The Promise and Limitations of Metabolic Trait Prediction Across Diverse Bacteria.

Genome-based predictions of substrate utilization in 186 marine bacteria are often limited, with many strains near chance for simple substrates and errors dominated by false positives.

• Why it matters: The field assumes metabolic traits can be inferred from genomes alone, but this may mislead mechanistic community models and ecological interpretations when genotype-to-phenotype links fail.
• What they did: The study compared predictions from four genome tools against high-throughput growth phenotypes for 186 marine bacteria, focusing on simple substrates and polysaccharide utilization.
• The result: Polysaccharide utilization predicted from carbohydrate-active enzyme content performed substantially better, but strain-level reliability remained limited, implying ecological inference and modeling need experimental phenotyping.

AI summary of the abstract · may contain errors · not medical advice · read the paper.