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May 6, 2026Molecular Ecology

Depth Stratification Shapes Viral Diversity, Interactions, and Metabolic Potential in a Deep Freshwater Lake

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Authors

ZLZong LiMRMinglei RenAHAng Hu

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Overview

Metagenomics reveals viral community dynamics affecting carbon fixation in surface sediments, suggesting implications for ecosystem stability.

Key Points

  • Assess the role of depth gradients in shaping viral diversity and interactions in a deep freshwater lake.
  • Utilized metagenomics to analyze 44 surface sediment samples from Fuxian Lake
  • Delineated viral community dynamics across a 0-155 m water depth gradient
  • Evaluated changes in alpha diversity, community turnover, and assembly processes.
  • Recovered 11,523 viral OTUs, with only 18% annotated at the family level
  • Found increased lytic virus dominance and larger genome sizes with depth
  • Observed functional shifts in virus-encoded auxiliary metabolic genes, particularly in carbon fixation.

Cite This Study

Li et al. (2026) studied this question.

synapsesocial.com/papers/69faa1eb04f884e66b5329behttps://doi.org/10.1111/mec.70367
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