2 fixation mechanisms.

Main Results:

Physiological and molecular evidence confirmed N2 fixation in reductively dechlorinating bacteria.

Related Experiment Videos

N2 fixation was shown to stimulate reductive dechlorination in certain strains.

Conclusions:

Reductively dechlorinating bacteria possess the capability for nitrogen fixation.
The interaction between N2 fixation and reductive dechlorination is crucial for predicting bioremediation efficacy and understanding anaerobic ecosystem dynamics.