Key Laboratory of Urban Environment and Health, Ningbo Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, 361021, Xiamen, China.
University of Chinese Academy of Sciences, 100049, Beijing, China.
Nat Commun. 2022 Oct 12;13(1):6027. doi: 10.1038/s41467-022-33771-2.
Soil viruses remain understudied when compared to virus found in aquatic ecosystems. Here, we investigate the ecological patterns of soil viral communities across various land use types encompassing forest, agricultural, and urban soil in Xiamen, China. We recovered 59,626 viral operational taxonomic units (vOTUs) via size-fractioned viromic approach with additional mitomycin C treatment to induce virus release from bacterial fraction. Our results show that viral communities are significantly different amongst the land use types considered. A microdiversity analysis indicates that selection act on soil vOTUs, resulting in disparities between land use associated viral communities. Soil pH is one of the major determinants of viral community structure, associated with changes of in-silico predicted host compositions of soil vOTUs. Habitat disturbance and variation of soil moisture potentially contribute to the dynamics of putative lysogenic vOTUs. These findings provide mechanistic understandings of the ecology and evolution of soil viral communities in changing environments.
与水生生态系统中发现的病毒相比，土壤病毒的研究仍不够充分。在这里，我们调查了中国厦门不同土地利用类型（包括森林、农业和城市土壤）的土壤病毒群落的生态模式。我们通过大小分离的病毒组学方法回收了 59626 个病毒操作分类单元（vOTU），并额外使用丝裂霉素 C 处理以从细菌部分诱导病毒释放。我们的结果表明，所考虑的土地利用类型之间的病毒群落有显著差异。微观多样性分析表明，选择作用于土壤 vOTU，导致与土地利用相关的病毒群落之间存在差异。土壤 pH 是病毒群落结构的主要决定因素之一，与土壤 vOTU 中计算机预测宿主组成的变化相关。生境干扰和土壤水分的变化可能会导致潜在溶源 vOTU 的动态变化。这些发现为了解变化环境中土壤病毒群落的生态和进化提供了机制上的认识。
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