VH1 — Oryza sativa Japonica

Summary

OsVH1 (also known as OsBRL2, OsBRI1, VH1) on rice chromosome 10 encodes a protein with leucine-rich repeat and serine/threonine kinase domains, characteristic of a plant receptor-like kinase. It is associated with diverse molecular functions including transaminase, methyltransferase, and xylanase activities, and is linked to processes such as positive regulation of glucose transport, anthocyanin metabolism, RuBisCO assembly, and glyoxylate cycling. The gene has been connected to traits including leaf vein morphology, photosynthetic ability, seed yield, drought sensitivity, leaf angle, cadmium concentration, and herbicide sensitivity. Phenotypic associations include altered leaf venation, abscisic acid insensitivity, impaired stomatal closure, and changes in seed germination and cuticular wax composition. Studies of related genes in other species link the family to cotyledon vein patterning, biomass accumulation, and photosynthetic CO₂ uptake.