The power of small: microRNAs modulating stomatal movement

Trends Plant Sci. 2024 Oct 1:S1360-1385(24)00242-5. doi: 10.1016/j.tplants.2024.09.009. Online ahead of print.

Abstract

Regulation of stomatal aperture is paramount in drought-stress responses. Recently, Yang et al. demonstrated how microRNA-plantacyanin (PCY) regulates stomata movement by revealing a novel mechanism responsive to abscisic acid (ABA) that controls reactive oxygen species (ROS) in guard cells. This sets a precedent for using miRNAs as a new target for stress-resistance genetic engineering.

Keywords: ROS; drought stress; guard cell; miR408.