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|a 10.1111/nph.20298
|2 doi
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|a eng
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|a Salesse-Smith, Coralie E
|e verfasserin
|4 aut
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|a Increasing Rubisco as a simple means to enhance photosynthesis and productivity now without lowering nitrogen use efficiency
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|c 2024
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|a Text
|b txt
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 17.12.2024
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a © 2024 The Author(s). New Phytologist © 2024 New Phytologist Foundation.
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|a Global demand for food may rise by 60% mid-century. A central challenge is to meet this need using less land in a changing climate. Nearly all crop carbon is assimilated through Rubisco, which is catalytically slow, reactive with oxygen, and a major component of leaf nitrogen. Developing more efficient forms of Rubisco, or engineering CO2 concentrating mechanisms into C3 crops to competitively repress oxygenation, are major endeavors, which could hugely increase photosynthetic productivity (≥ 60%). New technologies are bringing this closer, but improvements remain in the discovery phase and have not been reduced to practice. A simpler shorter-term strategy that could fill this time gap, but with smaller productivity increases (c. 10%) is to increase leaf Rubisco content. This has been demonstrated in initial field trials, improving the productivity of C3 and C4 crops. Combining three-dimensional leaf canopies with metabolic models infers that a 20% increase in Rubisco increases canopy photosynthesis by 14% in sugarcane (C4) and 9% in soybean (C3). This is consistent with observed productivity increases in rice, maize, sorghum and sugarcane. Upregulation of Rubisco is calculated not to require more nitrogen per unit yield and although achieved transgenically to date, might be achieved using gene editing to produce transgene-free gain of function mutations or using breeding
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|a Journal Article
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|a Review
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|a C3 photosynthesis
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|a C4 photosynthesis
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|a Rubisco
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|a food security
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|a future‐proofing agriculture
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|a global change
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|a nitrogen use efficiency
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|a rising CO2
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|a Wang, Yu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Long, Stephen P
|e verfasserin
|4 aut
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|i Enthalten in
|t The New phytologist
|d 1979
|g (2024) vom: 17. Dez.
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|u http://dx.doi.org/10.1111/nph.20298
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