Fig. 1: Three enzyme allocation scenarios (A0, A1, and A2) to produce six enzyme groups catalyzing inorganic nitrogen (N) transformations in the Microbial-ENzyme Decomposition (MEND) model.
From: Exploring the competitive dynamic enzyme allocation scheme through enzyme cost minimization
a, b Comparison among simulated (A0, A1, and A2) and observed (OBS) biological N fixation flux and plant N uptake flux, respectively. c, d Total inorganic N flux (Flux-Ninorg) and total production of enzymes operating on inorganic N (Enz-Ninorg) as per the three scenarios. Flux-Ninorg is the sum of the fluxes of biological N fixation, nitrification and denitrification processes. Enz-Ninorg includes six enzyme groups catalyzing inorganic N cycling, i.e., nitrogenases, ammonia oxidases, nitrate reductases, nitrite reductases, nitric oxide reductases, and nitrous oxide reductases. Different letters (a, b, and c) denote significant difference (p-value < 0.001) by the Wilcoxon signed rank test. Error bars in a, b are standard deviations (n = 24). Percentage labeled in red denotes the percent bias between simulated and observed average values.
