The Tanada effect refers to the adhesion of root tips to glass surfaces.
[1] The phenomenon was observed while Dr. Tanada was rinsing glassware and noticed that excised root tips occasionally stuck to pyrex beakers.
Upon investigating the phenomenon closely he determined that this process could be studied in a mixture of ATP, ascorbate, auxin, magnesium, manganese and potassium.
Root tips stick to glass surfaces because they acquire a positive electrostatic charge due to some unknown effect from exposure to red light.
Several years later, Dr. Tanada[2] found that the electric charge is generated by the trace element boron.