In the normal gravitropic reaction, a plant root typically
changes the direction of its growth but the cellular pattern
of the RAM remains undisturbed. When the roots of
maize in the present experiments had been stimulated by
an EMF of even low strength, but sufficient to induce
bending, the treatment profoundly affected the pattern of
cell division, changing the global organization of the RAM.
This was a somewhat unexpected result as the roots at first
sight did not differ from those which ahd gravitropically
stimulated and, most importantly, were still capable of
growth. Reconstruction of the cellular pattern of the RAM