Expression of cyanobacterial FBP/SBPase in soybean prevents yield depression under future climate conditions
Journal Article
·
· Journal of Experimental Botany
- United States Department of Agriculture, Urbana, IL (United States). Global Change and Photosynthesis Research Unit, Agricultural Research Service; University of Illinois at Urbana-Champaign, Urbana, IL (United States). Carl R. Woese Institute for Genomic Biology; DOE/OSTI
- University of Illinois at Urbana-Champaign, Urbana, IL (United States). Carl R. Woese Institute for Genomic Biology
- Iowa State University, Ames, IA (United States). Department of Agronomy
- United States Department of Agriculture, Urbana, IL (United States). Global Change and Photosynthesis Research Unit, Agricultural Research Service; University of Illinois at Urbana-Champaign, Urbana, IL (United States). Carl R. Woese Institute for Genomic Biology
- University of Nebraska-Lincoln, Lincoln, NE (United States). Center for Plant Science Innovation
- United States Department of Agriculture, Urbana, IL (United States). Global Change and Photosynthesis Research Unit, Agricultural Research Service; University of Illinois at Urbana-Champaign, Urbana, IL (United States). Carl R. Woese Institute for Genomic Biology; University of Lancaster, Lancaster (United Kingdom). Lancaster Environment Centre
- United States Department of Agriculture, Urbana, IL (United States). Global Change and Photosynthesis Research Unit, Agricultural Research Service; University of Illinois at Urbana-Champaign, Urbana, IL (United States). Carl R. Woese Institute for Genomic Biology; University of Illinois at Urbana-Champaign, Urbana, IL (United States). Departments of Plant Biology and Crop Sciences
Predictions suggest that current crop production needs to double by 2050 to meet global food and energy demands. Based on theory and experimental studies, overexpression of the photosynthetic enzyme sedoheptulose-1,7-bisphosphatase (SBPase) is expected to enhance C3 crop photosynthesis and yields. Here we test how expression of the cyanobacterial, bifunctional fructose-1,6/sedoheptulose-1,7-bisphosphatase (FBP/SBPase) affects carbon assimilation and seed yield (SY) in a major crop (soybean, Glycine max). For three growing seasons, wild-type (WT) and FBP/SBPase-expressing (FS) plants were grown in the field under ambient (400 μmol mol-1) and elevated (600 μmol mol-1) CO2 concentrations [CO2] and under ambient and elevated temperatures (+2.7 °C during daytime, +3.4 °C at night) at the SoyFACE research site. Across treatments, FS plants had significantly higher carbon assimilation (4–14%), Vc,max (5–8%), and Jmax (4–8%). Under ambient [CO2], elevated temperature led to significant reductions of SY of both genotypes by 19–31%. However, under elevated [CO2] and elevated temperature, FS plants maintained SY levels, while the WT showed significant reductions between 11% and 22% compared with plants under elevated [CO2] alone. These results show that the manipulation of the photosynthetic carbon reduction cycle can mitigate the effects of future high CO2 and high temperature environments on soybean yield.
- Research Organization:
- Oak Ridge Associated Univ., Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC05-06OR23100
- OSTI ID:
- 1625388
- Journal Information:
- Journal of Experimental Botany, Journal Name: Journal of Experimental Botany Journal Issue: 3 Vol. 68; ISSN 0022-0957
- Publisher:
- Oxford University PressCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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