Bacterial Growth in Stressed Environments

Under adverse conditions, B 168 usually grow in compact clusters, because the bacteria are immobile.
However, if the colonies are grown for very long periods, they sometimes exhibit a new mode of branching growth.
These B 168 are called the T morphotype.
These pictures are of T morphotype colonies grown by Ben-Jacob, Shochet, Cohen, Tenenbaum, Czirok and Vicsek.
Here are some examples grown under different conditions.
nutrient = 15 (g/l), agar = 2.25%
nutrient = 4, agar = 2.25%
nutrient = 2 (g/l), agar = 1.75%
nutrient = 0.01 (g/l), agar = 1.75%
Click each small picture for an enlargement in a new window.

Return to bacteria growth in stressed environments.