PlasmidFlow: A Web-based Platform for Interactive Visualization of Plasmid-Driven Traits

Plasmids are central mediators of horizontal gene transfer (HGT), facilitating the spread of antimicrobial resistance, virulence determinants, and adaptive functions across microbial communities. Despite the availability of extensive plasmid sequencing data, visualization of plasmid-mediated traits remains hindered by reliance on static figures or coding-intensive pipelines, limiting accessibility for microbiologists and epidemiologists. We present PlasmidFlow ( https://plasmidflow.metabopotential.site ), an interactive, web-based platform for the exploration of plasmid–host–trait associations across ecological and clinical contexts. The system integrates structured data parsing, relational storage, and modular visualization to support real-time exploration without requiring programming expertise. Users can upload plasmid–host–trait datasets, apply environment-or trait-specific filters, and generate publication-ready Sankey diagrams, plasmid-sharing network graphs, and binary trait heatmaps with full customization of visual properties. High-resolution export in SVG, PDF, and PNG formats, along with reproducible session storage, ensures compatibility with both research and publication workflows. By combining interactivity, scalability, and reproducibility, PlasmidFlow addresses a critical gap in microbial genomics, providing a user-friendly and extensible resource for investigating plasmid-driven traits in the context of antimicrobial resistance surveillance, microbial ecology, and evolutionary biology.