MTS1 regulates rice plant architecture by mediating phosphoinositide metabolism.

ABSTRACT: Plant architecture is an agronomically important trait affecting grain yield in rice (Oryza sativa L.). Here, we identified a gene, Moderate-tillering and Semi-dwarf 1 (MTS1), which encodes a type II Inositol polyphosphate 5-phosphatase (5PTase). Compared to the wild type, the mts1 mutant exhibited a significant reduction in plant height and an increase in effective tiller number. Further analysis showed that the mutation in MTS1 impairs the hydrolysis of phosphatidylinositol 4,5-bisphosphate [PI(4,5)P2], resulting in its aberrant accumulation and subsequent suppression of actin polymerization. Notably, the mutation in MTS1 specifically affects the response to gibberellin at the reproductive growth stage. Both lipid-protein overlay assay and microscale thermophoresis assay demonstrated tha

SUBMITTER: Yu D 

PROVIDER: S-EPMC12483982 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature