SWO1 modulates cell wall integrity under salt stress by interacting with importin ɑ in Arabidopsis

Abstract Maintenance of cell wall integrity is great importance not only for plant growth and development, but also the adaptation plants to adverse environments. However, how modulated under salt stress still poorly understood. Here, we report that a nuclear-localized Agenet domain-containing protein SWO1 (SWOLLEN 1) required maintenance in Arabidopsis stress. Mutation gene results swollen root tips, disordered morphology, elongation inhibition The swo1 mutant accumulates less cellulose pectin more lignin high salinity. RNA-seq ChIP-seq assays reveal binds promoter several wall-related genes regulates their expression saline conditions. Further study indicates interacts with importin ɑ IMPA1 IMPA2, which are import proteins. impa1 impa2 double exhibits mutations these two aggravate salt-hypersensitive phenotype mutant. Taken together, our data suggest functions together regulate genes, enables maintain