YS1 — Sorghum bicolor

Summary

SORBI_3004G299600 (YS1) on sorghum chromosome 4 encodes a YSL-like protein with Fe-NA chelate transporter and oligopeptide transmembrane transporter activity. This gene is associated with iron ion membrane transport, response to iron and zinc, thiamin and glutathione metabolism, sucrose metabolism, phenylpropanoid and lignin anabolism, autotrophy, seed development, defense response, and response to nematodes. It has been linked to grain filling period, photosynthetic rate, chlorophyll content, heavy metal stress response and tolerance, iron and chromium stress responses, iron homeostasis and deficiency tolerance, seed iron content, and copper, zinc, and mineral transport and remobilization. The protein localizes to the plastid envelope, vacuolar membrane, tonoplast, Golgi complex, mitochondria, plasmalemma, and extracellular regions. Studies of related genes in other species connect the YSL family to seed metal loading, metal remobilization during senescence, and grain iron and zinc concentrations.