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Title: Conserved and plant-unique strategies for overcoming endoplasmic reticulum stress

Abstract

Stress caused by environmental conditions or physiological growth can lead to an accumulation of unfolded proteins in the endoplasmic reticulum (ER) causing ER stress, which in turn triggers a cytoprotective mechanism termed the unfolded protein response (UPR). Under mild-short stress conditions the UPR can restore ER functioning and cell growth, such as reducing the load of unfolded proteins through the upregulation of genes involved in protein folding and in degrading mis-folded proteins, and through autophagy activation, but it can also lead to cell death under prolonged and severe stress conditions. A diversified suite of sensors has been evolved in the eukaryotic lineages to orchestrate the UPR most likely to suit the cell’s necessity to respond to the different kinds of stress in a conserved as well as species-specific manner. In plants three UPR sensors cooperate with non-identical signaling pathways: the protein kinase inositol-requiring enzyme (IRE1), the ER-membrane-associated transcription factor bZIP28, and the GTP-binding protein β1 (AGB1). In this mini-review, we show how plants differ from the better characterized metazoans and fungi, providing an overview of the signaling pathways of the UPR, and highlighting the overlapping and the peculiar roles of the different UPR branches in light of evolutionary divergences inmore » eukaryotic kingdoms.« less

Authors:
 [1];  [1]
  1. Michigan State Univ., East Lansing, MI (United States). MSU-DOE Plant Research Laboratory; Michigan State Univ., East Lansing, MI (United States). Dept. of Plant Biology
Publication Date:
Research Org.:
Michigan State Univ., East Lansing, MI (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER). Biological Systems Science Division
OSTI Identifier:
1628252
Grant/Contract Number:  
FG02-91ER20021
Resource Type:
Accepted Manuscript
Journal Name:
Frontiers in Plant Science
Additional Journal Information:
Journal Volume: 5; Journal ID: ISSN 1664-462X
Publisher:
Frontiers Research Foundation
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; 54 ENVIRONMENTAL SCIENCES; Plant Sciences; unfolded protein response; ER stress; UPR temporal activation; adaptation; autophagy; programed cell death; apoptosis; eukaryotes

Citation Formats

Ruberti, Cristina, and Brandizzi, Federica. Conserved and plant-unique strategies for overcoming endoplasmic reticulum stress. United States: N. p., 2014. Web. doi:10.3389/fpls.2014.00069.
Ruberti, Cristina, & Brandizzi, Federica. Conserved and plant-unique strategies for overcoming endoplasmic reticulum stress. United States. https://doi.org/10.3389/fpls.2014.00069
Ruberti, Cristina, and Brandizzi, Federica. Wed . "Conserved and plant-unique strategies for overcoming endoplasmic reticulum stress". United States. https://doi.org/10.3389/fpls.2014.00069. https://www.osti.gov/servlets/purl/1628252.
@article{osti_1628252,
title = {Conserved and plant-unique strategies for overcoming endoplasmic reticulum stress},
author = {Ruberti, Cristina and Brandizzi, Federica},
abstractNote = {Stress caused by environmental conditions or physiological growth can lead to an accumulation of unfolded proteins in the endoplasmic reticulum (ER) causing ER stress, which in turn triggers a cytoprotective mechanism termed the unfolded protein response (UPR). Under mild-short stress conditions the UPR can restore ER functioning and cell growth, such as reducing the load of unfolded proteins through the upregulation of genes involved in protein folding and in degrading mis-folded proteins, and through autophagy activation, but it can also lead to cell death under prolonged and severe stress conditions. A diversified suite of sensors has been evolved in the eukaryotic lineages to orchestrate the UPR most likely to suit the cell’s necessity to respond to the different kinds of stress in a conserved as well as species-specific manner. In plants three UPR sensors cooperate with non-identical signaling pathways: the protein kinase inositol-requiring enzyme (IRE1), the ER-membrane-associated transcription factor bZIP28, and the GTP-binding protein β1 (AGB1). In this mini-review, we show how plants differ from the better characterized metazoans and fungi, providing an overview of the signaling pathways of the UPR, and highlighting the overlapping and the peculiar roles of the different UPR branches in light of evolutionary divergences in eukaryotic kingdoms.},
doi = {10.3389/fpls.2014.00069},
journal = {Frontiers in Plant Science},
number = ,
volume = 5,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 2014},
month = {Wed Jan 01 00:00:00 EST 2014}
}

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