Plant responses to increased carbon dioxide
Edited book (chapter)
Chapter Title | Plant responses to increased carbon dioxide |
---|---|
Book Chapter Category | Edited book (chapter) |
ERA Publisher ID | 2349 |
Book Title | Crop adaptation to climate change |
Authors | Seneweera, S. (Author) and Norton, R. M. (Author) |
Editors | Yadav, Shyam S., Redden, Robert J., Hatfield, Jerry L., Lotze-Campen, Hermann and Hall, Anthony E. |
Page Range | 198-217 |
Chapter Number | 6 |
Number of Pages | 20 |
Year | 2011 |
Publisher | John Wiley & Sons |
Place of Publication | Chichester, West Sussex. United Kingdom |
ISBN | 9780813820163 |
Digital Object Identifier (DOI) | https://doi.org/10.1002/9780470960929.ch6 |
Web Address (URL) | https://onlinelibrary.wiley.com/doi/10.1002/9780470960929.ch6 |
Abstract | Rising atmospheric carbon dioxide (CO2) enhances carbon uptake in C3 plants and reduces stomatal conductance in C3 and C4 plants. Even though leaf N declines, RuBisCO activity increases so the photosynthetic rate rises as does photosynthetic N use efficiency. The responses show high variability, and while the magnitude of this 'fertilization' effect appears to be confounded with experimental conditions. Growth of C3 plants increased by up to 25% and grain yield somewhat less. C3 plants are more responsive that C4 plants and legumes more responsive than grasses. Photosynthetic acclimation to high CO2 constrains the response of current genotypes. Improved understanding of plant N dynamics and fine and cause of RuBisCO coupled to balancing sink numbers is the basis of developing crops for a carbon rich future. To do so require screening of large numbers of genotypes under high [CO2] and then exploit those traits using modern biotechnology tools. This is to be done against the other abiotic challenges of drought and thermotolerance, as well as responding to a host of new biotic challenges thrown up by changing global climates. |
Keywords | acclimation; elevated CO2; FACE; morphology; nitrogen; photosynthesis; RuBisCO |
ANZSRC Field of Research 2020 | 370201. Climate change processes |
310803. Plant cell and molecular biology | |
370103. Atmospheric aerosols | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Melbourne |
International Plant Nutrition Institute, Australia | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q2737/plant-responses-to-increased-carbon-dioxide
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