Pleiotropic effects of barley BLADE-ON-PETIOLE gene Uniculme4 on plant architecture and the jasmonic acid pathway.

ABSTRACT: Plant architecture is a key determinant of crop yield, and understanding the genetic basis of its regulation is crucial for crop improvement. BLADE-ON-PETIOLE (BOP) genes are known to play a fundamental role in shaping plant architecture across diverse species. In this study, we demonstrate pleiotropic effects of the barley BOP gene Uniculme4 (Cul4) on various aspects of plant architecture, including plant height, culm diameter, and grain traits. Accordingly, Cul4 is broadly expressed in different tissues and developmental stages. Comparing transcriptome profiles of cul4 mutant and wild-type plants, we uncover a novel link between Cul4 and the jasmonic acid (JA) biosynthetic pathway. Our findings demonstrate that proper Cul4 function is required to repress JA biosynthesis, with cul4 mutant

SUBMITTER: Tavakol E 

PROVIDER: S-EPMC12116171 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature