The abstract is read at the publisher; the summary is JClub's.
In the Global Soil Virus Atlas, 66.2% of initial carbohydrate-active enzyme annotations were peptidoglycanases, and removing them left carbon-cycling functions at 96.7% of enzyme-resolved signals.
- Why it matters: Soil viral metabolic genes are thought to shape decomposition and nutrient cycling, but carbohydrate-active annotations may reflect viral entry or lysis rather than auxiliary metabolism, risking overestimation.
- What they did: The authors screened 1,432,147 viral genes from 1,223 soil samples across 12 ecosystem types against KEGG, Pfam, and CAZy, separating host-entry/cell-wall-lysis annotations from putative auxiliary metabolic functions.
- The result: After exclusion, only 1,698 genes (0.14% of the catalog restricted to contigs ≥10 kb) remained, and across six matched metagenomic studies viral contributions to targeted functions ranged from 0.00% to 8.45% (mean 2.27%).
The findingWhy it mattersWhat they didThe result
AI summary of the abstract · may contain errors · not medical advice · read the paper.