Rhizosphere influence on microbial functions: consequence for temperature sensitivity of soil organic matter decomposition at early stage of plant growth
文献类型：期刊论文
| 作者 | Zhou,Jie; Liu,Chunyan; Shi,Lingling; Zamanian,Kazem |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2023 |
| 关键词 | Rhizosphere priming effect Temperature sensitivity Soil organic carbon Soil warming Phospholipid fatty acid C-13 natural abundance CARBON-USE EFFICIENCY N AVAILABILITY COMMUNITY BIOMASS MINERALIZATION MICROORGANISMS RESPIRATION SEQUESTRATION MECHANISMS EXTRACTION |
| ISSN号 | 1573-5036 |
| DOI | 10.1007/s11104-023-06258-2 |
| 英文摘要 | Aims Accurate predictions of soil carbon (C) feedbacks to climate change depend on an improved understanding of temperature sensitivity (Q(10)) of soil organic matter (SOM) decomposition. Although rhizosphere processes play a critical role in SOM decomposition, the rhizosphere effects on Q(10 )and their underlying microbial mechanisms remain unclear.Methods Natural abundance approach was used to measure the rhizosphere priming effect (RPE) of maize under two temperature regimes in a 50-day pot experiment. We further determined the impact of rhizosphere process on the Q(10 )of SOM decomposition. Enzymatic kinetics, microbial growth rate, as well as C-13-phospholipid fatty acid (C-13-PLFA) biomarkers were identified to evaluate the responses of microbial activity.Results Warming relative to ambient increased the plant-derived C input, stimulated microbial growth rate, and enzyme activities by 87%, 23%, and 7-18%, respectively. Consequently, warming increased the RPE of maize up to 1-folds, and further caused a larger net C loss as compared to ambient after 50 days of transplanting. Gram negative bacteria and actinobacteria were important groups controlling the RPE, which was supported by the positive correlations between RPE and the abundance of gram negative and actinobacteria. Furthermore, we concluded a literature review and the results were consistent with our case study, where the presence of roots increased the temperature sensitivity of SOM decomposition by 0.17-0.56. This was because rhizodeposition activated microorganisms which produce more enzymes and increase SOM-derived substrate availability. This indicates that planted soils face higher risks of C emissions under future climate warming.Conclusions Overall, root-soil interactions via RPE play a pivotal role in determining the temperature sensitivity of SOM decomposition. |
| WOS记录号 | WOS:001065211200005 |
| 源URL | [http://ir.kib.ac.cn/handle/151853/74818]  |
| 专题 | 中国科学院昆明植物研究所 |
| 推荐引用方式 GB/T 7714 | Zhou,Jie,Liu,Chunyan,Shi,Lingling,et al. Rhizosphere influence on microbial functions: consequence for temperature sensitivity of soil organic matter decomposition at early stage of plant growth[J]. PLANT AND SOIL,2023. |
| APA | Zhou,Jie,Liu,Chunyan,Shi,Lingling,&Zamanian,Kazem.(2023).Rhizosphere influence on microbial functions: consequence for temperature sensitivity of soil organic matter decomposition at early stage of plant growth.PLANT AND SOIL. |
| MLA | Zhou,Jie,et al."Rhizosphere influence on microbial functions: consequence for temperature sensitivity of soil organic matter decomposition at early stage of plant growth".PLANT AND SOIL (2023). |
入库方式： OAI收割
来源：昆明植物研究所
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