AMT2 — Brassica juncea

Summary

BJUB06G51540S (BjAMT2) on chromosome B06 of Indian mustard encodes a protein with ammonium channel activity, belonging to the AmtB-like family. The gene is associated with ammonium membrane transport, response to nematodes, arbuscular mycorrhizae formation, and response to symbiotic fungi. Its product localises to the periarbuscular membrane, plasmodesma, plasma membrane, cytoplasm, and general membrane. Associations include root senescence, root-to-shoot ammonium translocation, and ammonium uptake. Studies of related genes in other species link the family to nitrogen transport, ammonium transport, and an ammonium uptake defect with minimal root phenotype. Sequence similarity connections extend to traits such as phosphorus and potassium concentration, nitrogen recycling and content, root number and branching, lateral root number, leaf size, and plant height.