ERD4 — Brassica juncea

Summary

BJUB03G56010S (ERD4, BjOSCA2.1) on Indian mustard chromosome B03 encodes a calcium-activated cation channel belonging to the CSC1/OSCA1-like family. The gene is associated with osmolarity sensing, seed germination, and response to thirst, and its product localises to the chloroplast membrane, extracellular region, and plasmalemma. It has been linked to leaf number and drought tolerance. Studies of related genes in other species connect the OSCA2 family to root morphology traits and relative root length, as well as to various climatic adaptation phenotypes.