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. 2018 Nov 13;9:2566. doi: 10.3389/fmicb.2018.02566

FIGURE 4.

FIGURE 4

The abundance of N2O-related functional genes at the seedling, tillering and heading stages in 2016. The copy numbers of archaeal amoA, bacteria amoA, nirK, nirS, nosZ I, and nosZ II genes are exhibited in (A–F), respectively. Error bars present standard deviations of means (n = 3). The different letters (capital letter for the TY soil and lowercase for the BH soil) indicate significant difference among different treatments at each sampling point, which was analyzed by Duncan’s multiple range test (P < 0.05).