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| Content Provider | Springer Nature Link |
|---|---|
| Author | Vicente, Rubén Pérez, Pilar Martínez Carrasco, Rafael Gutiérrez, Elena Morcuende, Rosa |
| Copyright Year | 2015 |
| Abstract | Growth in elevated CO$_{2}$ often leads to decreased plant nitrogen contents and down-regulation of photosynthetic capacity. Here, we investigated whether elevated CO$_{2}$ limits nitrogen uptake when nutrient movement to roots is unrestricted, and the dependence of this limitation on nitrogen supply and plant development in durum wheat (Triticum durum Desf.). Plants were grown hydroponically at two N supplies and ambient and elevated CO$_{2}$ concentrations. Elevated CO$_{2}$ decreased nitrate uptake per unit root mass with low N supply at early grain filling, but not at anthesis. This decrease was not associated with higher nitrate or amino acid, or lower non-structural carbohydrate contents in roots. At anthesis, elevated CO$_{2}$ decreased the nitrogen content of roots with both levels of N and that of aboveground organs with high N. With low N, elevated CO$_{2}$ increased N allocation to aboveground plant organs and nitrogen concentration per unit flag leaf area at anthesis, and per unit aboveground dry mass at both growth stages. The results from the hydroponic experiment suggest that elevated CO$_{2}$ restricts nitrate uptake late in development, high N supply overriding this restriction. Increased nitrogen allocation to young leaves at low N supply could alleviate photosynthetic acclimation to elevated CO$_{2}$. |
| Starting Page | 1 |
| Ending Page | 13 |
| Page Count | 13 |
| File Format | |
| ISSN | 01375881 |
| Journal | Acta Physiologiae Plantarum |
| Volume Number | 37 |
| Issue Number | 6 |
| e-ISSN | 18611664 |
| Language | English |
| Publisher | Springer Berlin Heidelberg |
| Publisher Date | 2015-05-27 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Acclimation Elevated CO$_{2}$ Nitrate uptake Nitrogen Nitrogen allocation Triticum durum Plant Physiology Plant Genetics & Genomics Plant Biochemistry Plant Pathology Plant Anatomy/Development Agriculture |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physiology Plant Science Agronomy and Crop Science |
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