病毒参与微生物无氧甲氧化介导的动员在米土壤中
Youjing Wang1, Di Tong1, Haodan Yu1
1Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou 310058, China.
Journal of hazardous materials
|December 7, 2024
概括
土壤病毒在甲 (AOM) 无氧氧化过程中在动员中发挥着关键作用. 细胞外病毒增强的释放,而诱导病毒抑制它,影响土生态系统.
科学领域:
- 环境微生物学环境微生物学
- 地质化学 地质化学
- 土壤科学 土壤科学
背景情况:
- 甲无氧氧化 (AOM) 是碳循环中的一个关键过程.
- AOM可以调动 (As),造成环境风险,特别是在土中.
- 土壤病毒在AOM驱动的调动中的作用基本上是未知的.
研究的目的:
- 为了研究土壤病毒对甲介导动员在无氧田土壤微观世界中的影响.
- 阐明病毒影响甲氧化和物种化的机制.
主要方法:
- 使用微生物悬浮的无氧微观宇宙实验.
- 用细胞外自由病毒和米托米辛C (MC) 诱导的病毒进行注射.
- 使用稳定同位素追踪器 (CH4) 来追踪甲的命运.
- 对甲氧化,消耗和物种化 (As(III)) 的分析.
- 评估微生物群落的转移,特别是ANME-2d和Geobacter的丰度.
主要成果:
- 细胞外自由病毒增强了CH4介导的动员,而MC诱导的病毒则抑制了它.
- 这两种病毒类型都抑制了CH4氧化到CO2.
- 细胞外病毒抑制了CH4消费,而MC诱导的病毒增强了它,与ANME-2d的丰富性有关.
- 甲的消耗与的度有很强的相关性,这表明对的减少有影响.
- 细胞外病毒增加了Geobacter的丰富性,导致As(III) 增加了260%.
- 由MC诱导的病毒减少了Geobacter的丰富性,导致As(III) 减少了122%.
结论:
- 土壤病毒在大米土壤中在AOM期间显著影响动员.
- 病毒活动调节甲消耗和氧化途径.
- 像Geobacter这样的特定微生物群的丰富性对于病毒介导的物种化至关重要.
- 这些发现凸显了病毒在土壤生物地球化学循环中的关键,多方面的作用.
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