Besides balancing the relative abundance
of different hormones, intensive interplay between
hormone signaling pathways emerged as an important
regulatory mechanism by which the plant is able to tailor
its immune response to the type of invader encountered
(Pieterse et al. 2009). Pathogens and insects, on the other
hand, can manipulate the plant’s defense signaling network
for their own benefit by affecting phytohormone
homeostasis to antagonize the host immune response
(Pieterse and Dicke 2007; Walling 2008; Grant and Jones
2009).