Specific control of Arabidopsis BAK1/SERK4-regulated cell death by protein glycosylation. Academic Article uri icon


  • Precise control of cell death is essential for the survival of all organisms. Arabidopsis thaliana BRASSINOSTEROID INSENSITIVE 1-associated receptor kinase 1 (BAK1) and somatic embryogenesis receptor kinase 4 (SERK4) redundantly and negatively regulate cell death through elusive mechanisms. By deploying a genetic screen for suppressors of cell death triggered by virus-induced gene silencing of BAK1/SERK4 on Arabidopsis knockout collections, we identified STT3a, a protein involved in N-glycosylation modification, as an important regulator of bak1/serk4 cell death. Systematic investigation of glycosylation pathway and endoplasmic reticulum (ER) quality control (ERQC) components revealed distinct and overlapping mechanisms of cell death regulated by BAK1/SERK4 and their interacting protein BIR1. Genome-wide transcriptional analysis revealed the activation of members of cysteine-rich receptor-like kinase (CRK) genes in the bak1/serk4 mutant. Ectopic expression of CRK4 induced STT3a/N-glycosylation-dependent cell death in Arabidopsis and Nicotiana benthamiana. Therefore, N-glycosylation and specific ERQC components are essential to activate bak1/serk4 cell death, and CRK4 is likely to be among client proteins of protein glycosylation involved in BAK1/SERK4-regulated cell death.

published proceedings

  • Nat Plants

altmetric score

  • 7.85

author list (cited authors)

  • de Oliveira, M., Xu, G., Li, B. o., de Souza Vespoli, L., Meng, X., Chen, X., ... He, P.

citation count

  • 63

complete list of authors

  • de Oliveira, Marcos VV||Xu, Guangyuan||Li, Bo||de Souza Vespoli, Luciano||Meng, Xiangzong||Chen, Xin||Yu, Xiao||de Souza, Suzane Ariádina||Intorne, Aline C||de A Manhães, Ana Marcia E||Musinsky, Abbey L||Koiwa, Hisashi||de Souza Filho, Gonçalo A||Shan, Libo||He, Ping

publication date

  • January 2016