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    Pseudomonas aeruginosa colony, imaged on a Nikon Ti2 Eclipse (20x, 0.75NA)
Pseudomonas aeruginosa colony, imaged on a Nikon Ti2 Eclipse (20x, 0.75NA)

 

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John Ciemniecki
Graduate Student, BBE

This image is a high-resolution mosaic (the reason for the grid-like pattern) of an entire Pseudomonas aeruginosa colony that is visible by eye, approximately 8 millimeters across. The colony is composed of a mixture of wild-type and fluorescent-protein-expressing strains. The composition of both fluorescent and non-fluorescent strains creates contrast in the image that allows for visualization of the bacteria's paths of outward growth.

The Newman Lab is interested in the metabolism and bioenergetics of Pseudomonas, so it is fitting that this colony looks so much like the sun, the ultimate source of energy that, directly or indirectly, powers all life on earth.

jciemnie@caltech.edu

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