添加到土壤中的兰和会影响微生物的碳和循环基因
Alin Song1, Zhiyuan Si1, Duanyang Xu2
1State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
Journal of environmental management
|December 3, 2024
概括
稀土元素 (REEs) 通过改变微生物群落和功能基因,显著影响土壤呼吸和循环. 这项研究揭示了REEs如何影响土壤中的碳和代谢,具有广泛的环境影响.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 微生物学 微生物学
- 生物地质化学生物地质化学
背景情况:
- 土壤微生物对碳 (C) 和 (N) 循环和储存至关重要.
- 稀土元素 (REEs) 可以影响土壤微生物过程和植物代谢.
研究的目的:
- 研究REEs对土壤呼吸,矿物N,微生物群落结构和与C和N代谢相关的功能基因的影响.
- 阐明 REEs 影响土壤生物地质化学过程的机制.
主要方法:
- 使用了传统的物理化学方法和基于元基因组的分析.
- 量化土壤呼吸 (CO2和N2O生产) 和土壤矿物N.
- 分析了土壤微生物社区结构和与C和N代谢相关的功能基因丰度.
主要成果:
- 高剂量的和显著增加了CO2和N2O净生产率.
- REEs改变了土壤微生物和参与有机物降解和N循环的功能基因的相对丰度.
- 升高的REEs增加了纤维素,基,葡萄糖,半纤维素,红素和糖分的基因降解,以及N循环基因 (例如,asnB,gdh_K15371,glsA,gs,narl,narJ,narZ,nosZ).
结论:
- REEs对土壤微生物和参与土壤C和N代谢的功能基因有深远的影响.
- 增加土壤呼吸和矿化是对REE暴露的关键反应.
- 这些发现对农业,环境保护和人类健康有重大影响,因为REE对土壤生态系统的影响.
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