Impact of soil viruses on C emissions can be enhanced by viral shuttle processes in soil

IF 5.2 2区 农林科学 Q1 SOIL SCIENCE
Di TONG , Caixian TANG , Jianming XU
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引用次数: 0

Abstract

Soil viruses can greatly influence both microbial catabolism and anabolism. Understanding such influences is crucial for unraveling the fate of soil organic carbon (C). However, previous studies on soil viruses have primarily focused on their role in soil C loss, overlooking their role in C sequestration. In this study, soil viruses and microbes were introduced into sterilized samples of crop and forest soils from typical red and brown soil regions of China to examine the effects of soil viruses on C dynamics, from the perspective of C release and retention. The results showed that the viral effects on soil C emissions varied between soil types. However, they significantly enhanced the accumulation of recalcitrant dissolved and metal-bound organic C, which in turn reinforced the viral effects on C emissions. Furthermore, the accumulation of dissolved and metal-bound organic C was always associated with the microbial utilization of dissolved organic nitrogen (N), highlighting the coupled C and N cycling during the viral shuttle process. Our research demonstrates for the first time the virus-mediated coupling of C and N cycling in soils and the dual role of viruses in soil C release and stabilization, providing a new understanding of virus-driven soil C cycling.
土壤病毒对碳排放的影响可以通过病毒在土壤中的穿梭过程来增强
土壤病毒对微生物分解代谢和合成代谢都有很大的影响。了解这些影响对于揭示土壤有机碳(C)的命运至关重要。然而,以往对土壤病毒的研究主要集中在它们在土壤C流失中的作用,而忽视了它们在固碳中的作用。本研究将土壤病毒和微生物引入中国典型红壤和棕壤地区作物和森林土壤的消毒样品中,从碳释放和保持的角度研究土壤病毒对碳动态的影响。结果表明,病毒对土壤碳排放的影响因土壤类型而异。然而,它们显著增强了顽固溶态有机碳和金属结合有机碳的积累,这反过来又增强了病毒对碳排放的影响。此外,溶解有机C和金属结合有机C的积累一直与微生物对溶解有机氮(N)的利用有关,突出了病毒穿梭过程中C和N的耦合循环。我们的研究首次揭示了病毒介导的土壤C和N循环耦合以及病毒在土壤C释放和稳定中的双重作用,为病毒驱动的土壤C循环提供了新的认识。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Pedosphere
Pedosphere 环境科学-土壤科学
CiteScore
11.70
自引率
1.80%
发文量
147
审稿时长
5.0 months
期刊介绍: PEDOSPHERE—a peer-reviewed international journal published bimonthly in English—welcomes submissions from scientists around the world under a broad scope of topics relevant to timely, high quality original research findings, especially up-to-date achievements and advances in the entire field of soil science studies dealing with environmental science, ecology, agriculture, bioscience, geoscience, forestry, etc. It publishes mainly original research articles as well as some reviews, mini reviews, short communications and special issues.
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