HAP4 — Oryza sativa Indica Group

Summary

BGIOSGA017923 (HAP4) on Indica rice chromosome 5 encodes a ubiquitin-domain protein with histone methylase, deubiquitinase, ubiquitin ligase binding, and structural ribosomal constituent activities, and is annotated to core promoter and cis-regulatory region DNA binding. The gene is associated with seed dormancy and morphogenesis, endosperm and fruit development, stomatal lineage progression, trichome branching, shoot development, and responses to freezing, thermal stimulus, and salinity. It is linked to grain weight and yield, seed size, leaf length, root mass density, pollen fertility, flowering time, and disease tolerance. Associations also include abscisic acid anabolism regulation, chromatin modeling, DNA integration and replication, and localization to ribosomes, endosomes, and the ESCRT I complex. Studies of related genes in other species connect the family to salt and drought tolerance, cell proliferation, and leaf and flower development.