Fig. 6: Effects of limiting the mitochondrial terminal oxidase of the N2-fixing zone. | Nature Communications

Fig. 6: Effects of limiting the mitochondrial terminal oxidase of the N2-fixing zone.

From: Genome-scale metabolic reconstruction of the symbiosis between a leguminous plant and a nitrogen-fixing bacterium

Fig. 6

FBA simulations were run with a modified version of ViNE in which bacteroid metabolism could be supported by sucrose in addition to C4-dicarboxylates. No overall limit on oxygen usage of the nodule was set during the simulations, but a limit was set on the activity of the mitochondrial terminal oxidase of the zone III nodule tissue. a The effect on plant growth rate of varying the mitochondrial terminal oxidase of the zone III nodule tissue. b The effect on specified flux rates of varying the mitochondrial terminal oxidase of the zone III nodule tissue. Red – the sucrose uptake rate of N2-fixing bacteroids; blue – the uptake rate of C4-dicarboxylates of N2-fixing bacteroids; purple – the flux rate of the terminal oxidase of N2-fixing bacteroids. The dashed line indicates the mitochondrial terminal oxidase flux rate below which no sucrose is used by the bacteroids.

Back to article page