Modeling of Signal Release by Attached Bacteria
Introduction ? Bacterial Factoids
Introduction ? Habitat
Quorum sensing
DRIVING QUESTION
Background
Cells as solute sources
Methods
Cell as a ‘perfect absorber’
Cartesian vs. spherical geometry
‘Diffusional Sphere’ = 10 rBact
Cells as source: Constant concentration at cell surface
Can a cell maintain a constant concentration at its surface?
Relevant boundary condition: Constant total flux from cell
Point source and sphere converge
Model: continuous point source Boundary condition: constant q, C(?) = 0
Elevated concentration inside the cell
What is the relationship with cell size?
Answer: SIZE DOES NOT MATTER
What if the ‘cell’ increases q [M T-1]?
C(r) linear with q
Diffusional Shell linear with q
Cell clusters
Attachment
Attachment - Uptake
Summary
Conclusions
Prediction/conjecture
Email: schmidt@nceas.ucsb.edu
Home Page: http://www.nceas.ucsb.edu/~schmidt/
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