Table 3 Potential nitrification and denitrification genes present in rhizosphere of lettuce cultivated in peat substrate (PS) and chitin-amended peat substrates (Chitin).

From: Peat substrate amended with chitin modulates the N-cycle, siderophore and chitinase responses in the lettuce rhizobiome

Enzyme

PS

Chitin

p-value

amoA AOA

0.02 ± 0.01

0.01 ± 0.01

0.17

amoA AOB **

0.21 ± 0.10

0.66 ± 0.21

0.007

napA

1.20 ± 0.05

1.23 ± 0.06

0.53

narG

3.13 ± 0.51

2.68 ± 0.17

0.14

nifH

0.04 ± 0.02

0.06 ± 0.02

0.18

nirK

2.75 ± 0.19

2.82 ± 0.18

0.61

nirS

0.05 ± 0.02

0.06 ± 0.04

0.81

norB

3.81 ± 0.45

3.43 ± 0.23

0.18

nosZ **

1.61 ± 0.18

1.19 ± 0.13

0.0091

nosZ atypical 1 **

1.76 ± 0.09

1.28 ± 0.14

0.0019

nosZ atypical 2 ***

2.69 ± 0.10

2.01 ± 0.17

0.0005

nrfA

0.10 ± 0.01

0.05 ± 0.05

0.08

ureC

3.16 ± 0.18

2.96 ± 0.29

0.30

  1. RPKG normalized mean abundance (±standard error) of genes involved in nitrogen cycle.*p-value < 0.05; **p-value < 0.01; ***p-value < 0.001.
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