Stomata articles from across Nature Portfolio

Comprehensive phosphoproteomic analysis using guard cell protoplasts revealed that Thr881 phosphorylation in addition of a penultimate residue, Thr948 of plasma membrane H⁺-ATPase are important for its function and light-induced stomatal opening.

Light-induced stomatal opening is crucial for photosynthesis. Here the authors show that blue light triggers phosphorylation of two Thr residues in the C-terminal autoinhibitory domain of plasma membrane H⁺-ATPase, thereby promoting stomatal opening.

Arabidopsis E3 ubiquitin ligase CONSTITUTIVE PHOTOMORPHOGENIC 1 (COP1) suppresses the activity of plasma membrane H⁺-ATPase, thereby maintaining proper pH profiles of the guard cells and subsequent stomatal responses.

During evolution, the acquisition of special types of cells and tissues requires new regulatory genes that control cell division and cell differentiation. Here, we found that stomatal basic helix-loop-helix (bHLH) transcription factors are co-opted for the development of seta in the liverwort Marchantia polymorpha, which lacks true stomata.

Guard cell outward rectifying potassium (GORK) channel activity is associated with channel clustering at the guard cell membrane. We show that clustering and gating both depend on an extended ‘antenna’ of bound channel voltage sensors. Uncoupling clustering and gating facilitates K⁺ flux, accelerating stomatal movements in environments typical for plants in the field.