Summary
We generated and analyzed transgenic tobacco plants with enhanced activities of fructose-l,6-bisphosphatase (FBPase) and/or sedoheptulose-l,7-bisphosphatase (SBPase) in the chloroplasts. The photosynthetic CO2 fixation and the final dry matter under atmospheric conditions (360 ppm CO2) in the transgenic plants were increased compared with those in the wild-type plants. Levels of the intermediate compounds in the Calvin cycle and the accumulation of carbohydrates were also higher than those in the wild-type plants. The transgenic tobacco also increased in the initial activity of Rubisco compared with that in the wild-type plants. These data suggest that both FBPase and SBPase involved in the regeneration of RuBP seem to be one of the limiting factors that participate in the regulation of the carbon flow through the Calvin cycle and the determination of the partitioning of carbon to end products.
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© 2005 Springer-Verlag Tokyo
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Tamoi, M., Shigeoka, S. (2005). Improvement of photosynthesis in higher plants. In: Omasa, K., Nouchi, I., De Kok, L.J. (eds) Plant Responses to Air Pollution and Global Change. Springer, Tokyo. https://doi.org/10.1007/4-431-31014-2_16
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DOI: https://doi.org/10.1007/4-431-31014-2_16
Publisher Name: Springer, Tokyo
Print ISBN: 978-4-431-31013-6
Online ISBN: 978-4-431-31014-3
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