A plant’s ability to explore and adapt to the environment relies on the ability to perceive external stimuli and to translate them into appropriate developmental and growth responses. Many of these growth responses are instigated within seconds or minutes of stimulus perception, well before changes in gene expression can affect cellular physiology to reinforce and expand on these initial responses. An array of signaling and response elements must, therefore, already be positioned to rapidly coordinate external stimuli with endogenous developmental cues
