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Fig. 4 | BMC Plant Biology

Fig. 4

From: Metabolic model of central carbon and energy metabolisms of growing Arabidopsis thaliana in relation to sucrose translocation

Fig. 4

Schematic circuit of the central carbon and energy metabolisms of Arabidopsis thaliana. The model consists of super-compartment ‘plant’, which includes growing autotrophic sub-compartment ‘mesophyll’, non-growing transport sub-compartment ‘phloem’ and growing heterotrophic sub-compartment ‘root’. The inner space of the super-compartment ‘plant’ was defined as of ‘apoplast’. The ‘mesophyll’ compartment contained ‘plastid’ and ‘mitochondrion’ while the ‘root’ compartment only contained ‘mitochondrion’. Details of metabolic pathways were hidden in order to focus only on the specificity of the sucrose synthesis/translocation in relation of H+-turnover, nutrient and water transport between tissues. hv – light photon; GAP – glyceraldehyde 3-phosphate; suc – sucrose; g6p – glucose-6-phosphate; f6p – fructose-6-phosphate; oaa – oxaloacetate; mal – malate; H + – proton; ETC. – electron transport chain, that performs oxidative phosphorylation; growth – collective set of reactions resulted in formation of biomass; ATPsunt. – ATP synthase; nutrient – nutrients such as NO −3 , HPO 2 −4 , SO 2−4 , SWEET – sucrose efflux transporters, SUC,STP – sucrose-proton symporters

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