Contrasting auxin levels between adjacent tissues locally activate distinct transcription factors during tissue reunion in incised stems.

Besides auxin, some unknown cell-to-cell signaling pathways are required for graft formation.

Root tip regeneration is dependent on polar auxin transport and acts through the WOX5/SCR/PLT pathways.

Wounding-induced adventitious root formation is triggered by downstream effectors of auxin maxima.

m>ALF4m>, m>WIND1m> and some m>WOXm> genes are a key to establish developmental plasticity of plant cells.