Salt articles from across Nature Portfolio

This study reports that the SOMBRERO, a root cap-localized transcription factor, determines root halotropic response to salt stress via spatiotemporally modulating AUX1-depdenent auxin redistribution in the root tip.

We reveal that a family of plant stress-induced signalling peptides, SERINE-RICH ENDOGENOUS PEPTIDES (SCOOPs), is much larger than originally thought, and identify key proteases required for their biogenesis. We find that impairing SCOOP biogenesis phenocopies a mutant of the SCOOP receptor MALE DISCOVERER 1-INTERACTING RECEPTOR-LIKE KINASE 2 (MIK2).

We report the high-resolution cryo-electron microscopy structures of SOS1, a major determinant of salt tolerance in plants. From our structural and functional analyses, we propose a model for how the unique large cytoplasmic domain regulates the Na⁺/H⁺ exchange activity of SOS1, enhancing our understanding of the mechanisms underpinning the regulation of SOS1 activity.

The plasma membrane Na⁺/H⁺ antiporter SOS1 has a pivotal role in determining salinity tolerance in plants. This study investigates the structure and function of SOS1 from Oryza sativa (rice), elucidating its architecture and activation mechanism, with notable implications for improving crop salt tolerance.

Steinhorst et al. show how calcium signal induced by salt stress is ‘decoded’ by plant roots to provide systemic response and to increase salt tolerance.