Sulfate Metabolism in C4Flaveria Species Is Controlled by the Root and Connected to Serine Biosynthesis.

摘要: The evolution of C4 photosynthesis led to an increase in carbon assimilation rates and plant growth compared C3 photosynthetic plants. This enhanced growth, turn, affects the requirement for soil-derived mineral nutrients. However, nutrition has scarcely been considered connection with photosynthesis. Sulfur is crucial development, preliminary studies genus Flaveria suggested metabolic differences sulfate along evolutionary trajectory. Here, we show that controlled conditions, foliar accumulation reduced sulfur compounds Cys glutathione (GSH) increased progressing establishment cycle different species. An demand C4Flaveria species reflected high [35S]sulfate incorporation into GSH upon deprivation turnover as a reaction inhibition synthesis. Expression analyses indicate γ-glutamyl recycling Sulfate reduction synthesis seems be preferentially localized roots species, which might linked its colocalization phosphorylated pathway Ser biosynthesis. Interspecies grafting experiments F. robusta (C3) bidentis (C4) revealed root system primarily controls acquisition, synthesis, metabolite allocation study thus shows resulted wide range adaptations metabolism points out need broader on importance