Figure 1. A simplified model representing the role of transcriptional regulators known to be involved in stomatal movements. SNAC1 and DST have
been identified in rice, while the remaining transcription factors are from Arabidopsis thaliana. Orange and green boxes represent different stimuli
that induce stomatal closure and opening, respectively. Transcriptional regulators in red contribute to stomatal closure, whereas green transcriptional
regulators promote opening. Line arrows represent a positive regulation, while lines ending with a bar indicate a negative regulation. Dashed line corresponds
to a not fully demonstrated repression. PP2Cs, serine/threonine protein phosphatases 2C; ABA, abscisic acid.