Impact of Virus-Mediated Modifications in Bacterial Communities on the Accumulation of Soil Organic Carbon

文献类型： 外文期刊

第一作者： Liu, Mingfeng

作者： Liu, Mingfeng;Zhou, Guixiang;Zhang, Congzhi;Chen, Lin;Ma, Donghao;Zhang, Lijun;Zhang, Jiabao;Jia, Chunhua;Ma, Ling;Zhang, Lijun

作者机构：

关键词： auxiliary metabolic genes; carbon cycling; lifestyle; soil virus; virus-host interactions

期刊名称：ADVANCED SCIENCE （ 影响因子：14.1； 五年影响因子：15.6 ）

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年卷期： 2025 年 12 卷 30 期

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收录情况： SCI

摘要： Microbial adaptations to resource availability are crucial to predict the responses of ecosystems to carbon (C) changes, yet viral roles in C cycling under varying levels of C remain elusive. Through metagenomic analysis of soils with contrasting C availability, a total of 24,789 viral contigs predominantly represent Microviridae and Siphoviridae. The soils with low C availability (straw removal) harbored 21% lysogenic viruses and enriched auxiliary metabolic genes (AMGs) related to C degradation (p < 0.05). Conversely, the soils with high C availability (straw returning) show 93% lytic viruses, stronger virus-bacteria symbiosis, and numerous host functional genes related to C cycling and viral AMGs linked to C fixation (p < 0.05). Furthermore, these findings show that the addition of viruses boosted microbial metabolic efficiency and recalcitrant C accumulation (p < 0.05), with lytic activity accelerating organic C turnover via nutrient release and necromass formation. Overall, this study demonstrates viruses as key regulators of sustainable sequestration of C through host-driven metabolic optimization.

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