We added the following sentence to Section 2.4: “Gliding requires contact with some (semi-)solid substrate in order to provide a reaction force to the gliding mechanism. We assume that the trichomes are immersed in highly viscous medium that allows them to glide freely in all directions. This medium could consist of the EPS the trichomes produce copiusly when gliding [Hoiczyk2000].” (8)
The viscosity mu = 1 Pa s is used. This value is approximately 1000 times higher than the viscosity of water, which is the environment of filamentous cyanobacteria. A reference is given, but there should also be a brief justification in the text.