Multi-species biofilms: Living with friendly neighbors

Sivan Elias, Ehud Banin

Research output: Contribution to journalReview articlepeer-review

535 Scopus citations


Our knowledge regarding the nature and development of microbial biofilms has grown significantly since the first report of these communities by Antonie van Leeuwenhoek in the late 1600s. Nevertheless, most biofilm studies examine mono-species cultures, whereas nearly all biofilm communities in nature comprise a variety of microorganisms. The species that constitute a mixed biofilm and the interactions between these microorganisms critically influence the development and shape of the community. In this review, we focus on interactions occurring within a multi-species biofilm and their effects on the nature of the mixed community. In general, interspecies interactions involve communication, typically via quorum sensing, and metabolic cooperation or competition. Interactions among species within a biofilm can be antagonistic, such as competition over nutrients and growth inhibition, or synergistic. The latter can result in the development of several beneficial phenotypes. These include the promotion of biofilm formation by co-aggregation, metabolic cooperation where one species utilizes a metabolite produced by a neighboring species, and increased resistance to antibiotics or host immune responses compared to the mono-species biofilms. These beneficial interactions in mixed biofilms have important environmental, industrial, and clinical implications. The latter, for example, impacts the course and treatment of biofilm-related infections, such as those manifested in the lungs of cystic fibrosis patients.

Original languageEnglish
Pages (from-to)990-1004
Number of pages15
JournalFEMS Microbiology Reviews
Issue number5
StatePublished - Sep 2012


  • Antibiotic resistance
  • Biofilm
  • Cell-cell communication
  • Metabolic interaction
  • Polymicrobial
  • Spatial distribution


Dive into the research topics of 'Multi-species biofilms: Living with friendly neighbors'. Together they form a unique fingerprint.

Cite this