YS1 — Sorghum bicolor

Summary

SORBI_3005G124600 (YS1, SbYS1) on sorghum chromosome 5 encodes a YSL-like protein with Fe-NA chelate transporter and oligopeptide transmembrane transporter activity. The gene is associated with iron ion membrane transport, responses to iron and zinc, glutathione and sucrose metabolism, phenylpropanoid and lignin anabolism, seed development, defense response, and signal transduction. It is associated with grain filling period, photosynthetic rate, chlorophyll content, heavy metal stress response, heavy metal stress tolerance, chromium stress response, iron tolerance, iron deficiency tolerance, and iron homeostasis. The product localizes to the plastid envelope, vacuolar membrane, tonoplast, Golgi complex, extracellular space, mitochondria, and plasmalemma. Studies of related YSL family members in other species link the family to seed metal loading, metal remobilization during senescence, and mineral transport traits including seed iron and zinc concentrations.