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| DOI | 10.1038/s43247-024-01312-y |
| Night-time decline in plant respiration is consistent with substrate depletion | |
| 发表日期 | 2024 |
| EISSN | 2662-4435 |
| 起始页码 | 5 |
| 结束页码 | 1 |
| 卷号 | 5期号:1 |
| 英文摘要 | Understanding the response of plant respiration to climate change is key to determining whether the global land carbon sink continues into the future or declines. Most global vegetation models use a classical growth-maintenance approach, which predicts that nocturnal plant respiration is controlled by temperature only. However, recently published observations of plant respiration show a decline through the night even at constant temperature, which these global models cannot reproduce. Here we assess the role of respiratory substrates in this observed decline by evaluating an alternative model of plant respiration, in which the rate of respiration at constant temperature is instead dependent on the size of available substrate pools. We find that the observed decline in nocturnal respiration is reproduced by a model with just two substrate pools, one fast and one slow. These results demonstrate a need to change the way that plant respiration is represented in global vegetation models, moving to models based on labile pools which represent only a fraction of total plant biomass. These models naturally represent plant acclimation via changing pool-sizes and may have a significant impact on the long-term predictions of the global land carbon sink. Decreased availability of plant substrate can explain the decline in autotrophic respiration at constant temperature during the night, according to a simple respiration model with two carbohydrate pools. |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences |
| WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:001189241100001 |
| 来源期刊 | COMMUNICATIONS EARTH & ENVIRONMENT
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/295943 |
| 作者单位 | University of Exeter; University of Exeter; Aalborg University |
| 推荐引用方式 GB/T 7714 | . Night-time decline in plant respiration is consistent with substrate depletion[J],2024,5(1). |
| APA | (2024).Night-time decline in plant respiration is consistent with substrate depletion.COMMUNICATIONS EARTH & ENVIRONMENT,5(1). |
| MLA | "Night-time decline in plant respiration is consistent with substrate depletion".COMMUNICATIONS EARTH & ENVIRONMENT 5.1(2024). |
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