Plant proximity reduces seed yield in Arabidopsis plants by decreasing the number of ovule primordia.

ABSTRACT: Proximity of vegetation, which is influenced by planting density, significantly impacts plant development. In Arabidopsis thaliana, it is well established that simulated shade, which mimics the proximity of other plants, triggers hypocotyl and petiole elongation, accelerates flowering and suppresses axillary bud growth. Although there is evidence that simulated shade affects reproduction beyond accelerating flowering, its impact on the development of reproductive tissues after plant architecture establishment (i.e., once flowering has begun) remains poorly explored. Here, we report that simulated shade promotes silique and pedicel elongation while reducing seed production, primarily by decreasing ovule number formation. Shade perception triggers rapid changes in gene expression in reproduc

SUBMITTER: Roig-Villanova I 

PROVIDER: S-EPMC12003759 | biostudies-literature | 2025 Mar-Apr

REPOSITORIES: biostudies-literature