PCS1 — Oryza sativa Japonica

Summary

OsPCS1 (OS01G0844500) on rice chromosome 1 encodes an aspartic endopeptidase with protease activity, belonging to the pepsin-like plant aspartic peptidase A1 family. The gene is associated with detoxification of arsenic, phytochelatin anabolism, cadmium transport, and glutathione metabolism, and has been linked to arsenic accumulation and tolerance. It is also connected to embryo development, programmed cell death, male sterility, and defense responses. The encoded protein localizes to the apoplast, endoplasmic reticulum, and extracellular space. Additionally, OsPCS1 is associated with traits including reproductive period, phosphate and chlorophyll content, root and shoot fresh weight, and protein content. Studies of related genes in other species link the family to cadmium concentration, salt tolerance, and disease resistance, though these associations are not yet established in rice.