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| DOI | 10.3389/fpls.2024.1367535 |
| Elevated CO2 and ammonium nitrogen promoted the plasticity of two maple in great lakes region by adjusting photosynthetic adaptation | |
| 发表日期 | 2024 |
| ISSN | 1664-462X |
| 起始页码 | 15 |
| 卷号 | 15 |
| 英文摘要 | Introduction: Climate change-related CO2 increases and different forms of nitrogen deposition are thought to affect the performance of plants, but their interactions have been poorly studied. Methods: This study investigated the responses of photosynthesis and growth in two invasive maple species, amur maple (Acer ginnala Maxim.) and boxelder maple (Acer negundo L.), to elevated CO2 (400 mu mol mol(-1) (aCO(2)) vs. 800 mu mol mol(-1) (eCO(2)) and different forms of nitrogen fertilization (100% nitrate, 100% ammonium, and an equal mix of the two) with pot experiment under controlled conditions. Results and discussion: The results showed that eCO(2) significantly promoted photosynthesis, biomass, and stomatal conductance in both species. The biochemical limitation of photosynthesis was switched to RuBP regeneration (related to J(max)) under eCO(2) from the Rubisco carboxylation limitation (related to V-cmax) under aCO(2). Both species maximized carbon gain by lower specific leaf area and higher N concentration than control treatment, indicating robust morphological plasticity. Ammonium was not conducive to growth under aCO(2), but it significantly promoted biomass and photosynthesis under eCO(2). When nitrate was the sole nitrogen source, eCO(2) significantly reduced N assimilation and growth. The total leaf N per tree was significantly higher in boxelder maple than in amur maple, while the carbon and nitrogen ratio was significantly lower in boxelder maple than in amur maple, suggesting that boxelder maple leaf litter may be more favorable for faster nutrient cycling. The results suggest that increases in ammonium under future elevated CO2 will enhance the plasticity and adaptation of the two maple species. |
| 英文关键词 | global change; nitrogen form; amur maple; boxelder maple; photosynthetic adaptation |
| 语种 | 英语 |
| WOS研究方向 | Plant Sciences |
| WOS类目 | Plant Sciences |
| WOS记录号 | WOS:001206985400001 |
| 来源期刊 | FRONTIERS IN PLANT SCIENCE
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/300898 |
| 作者单位 | Zhejiang A&F University; Lakehead University |
| 推荐引用方式 GB/T 7714 | . Elevated CO2 and ammonium nitrogen promoted the plasticity of two maple in great lakes region by adjusting photosynthetic adaptation[J],2024,15. |
| APA | (2024).Elevated CO2 and ammonium nitrogen promoted the plasticity of two maple in great lakes region by adjusting photosynthetic adaptation.FRONTIERS IN PLANT SCIENCE,15. |
| MLA | "Elevated CO2 and ammonium nitrogen promoted the plasticity of two maple in great lakes region by adjusting photosynthetic adaptation".FRONTIERS IN PLANT SCIENCE 15(2024). |
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