YS1 — Sorghum bicolor

Summary

SORBI_3006G152700, designated YS1 (also known as SbYSL3–SbYSL9, YSL1, YSL14, YSL17, YSL18), encodes an uncharacterized YSL-like protein with Fe-NA chelate transporter activity and oligopeptide transmembrane transporter activity, placing it in the OPT family. In sorghum, the gene is associated with iron transport and response to iron, as well as glutathione, sucrose, phenylpropanoid and lignin metabolism. It is linked to seed development, defense response and signal transduction, and localizes to the vacuolar membrane, plasmalemma and general membrane. The gene has also been connected to chlorophyll content. Related genes in other species, such as YSL9, YSL16 and YSL8, link the family to metal chelate transport, though this is not established for SbYS1 itself.