PL — Oryza sativa Indica Group

Summary

BGIOSGA014567 (PL, also known as EGL1, GL3, RB, and several bHLH designations) on chromosome 4 of Indica rice encodes a protein with a bHLH domain, possessing DNA-binding, transcription coactivator, protein dimerization, protein kinase, and ubiquitin-protein transferase activities. It is associated with the regulation of trichome spacing, morphogenesis, and patterning, as well as plant epidermal cell fate specification, stomatal complex formation, proanthocyanidin and mucilage anabolism, and sucrose-mediated signaling. The gene is linked to numerous agronomic traits including grain shape, grain color, seed coat color, thousand-kernel weight, leaf trichome density, stem dry weight, phosphate content, cadmium concentration, UV light sensitivity, and plant male sterility. It localizes to the nucleus, cytoplasm, plasmalemma, mitochondria, root hair, and vesicles. Studies of related genes in other species link the family to trichome and root hair development, anthocyanin production, seed oil accumulation, and stress responses.