在青海-西藏高原永久土退化期间,潜在的致病细菌的转移
Binglin Zhang1, Baogui Zhang2, Yeteng Xu1
1Key Laboratory of Cryospheric Science and Frozen Soil Engineering, Yulong Snow Station of Cryosphere and Sustainable Development, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, China; State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; Key Laboratory of Extreme Environmental Microbial Resources and Engineering, Gansu Province 730000, China.
The Science of the total environment
|October 9, 2024
概括
永久土融化释放病原体,改变微生物群落,并构成公共卫生风险. 土壤水分是关键,大多数病原体源自外部,而不是来自永久土本身.
科学领域:
- 环境微生物学环境微生物学
- 微生物生态学 微生物生态学
- 公共卫生科学 公共卫生科学
背景情况:
- 永久土储存着古老的微生物,并作为潜在病原体的储存库.
- 加快气候变化和永久土融化增加了病原体释放的风险,影响生态系统和公共卫生.
- 了解永久土退化期间病原体社区的变化对于风险评估至关重要.
研究的目的:
- 分析永久土土壤中潜在的致病细菌的组成和数量.
- 研究永久土融化的不同阶段致病性细菌群落的变化.
- 确定影响病原体社区及其来源的关键环境因素.
主要方法:
- 定量PCR (qPCR) 用于确定病原体的丰富性.
- Illumina高通量测序用于分析细菌社区组成.
- 包括ANOSIM和Procrustes在内的统计分析用于社区差异和环境影响.
- 源Tracker2用于追踪致病性细菌的起源.
主要成果:
- 在最初的永久土退化期间,病原体数量下降,但社区多样性显示出U形趋势.
- 确定了216种潜在的致病细菌物种,包括动物,动物病原体和植物病原体.
- 土壤湿度是主要的环境驱动因素,其次是TDS,土壤有机碳和总.
- 大多数潜在的病原体来自外部来源,而不是永久土本身.
结论:
- 永久土的退化显著改变了致病性细菌群落,在每个阶段都存在不同的生物安全风险.
- 永久土解导致的病原体的释放和再分布,造成了公众健康的担忧.
- 持续的监测和积极的管理对于减轻与永久土融化和病原体释放相关的风险至关重要.
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