Seneweera, S. (2011) Reduced nitrogen allocation to expanding leaf blades suppresses ribulose-1,5-bisphosphate carboxylase/oxygenase synthesis and leads to photosynthetic acclimation to elevated CO2 in rice. Photosynthetica, 49 (1). pp. 145-148. ISSN 0300-3604
Abstract
Net photosynthetic rate (PN) measured at elevated CO2 concentration (Ce), ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco), and nitrogen (N) content in rice leaves decreased significantly after exposure to long term Ce. The reduction in PN, Rubisco, and leaf N at Ce was similar for the last fully expanded leaf blade (LFELB) and expanding leaf blade (ELB). Spatial leaf N content in the ELB was highest in the zone of cell division, sharply declined as cell expansion progressed and gradually increased with cell maturation. Maximum reduction in spatial leaf N and Rubisco content was found at Ce only within cell expansion and maturation zones. The spatial leaf N content correlated well with the amount of Rubisco synthesized during leaf expansion, suggesting that N deposition into the expanding leaf blade may be the key for Rubisco synthesis and possibly photosynthetic acclimation to Ce.
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| Item Type: | Article (Commonwealth Reporting Category C) |
|---|---|
| Refereed: | Yes |
| Item Status: | Live Archive |
| Additional Information: | © 2011 Springer Science+Business Media B.V. Published version deposited in accordance with the copyright policy of the publisher. |
| Faculty / Department / School: | Historic - Faculty of Sciences - Department of Biological and Physical Sciences |
| Date Deposited: | 01 Jul 2014 23:42 |
| Last Modified: | 09 Feb 2017 05:12 |
| Uncontrolled Keywords: | elevated CO2; photosynthesis; ribulose-1,5-bisphosphate carboxylase/oxygenase; rice; spatial nitrogen deposition |
| Fields of Research : | 06 Biological Sciences > 0601 Biochemistry and Cell Biology > 060103 Cell Development, Proliferation and Death 07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070302 Agronomy 03 Chemical Sciences > 0305 Organic Chemistry > 030503 Organic Chemical Synthesis |
| Socio-Economic Objective: | B Economic Development > 82 Plant Production and Plant Primary Products > 8204 Summer Grains and Oilseeds > 820402 Rice |
| Identification Number or DOI: | 10.1007/s11099-011-0006-2 |
| URI: | http://eprints.usq.edu.au/id/eprint/25408 |
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