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Table 2 Ratio of the phyla Firmicutes vs. Bacteroidetes in biogas fermenters and herbivorous animals

From: Deep metagenome and metatranscriptome analyses of microbial communities affiliated with an industrial biogas fermenter, a cow rumen, and elephant feces reveal major differences in carbohydrate hydrolysis strategies

Microbiome/community

Firmicutes/Bacteroidetes phyla ratio

Reference/data source

16S amplicon-based analysis

Metagenome-based analysis

Biogas fermenter

2.4:1

5.2:1

This study

Biogas fermenter

4.7:1

[25]

Biogas fermenter (dry fermentation)

4.1:1

[3]

Biogas fermenter (wet fermentation)

3.9:1

[3]

Biogas fermenter

9.6:1

5.9:1

[4]

Biogas fermenter

9.6:1

[2]

Mean

6:1

5.6:1

 

Asian elephant feces

0.8:1

1.6:1

[15]

Switchgrass incubated in cow rumen

1.5:1

[23]

Rumen of a hay-fed cow

0.8–1.7:1

[14]

Svalbard reindeer Rumen

0.5:1

0.4:1

[18]

White rhinoceros feces

1.6–2.7:1

[24]

Rex rabbit feces

0.8–1.3:1

[16]

Rumen of a pasture-fed sheep

0.3–0.5:1

[14]

Giraffe rumen

1.6:1

[17]

Mean

1:1

1.2:1

 
  1. The data are based on the data sets published in the indicated references or on data produced in this study