Programmed cell death regulator BAP2 is required for IRE1-mediated unfolded protein response in Arabidopsis.

ABSTRACT: Environmental and physiological situations can challenge the balance between protein synthesis and folding capacity of the endoplasmic reticulum (ER) and cause ER stress, a potentially lethal condition. The unfolded protein response (UPR) restores ER homeostasis or actuates programmed cell death (PCD) when ER stress is unresolved. The cell fate determination mechanisms of the UPR are not well understood, especially in plants. Here, we integrate genetics and ER stress profiling with natural variation and quantitative trait locus analysis of 350 natural accessions of the model species Arabidopsis thaliana. Our analyses implicate a single nucleotide polymorphism to the loss of function of the general PCD regulator BON-ASSOCIATED PROTEIN2 (BAP2) in UPR outcomes. We establish that ER stress-ind

SUBMITTER: Pastor-Cantizano N 

PROVIDER: S-EPMC11237027 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature