The rice RCN11 gene encodes β1,2-xylosyltransferase and is required for plant responses to abiotic stresses and phytohormones

Review/N-glycans: The making of a varied toolbox

“…In contrast to the severe phenotypes which are generated upon mutation of ER-specific N- phenotypically different from wild type plants [143]. Some reports indicated a delay in flowering time and stunted root growth and altered root hair morphology for theA.…”

“…Some reports indicated a delay in flowering time and stunted root growth and altered root hair morphology for theA. thalianacgl1 C6 stt3a-2 and cgl1-T stt3a-2 double mutants [144].Conversely, when exposed to salt stress, the rice rcn11 mutants and the A. thalianacgl1 mutants exhibited root growth arrest [127,143,145]. The A. thalianacgl1 mutants additionally had radial swellingof the root tips [127,145].The A. thalianastt3a and os9-1 mutants, both having defects in the ERAD pathway (Fig.…”

“…The A. thalianacgl1 mutants additionally had radial swellingof the root tips [127,145].The A. thalianastt3a and os9-1 mutants, both having defects in the ERAD pathway (Fig. 3), together with the rice rcn11 mutant, were also more salt-sensitive than wild type plants [114,120,143,146]. In addition, upon salt stress stt3a mutants suffered from growth inhibition, aberrant root tip morphology due to mitotic arrest of the root apical meristem and callose accumulation giving rise to radial swelling of the root tips [25].…”

N-glycan transition of the early developmental stage in Oryza sativa

“…This suggests that the N-glycan synthetic pathway of the O. sativa shoot does not differ with light conditions despite a marked difference in phenotype. In a recent study, Takano et al (2015) showed that the presence of plant-specific N-glycan structures is independent to the reduction in chlorophyll under heat stress [12]. This result strongly suggests that higher plants can adapt to differences in light conditions, and also that adaptation to environmental change does not require a transition in N-glycans.…”

Impact of Post-Translational Modifications of Crop Proteins under Abiotic Stress

“…The β1,2-xylosyltransferase is an enzyme that catalyzes the transfer of xylose to the N -glycans in Golgi apparatus whose defect disrupts root aerenchyma formation. The rice mutant with defective xylosyltransferase is susceptible to low heat or osmotic stresses [66]. The α1,3-fucosyltransferase catalyzes the transfer of fucose to the N -glycan cores.…”