Photosynthetic acclimation to CO2 enrichment related to ribulose-1,5-bisphosphate carboxylation limitation in wheat |
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| Authors: | D-Y Zhang G-Y Chen J Chen Z-H Yong J-G Zhu and D-Q Xu |
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| Institution: | (1) Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences; Graduate School of the Chinese Academy of Sciences, Shanghai, 200032, China;(2) State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China |
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| Abstract: | Net photosynthetic rate (P
N) measured at the same CO2 concentration, the maximum in vivo carboxylation rate, and contents of ribulose-1,5-bisphosphate (RuBP) carboxylase/oxygenase (RuBPCO) and RuBPCO activase were
significantly decreased, but the maximum in vivo electron transport rate and RuBP content had no significant change in CO2-enriched EC, about 200 μmol mol−1 above the ambient CO2 concentration (AC)] wheat leaves compared with those in AC grown wheat leaves. Hence photosynthetic acclimation in wheat
leaves to EC is largely due to RuBP carboxylation limitation. |
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| Keywords: | Additional" target="_blank">Additional maximum in vivo electron transport rate net photosynthetic rate ribulose-1 5-bisphosphate carboxylase/oxygenase activase RuBP regeneration limitation sucrose-phosphate synthase Triticum |
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