Bacterial biofilms are congregations of bacterial cells within a matrix composed of EPS, alginates, and some proteins that contribute to the adherence of root systems. This micrograph shows of mesh-like Biofilm formation by Plant Growth Promoting Bacteria Bacillus velenzensis strain B26 on the surface of roots of Brachypodium distachyonBd21-3 (Bar =50µm) Aggregates of B26 rod-shaped cells were encased in a network of mucilage surrounding the roots. [Image by: Meha Sharma - Suha Jabaji Lab]