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Metagenomic analysis for the microbial consortium of anaerobic CO oxidizers.

Guo Y, Xu J, Yuan Z, Li X, Zhou W, Xu H, Liang C, Zhang Y, Zhuang X - Microb Biotechnol (2015)

Bottom Line: Reads from the hypervariable V6 region in the bacterial 16s rDNA were aligned and finally clustered into operational taxonomic units (OTUs).Alphaproteobacteria, clostridia, betaproteobacteria and actinobacteria were the most abundant groups, while alphaproteobacteria, betaproteobacteria and actinobacteria were variable groups.CO consumption and production efficiency of the microbial consortium were studied.

View Article: PubMed Central - PubMed

Affiliation: Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, China.

No MeSH data available.


Related in: MedlinePlus

Predicted pathways inside microbial systems for conversion of carbon monoxide to carbon dioxide, methane and acids.
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fig02: Predicted pathways inside microbial systems for conversion of carbon monoxide to carbon dioxide, methane and acids.

Mentions: The reaction for converting CO substrates to CO2 by CODHs might be the main rate-limiting step. Electrons produced in this step could then be used for the methyl branch of the Wood–Ljungdahl pathway and reduce CoB-SS-CoM to HSCoB. Thus, when CO2 becomes the only substrate, few active electrons are available and extra electron donors should be added to enhance efficiency in the final stable stage. It was reported that CO2 could be utilized by microalgae, macroalgae or cyanobacteria instead of a CO oxidizer (Farrelly et al., 2013), before or after selective separation of CH4. The estimated main pathways and enzymes inside microbial systems for conversion of CO to CO2, CH4 and acids are illustrated in Fig. 2.


Metagenomic analysis for the microbial consortium of anaerobic CO oxidizers.

Guo Y, Xu J, Yuan Z, Li X, Zhou W, Xu H, Liang C, Zhang Y, Zhuang X - Microb Biotechnol (2015)

Predicted pathways inside microbial systems for conversion of carbon monoxide to carbon dioxide, methane and acids.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4554472&req=5

fig02: Predicted pathways inside microbial systems for conversion of carbon monoxide to carbon dioxide, methane and acids.
Mentions: The reaction for converting CO substrates to CO2 by CODHs might be the main rate-limiting step. Electrons produced in this step could then be used for the methyl branch of the Wood–Ljungdahl pathway and reduce CoB-SS-CoM to HSCoB. Thus, when CO2 becomes the only substrate, few active electrons are available and extra electron donors should be added to enhance efficiency in the final stable stage. It was reported that CO2 could be utilized by microalgae, macroalgae or cyanobacteria instead of a CO oxidizer (Farrelly et al., 2013), before or after selective separation of CH4. The estimated main pathways and enzymes inside microbial systems for conversion of CO to CO2, CH4 and acids are illustrated in Fig. 2.

Bottom Line: Reads from the hypervariable V6 region in the bacterial 16s rDNA were aligned and finally clustered into operational taxonomic units (OTUs).Alphaproteobacteria, clostridia, betaproteobacteria and actinobacteria were the most abundant groups, while alphaproteobacteria, betaproteobacteria and actinobacteria were variable groups.CO consumption and production efficiency of the microbial consortium were studied.

View Article: PubMed Central - PubMed

Affiliation: Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, China.

No MeSH data available.


Related in: MedlinePlus