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Updated: Jun 28, 2025

Metagenomic Analysis of Silage
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Insights into the phage community structure and potential function in silage fermentation.

Yuan Wang1, Yu Gao1, Xin Wang1

  • 1College of Grassland Science and Technology, China Agricultural University, Beijing, 100193, PR China.

Journal of Environmental Management
|April 9, 2024
PubMed
Summary

Bacteriophages (viruses that infect bacteria) are abundant in silage and influence nutrient cycling. This study explored phage communities, revealing their roles in carbon metabolism and silage quality.

Keywords:
Biogeochemical cyclesPhageSilageViral metagenome

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Area of Science:

  • Microbiology
  • Virology
  • Agricultural Science

Background:

  • Bacteriophages (phages) are vital in biogeochemical nutrient cycling.
  • The phage community structure and function in silage fermentation are poorly understood.

Purpose of the Study:

  • To investigate phage types, lifestyles, functions, and nutrient utilization in silage using viral metagenomics.
  • To understand the role of phages in silage fermentation quality.

Main Methods:

  • Viral metagenomics (viromics) was employed to analyze phage communities in silage.
  • Phage types, host ranges, and genetic functions related to nutrient cycling were identified.

Main Results:

  • Caudovirales and Geplafuvirales were prevalent phage orders, with Campylobacterales and Enterobacterales as dominant hosts.
  • Virulent phages predominated, exhibiting broader host ranges and greater survival.
  • All identified phages were non-pathogenic; shared genes (prsA) indicated a role in carbon metabolism.

Conclusions:

  • Phages significantly impact silage fermentation, particularly in carbon metabolism.
  • Understanding phage communities is crucial for optimizing silage quality and fermentation processes.