Figure 3.

IAA dynamics from the bacterial point of view. IAA in plant-microbe interactions is part of a complex network. Bacteria are able to synthesize, conjugate, and degrade IAA, regulating the IAA homeostasis in their cells. Bacterial IAA production can be influenced by different plant and environmental cues as detailed in the text. Bacterial IAA is known as an effector molecule in plant-microbe interactions, both in pathogenesis and phytostimulation. Auxins are also used by bacteria as a signal molecule to steer microbial behavior.