Auxins in defense strategies

Plant hormones operate in a very complex network where they regulate and control different vital mechanisms. They coordinate growth, development and defense via signaling involving different interactions of molecules. Activation of molecules responsible for regulation of plant immunity is mainly provided by salicylic and jasmonic acid signaling pathways. Similar to the signaling of these defense-associated plant hormones, auxin can also affect resistance to different pathogen groups and disease is manifested indirectly through the effects on growth. The various ways in which auxin regulate growth and plant development and might be closely connected to plant defense, are discussed in this review.