Related Experiment Video
Updated: Jan 12, 2026

Preparation of Intact Tissue for Microscopic Analysis of the Endosperm Cell Layer in Developing and Mature Arabidopsis Seeds
Published on: May 16, 2025
Genetic and molecular mechanisms of phytohormone-mediated seed size control in crops
Shan Jiang1, Lian Wu2, Luojiang Huang3
1State Key Laboratory of Seed Innovation, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China.
Abstract:
Seed size is an important agronomic trait determining crop yield. Identifying key genes involved in seed size regulation and elucidating their molecular mechanisms are of great significance for crop breeding. Recent studies in crops have uncovered numerous genes that control seed size and weight, many of which function by modulating phytohormone biosynthesis, metabolism, or signaling pathways. This review provides a comprehensive overview of the genetic and molecular mechanisms by which phytohormones regulate seed size and weight and their cross-talks in modulating seed size. We highlight the functional conservation and divergence of homologous genes that control seed size across species. A particular focus is placed on those genes that have promising potential for yield improvement. Finally, we discuss current challenges in phytohormone regulation of seed size and molecular design breeding strategies for translating this knowledge into crop improvement.
More Related Videos
Related Concept Videos
Plant Hormones
Plant Breeding and Biotechnology
Cell Signaling in Plants
Morphogenesis
Cells Coordinate Growth and Proliferation
Seed Structure and Early Development of the Sporophyte

