Signalling Networks Underlying Cell Wall Responses to Salinity Stress

Excess of soluble salts in the soil affects agricultural land globally, limiting plant growth and development by inducing osmotic stress, ion-specific effects, and oxidative damage. Emerging evidence suggests that plant cell walls play a role in sensing and responding to salt stress. The ability of the plant cell wall to modify or remodel itself under high-salt conditions is considered a crucial adaptation mechanism. However, despite these advances, several open questions remain regarding the role of plant cell wall composition under salt stress. In this review, we summarise recent progress in understanding the mechanisms by which plant cell walls respond to salt stress. Additionally, we highlight areas for future discoveries that may have the potential to transform our understanding of cell wall biosynthesis and modification in plant salt tolerance, contributing to crop improvement.