David G. Davies

David G. Davies is an American microbiologist whose research has significantly shaped modern understanding of bacterial biofilms, establishing biofilms as regulated, multicellular-like systems rather than passive surface accumulations.

He is a Professor in the Department of Biological Sciences at Binghamton University and Director of the Binghamton Biofilm Research Center. He has also served as Chair of the Institutional Biosafety Committee (2008-2025) and co‑founded Excelsior Biofilms LLC, reflecting his engagement in translational and applied biofilm research. He has a Ph.D. in Microbiology from Montana State University (1996). He has delivered numerous invited lectures at national and international conferences, including multiple ASM Biofilms meetings, Gordon Research Conferences, and industry‑focused symposia, underscoring his influence in both academic and applied microbiology. His career has focused on uncovering the molecular mechanisms that govern biofilm formation, community behavior, and regulated dispersal.

Early Career and Foundational Work on Biofilm Development

Davies’ early research demonstrated that biofilms are not passive accumulations of cells but regulated, multicellular‑like systems. His graduate work showed that Pseudomonas aeruginosa activates alginate biosynthesis genes upon surface attachment, revealing that contact with a substratum triggers specific transcriptional programs rather than simple growth on a surface .

A major breakthrough came with his 1998 Science paper showing that quorum sensing (cell-to-cell communication) controls biofilm development, providing the first evidence that cell–cell communication coordinates biofilm architecture and persistence . In his study, he discovered that bacteria actually talk to each other using chemical signals, a process called quorum sensing, and that this communication controls how biofilms form and maintain their structure. His work was the first to prove that bacteria use these signals to build organized, layered communities, changing the way scientists understood how biofilms develop and persist.

Discovery of Biofilm Dispersion as a Regulated Developmental Stage