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Exaptation of ancestral cell-identity networks enables C4 photosynthesis [PDF]
NatureC4 photosynthesis is used by the most productive plants on the planet, and compared with the ancestral C3 pathway, it confers a 50% increase in efficiency1. In more than 60 C4 lineages, CO2 fixation is compartmentalized between tissues, and bundle-sheath
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Unicellular C4 photosynthesis in a marine diatom
Nature, 2000Nearly 50 years ago, inorganic carbon was shown to be fixed in microalgae as the C3 compound phosphoglyceric acid. The enzyme responsible for C3 carbon fixation, ribulose-1,5-bisphosphate carboxylase (Rubisco), however, requires inorganic carbon in the form of CO2 (ref.
J R, Reinfelder +2 more
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Wheat genomics: Seeds of C4 photosynthesis
Nature Plants, 2016A recent survey of transcript abundance in wheat grains found accumulation of mRNAs encoding key enzymes of C4 photosynthesis. However, this is not the same as showing that the C4 pathway operates in these tissues.
Hibberd, Julian, Furbank, Robert T
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Russ Monson and the evolution of C4 photosynthesis
Oecologia, 2021Early in his career, Russ Monson produced a series of influential eco-physiological papers that helped lay the foundation for the study of C4 plant evolution. Among the most important was a 1984 paper with Maurice Ku and Gerry Edwards that outlined the pathway for the evolutionary bridge from C3 to C4 photosynthesis.
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Decoding the evolution of C4 photosynthesis
Trends in Plant ScienceC4 photosynthesis underpins the remarkable productivity of certain crops, including maize and sorghum. How the C4 pathway emerged from ancestral C3 relatives has been unclear. Swift et al. have deciphered how a pre-existing cis-regulatory code for bundle-sheath gene expression was conscripted to enable C4 photosynthesis.
Syed Adeel Zafar, Julia Bailey-Serres
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1998
The method of screening for mutants was based on that originally described by Somerville and Ogren, who isolated a range of mutants of Arabidopsis thaliana (1) that lacked key enzymes of the photorespiratory carbon and nitrogen cycle (2). Somerville and Ogren argued that in C3 plants grown at elevated concentrations of CO2 glycollate-2-P formation ...
Leegood, R. C. +4 more
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The method of screening for mutants was based on that originally described by Somerville and Ogren, who isolated a range of mutants of Arabidopsis thaliana (1) that lacked key enzymes of the photorespiratory carbon and nitrogen cycle (2). Somerville and Ogren argued that in C3 plants grown at elevated concentrations of CO2 glycollate-2-P formation ...
Leegood, R. C. +4 more
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Oligomeric enzymes in the C4 pathway of photosynthesis
Photosynthesis Research, 1990This review deals with the factors controlling the aggregation-state of several enzymes involved in C4 photosynthesis, namely phosphoenolpyruvate carboxylase, NAD-and NADP-malic enzyme, NADP-malic dehydrogenase and pyruvate, phosphate dikinase and its regulatory protein.
F E, Podesta, A A, Iglesias, C S, Andreo
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Mitochondria as a site of C4 acid decarboxylation in C4-pathway photosynthesis
Archives of Biochemistry and Biophysics, 1975Abstract One group of C4, species utilize a NAD-malic enzyme to decarboxylate C4 acids. This enzyme, together with a major isoenzyme of aspartate aminotransferase and a NAD-malate dehydrogenase, is localized in the mitochondria of the bundle sheath cells and the following pathway for C4, acid decarboxylation has been proposed: aspartate ...
T, Kagawa, M D, Hatch
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The Regulation of C4 Photosynthesis
1997Publisher Summary The C4 pathway is an adjunct to the Benson–Calvin cycle. It occurs only in conjunction with structural modifications that allow it to operate as a CO2–concentrating mechanism and, therefore, to suppress photorespiration.
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C4 photosynthesis in the vegetation of Aldabra Atoll
Oecologia, 1979The occurrence of the C4 photosynthetic system, based upon an examination of leaf anatomy, of nearly all species of the vegetation of Aldabra Atoll, western Indian Ocean, is reported. About 19% of the flora has the C4 system. It only occurs in herbaceous plants, which grow either in grasslands or as an understorey to tall shrubs. Both C3 and C4 species
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