C and N allocation on wheat under the effects of depleted, current and elevated [CO2] are modulated by water availability
Although elevated atmospheric [CO2] has substantial indirect effects on vegetation carbon uptake via associated climate change, their dynamics remain unclear. The carbon and nitrogen allocation and partitioning in durum wheat were compared at different [CO2] and different water availability. The aim...
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| Language: | English |
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Elsevier
2024-12-01
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| Series: | Plant Stress |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667064X24003166 |
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| author | Salvador Aljazairi Brigen Manikan Xavier Serrat Salvador Nogués |
| author_facet | Salvador Aljazairi Brigen Manikan Xavier Serrat Salvador Nogués |
| author_sort | Salvador Aljazairi |
| collection | DOAJ |
| description | Although elevated atmospheric [CO2] has substantial indirect effects on vegetation carbon uptake via associated climate change, their dynamics remain unclear. The carbon and nitrogen allocation and partitioning in durum wheat were compared at different [CO2] and different water availability. The aim of this study was to investigate how the impacts of depleted and elevated [CO2] driven climate change on Mediterranean wheat plants under drought conditions. For that reason, double stable isotope labelling using 13CO2 and 15NH4–15NO3 was conducted to follow 13C and 15N allocation and partitioning in the different plant organs. Plants were studied in growth chambers under three different CO2 environments (depleted, current and elevated) and two water availability conditions (well-watered and mild-water-stress). Isotopic 13C and 15N determination, gas exchange analyses and growth parameters were measured.We show that plants subjected to depleted and elevated [CO2] suffered up and down regulation of photosynthesis respectively, but their responses were both modulated by water availability. Depleted [CO2] and drought reduced plant biomass. However, elevated [CO2], show that the initial positive effect of elevated [CO2] on carbon uptake declined rapidly, showing a consequence of physiological acclimation and the inhibition of [Rubisco] and activity, this effect was more evident in combination with drought. In both cases, depleted [CO2] and elevated [CO2] condition modified the C and N allocation compared with current [CO2], overall combined with drought.These results obtained highlight the different C and N management strategies of wheat and provide relevant information about the potential response of plants under global climate change conditions. |
| format | Article |
| id | doaj-art-7908aeb8917e4ed1bbc590f28c5e57d4 |
| institution | OA Journals |
| issn | 2667-064X |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
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| series | Plant Stress |
| spelling | doaj-art-7908aeb8917e4ed1bbc590f28c5e57d42025-08-20T01:58:30ZengElsevierPlant Stress2667-064X2024-12-011410066310.1016/j.stress.2024.100663C and N allocation on wheat under the effects of depleted, current and elevated [CO2] are modulated by water availabilitySalvador Aljazairi0Brigen Manikan1Xavier Serrat2Salvador Nogués3Departament de Biologia Evolutiva, Ecologia i Ciències ambientals, Secció de Fisiologia Vegetal, Universitat de Barcelona, 08028 Barcelona, Catalonia, Spain; Departamento de Ecología, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain; Departamento de Educación de Ciencias Experimentales, Universidad Internacional de la Rioja, UNIR, Spain; Corresponding author at: Departament de Biologia Evolutiva, Ecologia i Ciències ambientals, Secció de Fisiologia Vegetal, Universitat de Barcelona, 08028 Barcelona, Catalonia, Spain.Departament de Biologia Evolutiva, Ecologia i Ciències ambientals, Secció de Fisiologia Vegetal, Universitat de Barcelona, 08028 Barcelona, Catalonia, SpainDepartament de Biologia Evolutiva, Ecologia i Ciències ambientals, Secció de Fisiologia Vegetal, Universitat de Barcelona, 08028 Barcelona, Catalonia, SpainDepartament de Biologia Evolutiva, Ecologia i Ciències ambientals, Secció de Fisiologia Vegetal, Universitat de Barcelona, 08028 Barcelona, Catalonia, SpainAlthough elevated atmospheric [CO2] has substantial indirect effects on vegetation carbon uptake via associated climate change, their dynamics remain unclear. The carbon and nitrogen allocation and partitioning in durum wheat were compared at different [CO2] and different water availability. The aim of this study was to investigate how the impacts of depleted and elevated [CO2] driven climate change on Mediterranean wheat plants under drought conditions. For that reason, double stable isotope labelling using 13CO2 and 15NH4–15NO3 was conducted to follow 13C and 15N allocation and partitioning in the different plant organs. Plants were studied in growth chambers under three different CO2 environments (depleted, current and elevated) and two water availability conditions (well-watered and mild-water-stress). Isotopic 13C and 15N determination, gas exchange analyses and growth parameters were measured.We show that plants subjected to depleted and elevated [CO2] suffered up and down regulation of photosynthesis respectively, but their responses were both modulated by water availability. Depleted [CO2] and drought reduced plant biomass. However, elevated [CO2], show that the initial positive effect of elevated [CO2] on carbon uptake declined rapidly, showing a consequence of physiological acclimation and the inhibition of [Rubisco] and activity, this effect was more evident in combination with drought. In both cases, depleted [CO2] and elevated [CO2] condition modified the C and N allocation compared with current [CO2], overall combined with drought.These results obtained highlight the different C and N management strategies of wheat and provide relevant information about the potential response of plants under global climate change conditions.http://www.sciencedirect.com/science/article/pii/S2667064X24003166CO2Climate changeCarbon and nitrogen allocationStable isotopesDrought |
| spellingShingle | Salvador Aljazairi Brigen Manikan Xavier Serrat Salvador Nogués C and N allocation on wheat under the effects of depleted, current and elevated [CO2] are modulated by water availability Plant Stress CO2 Climate change Carbon and nitrogen allocation Stable isotopes Drought |
| title | C and N allocation on wheat under the effects of depleted, current and elevated [CO2] are modulated by water availability |
| title_full | C and N allocation on wheat under the effects of depleted, current and elevated [CO2] are modulated by water availability |
| title_fullStr | C and N allocation on wheat under the effects of depleted, current and elevated [CO2] are modulated by water availability |
| title_full_unstemmed | C and N allocation on wheat under the effects of depleted, current and elevated [CO2] are modulated by water availability |
| title_short | C and N allocation on wheat under the effects of depleted, current and elevated [CO2] are modulated by water availability |
| title_sort | c and n allocation on wheat under the effects of depleted current and elevated co2 are modulated by water availability |
| topic | CO2 Climate change Carbon and nitrogen allocation Stable isotopes Drought |
| url | http://www.sciencedirect.com/science/article/pii/S2667064X24003166 |
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