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Stimulating photosynthetic processes increases productivity and water use efficiency in the field

Lopez-Calcagno, Patricia E and Brown, Kenny L and Simkin, Andrew J and Fisk, Stuart J and Vialet-Chabrand, Silvere and Lawson, Tracy and Raines, Christine (2020) 'Stimulating photosynthetic processes increases productivity and water use efficiency in the field.' Nature Plants, 6 (8). pp. 1054-1063. ISSN 2055-026X

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Previous studies have demonstrated that independent stimulation of either electron transport or RuBP regeneration can increase the rate of photosynthetic carbon assimilation and plant biomass. In this paper, we present evidence that a multi-gene approach to simultaneously manipulate these two processes provides a further stimulation of photosynthesis. We report on the introduction of the cyanobacterial bifunctional enzyme fructose-1, 6- bisphosphatase/sedoheptulose-1,7-bisphosphatase or overexpression of the plant enzyme sedoheptulose-1,7-bisphosphatase, together with expression of the red algal protein cytochrome c6, and show that a further increase in biomass accumulation under both glasshouse and field conditions can be achieved. Furthermore, we provide evidence that stimulation of both electron transport and RuBP regeneration can lead to enhanced intrinsic water use efficiency under field conditions.

Item Type: Article
Uncontrolled Keywords: SBPase; FBP/SBPase; Calvin-Benson cycle; cytochrome c6; chlorophyll fluorescence imaging; transgenic; electron transport; biomass; water use efficiency
Divisions: Faculty of Science and Health
Faculty of Science and Health > Life Sciences, School of
SWORD Depositor: Elements
Depositing User: Elements
Date Deposited: 12 Aug 2020 07:33
Last Modified: 18 Aug 2022 12:20

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