Behaviors and Strategies of Bacterial Navigation in Chemical and Nonchemical Gradients
Figure 1
Illustration of the multiscale architecture of our unified model.
Environmental signals are sensed by the transmembrane receptor-kinase complexes which controls the level of the intracellular response regulator (CheY-P). The response regulator controls the rotational direction of flagellar motors and the bacterial tumble frequency. Some environmental factors (such as temperature) can also affect bacterial swimming speed and motor switching dynamics. The population distribution of cells is finally shaped by the alternating tumble and swim behaviors.