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Related Concept Videos

Biofilms01:29

Biofilms

Biofilms are complex communities of microorganisms encased in a self-produced extracellular polysaccharide matrix attached to surfaces. These microbial consortia can include single or multiple species, providing enhanced survival benefits by forming organized, multilayered structures.The formation of biofilms occurs through four key stages: attachment, colonization, development, and dispersal.During attachment, free-swimming planktonic cells adhere to a surface, often facilitated by...

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Protocol for Biofilm Streamer Formation in a Microfluidic Device with Micro-pillars
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Pattern formation exhibited by biofilm formation within microfluidic chambers.

N G Cogan1, M R Donahue, Mark Whidden

  • 1Department of Mathematics, Florida State University, Tallahassee, Florida, USA. cogan@math.fsu.edu

Biophysical Journal
|May 14, 2013
PubMed
Summary

This study visualizes Xylella fastidiosa biofilm formation in artificial plant xylem. Mathematical modeling reveals exopolymeric substances control spatial patterning, suggesting new disease control strategies.

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Area of Science:

  • Bacteriology
  • Plant Pathology
  • Biophysics

Background:

  • Xylella fastidiosa is a significant bacterial pathogen causing diseases in fruit-bearing plants, such as Pierce's disease in grapevines.
  • Understanding bacterial dynamics within plant xylem is crucial for managing plant diseases.
  • Biofilm formation plays a key role in bacterial colonization and pathogenicity.

Purpose of the Study:

  • To investigate the spatial dynamics of Xylella fastidiosa biofilm formation in artificial plant xylem.
  • To develop a mathematical model to explain the observed spatial patterning.
  • To identify key mechanisms for potential disease control strategies.

Main Methods:

  • Visualization of biofilm colonization using microfluidic chambers under laboratory conditions.
  • Development of a multiphase mathematical model to simulate bacterial dynamics.
  • Analysis of attachment and detachment processes influencing biofilm structure.

Main Results:

  • Observed robust and regular spatial patterning of Xylella fastidiosa biofilms.
  • The mathematical model successfully captured the spacing of the observed patterns.
  • Identified exopolymeric substances as the primary factor controlling pattern dynamics.

Conclusions:

  • Exopolymeric substances are critical in regulating Xylella fastidiosa spatial patterning within xylem.
  • Attachment and detachment processes are key targets for engineering disease prevention or treatment.
  • This research provides insights into bacterial dynamics for developing novel strategies against Xylella fastidiosa infections.