OsDGL1 is an essential protein subunit of the oligosaccharyltransferase (OST) complex, which is involved in N-glycosylation. The leaky rice mutant (Osdgl1) is defective in N-glycosylation in the root, thus, displayed a change of matrix polysaccharides in its root cell wall, shorter root cell length, smaller root meristem and cell death in the root (Qin et al., 2013).