Extensive cross talk is observed between
the SA, JA and ET pathways that are induced in response to oxidative
stresses such as ozone (Glazebrook et al., 2003) with many
points of reciprocal control that can involve neutral, synergistic
and antagonistic interactions (Tosti et al., 2006). We discuss the
evidence showing that the major plant hormones interact with the
cellular redox signalling hub in order to control growth and defence
processes in response to environmental stresses.