This invention relates to methods for increasing carbon fixation and/or increasing biomass production in a plant, comprising: introducing into a plant, plant part, and/or plant cell one or more heterologous polynucleotides encoding polypeptides having the enzyme activity of succinyl CoA synthetase, 2-oxoglutarate:ferredoxin oxidoreductase, 2-oxoglutarate carboxylase, oxalosuccinate reductase and isocitrate lyase to produce a stably transformed plant, plant part, and/or plant cell expressing the one or more heterologous polynucleotides. The methods further comprise introducing into a plant, plant part or plant cell heterologous polynucleotides encoding polypeptides having the enzyme activity of glyoxylate carboligase and tartronic semialdehyde reductase, and/or heterologous polynucleotides encoding a superoxide reductase from an archaeon species, an aquaporin and/or an inhibitor of cell wall invertase inhibitor. Additionally, transformed plants, plant parts, and/or plant cells are provided as well as products produced from the transformed plants, plant parts, and/or plant cells.
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 This invention was supported in part by funding provided under Grant No 2009-35318-05024 from the United States Department of Agriculture (USDA), and Grant No DE-AR0000207 from the United States Department of Energy (DOE). The United States government has certain rights in this invention.