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

文献类型： 外文期刊

作者： Liu, Mingfeng 1 ; Zhou, Guixiang 1 ; Zhang, Congzhi 1 ; Chen, Lin 1 ; Ma, Donghao 1 ; Zhang, Lijun 1 ; Jia, Chunhua 2 ; Ma, Ling 3 ; Zhang, Jiabao 1 ;

作者机构： 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 211135, Peoples R China

2.Shandong Acad Agr Sci, Inst Agr Resources & Environm, State Key Lab Nutrient Use & Management, Jinan 250100, Peoples R China

3.Shenyang Agr Univ, Coll Land & Environm, Shenyang 110866, Peoples R China

4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

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 ）

ISSN：

年卷期： 2025 年 12 卷 30 期

页码：

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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