Table 2 Relative expression of nosZ in ΔnasS strains under N2O- and NO3 - -respiring conditions.

From: Bradyrhizobium ottawaense efficiently reduces nitrous oxide through high nosZ gene expression

 

N2O-respiring condition

NO3--respiring condition

Wild type†

ΔnasS

nasS deletion effects

Wild type†

ΔnasS

nasS deletion effects

B. diazoefficiens USDA110T

1.0 ± 0.48

3.4 ± 1.7

3.4*

1.0 ± 0.7

1.1 ± 10.3

1.1 (ns)

B. ottawaense SG09

211.5 ± 58

430.2 ± 164

2.03*

109 ± 63

89.3 ± 42.8

0.82 (ns)

B. ottawaense OO99T

163.5 ± 81

337.4 ± 132

2.06*

119 ± 64

141 ± 53

1.18 (ns)

  1. Expression is shown relative to B. diazoefficiens USDA110T that is set to 1.0 and normalized by sigA gene expression.
  2. Numbers represent the mean values with standard error of more than three independent experiments.
  3. ns, not significant.
  4. †The data for wild type are taken from Table 1.
  5. *Significant difference between wild type and ΔnasS strains at p < 0.05, n = 4–6, by t-test.
Back to article page