MiR827 orchestrates the regulation of SPX-MFS1 and SPX-MFS5 with the assistance of lncRNA767 to enhance phosphate starvation tolerance and maize development.

ABSTRACT: MicroRNA827 (miR827) is functionally conserved among different plant species and displays species-specific characteristics, but the mechanisms by which miR827 regulates phosphate (Pi) starvation tolerance and maize development remain elusive. We found that miR827 selectively targets the Pi transporter genes SPX-MFS1 and SPX-MFS5. miR827 overexpression improved the Pi starvation tolerance, plant architecture and grain yield and quality, whereas miR827 suppression yielded a contrasting phenotype. In addition, we identified a specific long noncoding RNA (lncRNA767) that serves as a direct target and a facilitator of miR827 and can stabilize the SPX-MFS1 and SPX-MFS5 transcripts, leading to their translation inhibition. The orchestrated regulation of SPX-MFS1 and SPX-MFS5 modulates PHR1; 1 and

SUBMITTER: Chen L 

PROVIDER: S-EPMC11606416 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature