Rice RING E3 Ligase OsRMT1 Negatively Regulates Salt Tolerance by Degrading the Canonical Salt-Responsive Protein OsMBL1.

ABSTRACT: Excessive salinity is a major non-biological stressor that hinders plant development and reduces agricultural productivity. In rice, a jacalin-related mannose-binding lectin (OsMBL1) is known to be a canonical salt-responsive factor, but its biological function and regulatory mechanism in response to salt stress remain unclear. In the current study, we show that OsMBL1 is a positive regulator of salt tolerance in rice plants. The OsMBL1 knock out (KO) lines had lower survival rates and higher H₂O₂ levels under salinity stress than did the WT (wild type), whereas the OsMBL1 overexpression lines presented a positive regulatory phenotype opposite to that of mbl1 lines. Interestingly, heterologous overexpression of OsMBL1 also conferred salt tolerance to Solanum lycopersi

SUBMITTER: Zhang W 

PROVIDER: S-EPMC12576427 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature