Fluid shear is the mechanical force exerted by the movement of fluids over cell surfaces and has been found to play an important role in cellular differentiation, development and function.

The effect of exogenous JA and mechanical wounding on the induction of the secondary laticifer differentiation was limited to treated site where high level of JA was expected.

Mechanical stress plays an important role in the cell proliferation, differentiation, apoptosis, gene expression and tissue growth.