Table 1 Relative abundance (mean % ± SD) of Fe(III)-reducing and Fe(II)-oxidizing bacterial taxa recovered from 16S rRNA amplicon sequence variants (ASVs).

From: Genomic evidence that microbial carbon degradation is dominated by iron redox metabolism in thawing permafrost

Soil layer and timepoint

Fe(III)-reduction

Fe(II)-oxidation

 

Rhodoferax sp.

Geobacter sp.

Gallionella sp.

 

Relative abundance (%)

% Change from T0

Relative abundance (%)

% Change from T0

Relative abundance (%)

% Change from T0

Active Layer

 T0

0.1 ± 0.0

–

0.2 ± 0.1

–

0.3 ± 0.2

–

 T7

0.5 ± 0.3

0.4

0.3 ± 0.1

0.1

0.3 ± 0.2

0.0

 T30

10.4 ± 0.8

10.3

0.8 ± 0.6

0.6

8.0 ± 5.2

7.7

Transition zone

 T0

<0.1

–

<0.1

–

<0.1

–

 T7

<0.1

0.0

<0.1

0.0

<0.1

0.0

 T30

62.3 ± 13.7

62.3

<0.1

0.0

1.6 ± 0.8

1.6

Permafrost

 T0

<0.1

–

<0.1

–

<0.1

–

 T7

<0.1

0.0

<0.1

0.0

<0.1

0.0

 T30

62.6 ± 9.1

62.6

<0.1

0.0

3.1 ± 1.7

3.1

  1. Percent change values denote the mean change in relative abundance (%) for each Fe-related taxon compared to incubation time point T0 within each soil layer microbiome. Bold values indicate a significant difference in mean relative abundance for each Fe-related taxon compared to incubation time point T0 within each soil layer microbiome (ANOVA; p < 0.05).
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