期刊
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
卷 23, 期 2, 页码 -出版社
MDPI
DOI: 10.3390/ijms23020828
关键词
plants; ER; ER stress; UPR; IRE1; bZIP17; bZIP28; bZIP60
Plants are sensitive to various stresses that can lead to diseases, but they have defense mechanisms to cope with these stresses. The endoplasmic reticulum (ER) plays a crucial role in protein folding, but this process can be disrupted by stresses, causing ER stress. We discuss ER stress, the unfolded protein response (UPR) and strategies for reducing ER stress in plants.
Plants are sensitive to a variety of stresses that cause various diseases throughout their life cycle. However, they have the ability to cope with these stresses using different defense mechanisms. The endoplasmic reticulum (ER) is an important subcellular organelle, primarily recognized as a checkpoint for protein folding. It plays an essential role in ensuring the proper folding and maturation of newly secreted and transmembrane proteins. Different processes are activated when around one-third of newly synthesized proteins enter the ER in the eukaryote cells, such as glycosylation, folding, and/or the assembling of these proteins into protein complexes. However, protein folding in the ER is an error-prone process whereby various stresses easily interfere, leading to the accumulation of unfolded/misfolded proteins and causing ER stress. The unfolded protein response (UPR) is a process that involves sensing ER stress. Many strategies have been developed to reduce ER stress, such as UPR, ER-associated degradation (ERAD), and autophagy. Here, we discuss the ER, ER stress, UPR signaling and various strategies for reducing ER stress in plants. In addition, the UPR signaling in plant development and different stresses have been discussed.
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