VAR1 — Brachypodium distachyon

Summary

BdVAR1 (BRADI_2G41610V3) on chromosome 2 of Brachypodium distachyon encodes a protein with peptidase M41 and AAA+ ATPase domains, annotated as an AAA chloroplast protein-transporting ATPase with metallopeptidase, ATP-dependent peptidase, and protease activities. It is associated with thylakoid membrane organization, chloroplast stroma protein import, mitochondrial biogenesis, response to nitric oxide, and ROS metabolic process. The gene is linked to variegated leaf, chloroplast development trait, heading time, spikelet number, plant stress response trait, high temperature stress response, herbicide sensitivity, and auxin content. It localizes to the Ycf2/FtsHi complex, M-AAA complex, chloroplast thylakoid, and mitochondrial membrane. Related genes in other species connect the family to leaf morphology, oxidative stress tolerance, shoot apical meristem function, and auxin homeostasis.