In a microgravity environment one would expect to get growth that corresponds to horizontal growth on earth. In zero gravity a plant's internodal spacings and cell dimensions would tend to have more uniform lengths and growth would tend to be the same in every direction because W-wave wavelengths are not influenced by the gravitational field. If a branch is bent from its original growth angle, in ordinary gravity, the particular set of lengths no longer matches the set for the new angle and the plants starts to correct perhaps by growing reaction wood. Certain cells seem to especially sensitive to wavelength or frequency and respond to produce corrections more readily than the usual cells in the plant. Starch displacement in a cell would tend effectively shorten a cell in the direction of the displacement.
Root caps contain especially sensitive cells.
In the wave model one would expect the whole plant to be sensitive to gravity. A mismatch between cell dimensions and wavelengths of waves can be illustrated by a mismatch between a radio antenna length and the wavelength of the signal applied to the antenna. In a mismatch situation the antenna will not accept the signal and the applied power is reflected back to the transmitter. In a plant a mismatch signal causes the plant to react with a correction as controlled by genetics.