H69 — Sorghum bicolor

Summary

SORBI_3007G219900 (SbH69, also known as RS1 or SIP1) on sorghum chromosome 7 encodes a member of the glycosyl hydrolase 36 family with raffinose synthase activity (EC 2.4.1.82) and galactinol-raffinose galactosyltransferase activity, localizing to the cytoplasm. The gene is associated with stachyose and oligosaccharide biosynthesis, as well as syngamy. It has been linked to photosynthetic rate and leaf morphology, and connected to leaf senescence, chloroplast function, and responses to salicylic and jasmonic acid. Studies of related genes in other species associate the family with leaf morphology, leaf senescence, anthesis time, seed germination, drought tolerance, and late flowering with reduced fertility.