Azospirillum brasilense cells swimming in an oxygen gradient. Magnified 40X
I’ve spoke a lot lately about bacterial chemotaxis. I wanted to give you a taste of the real deal. These cells are happily navigating the medium with many swimming in circles, a phenotype of Azospirillum brasilense cells prior to cell aggregation (grouped cells).
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Citations:
Qi, X. et al. Swimming motility plays a key role in the stochastic dynamics of cell clumping. (2013) Physical Biology 10: 026005. Link
Bible, AN., Russell, MH., Alexandre, G. The Azospirillum brasilense Che1 chemotaxis pathway controls swimming velocity, which affects transient cell-to-cell clumping. (2012) Journal of Bacteriology 194: 3343. Link
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