<p>The endoplasmic reticulum (ER) is the site in plant cells for the making, folding, and modification of proteins that are secreted or incorporated into membranes post-synthesis. Cellular stress leads to improper folding of proteins, resulting in endoplasmic reticulum (ER) stress and the buildup of unfolded proteins. The unfolded protein response (UPR) initiates a complex signaling pathway aimed at restoring endoplasmic reticulum (ER) proteostasis. The plant unfolded protein response (UPR) operates through mechanisms distinct from those of the extensively researched mammalian UPR. The transcription factors bZIP17, bZIP28, and bZIP60, along with the kinase IRE1, play a crucial role in enabling plants to respond to various environmental stresses. This review article includes current knowledge of plant UPR molecular processes, incorporates recent findings on interactions with alternative stress pathways, and investigates biotechnological implications for crop improvement. We emphasize the significance of UPR signaling in plant stress physiology and clarify the potential for applying these pathways in agricultural biotechnology.</p>

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From Stress to Development: Unfolded Protein Response as a Driver of Plant Life

  • Ankita Rana,
  • Ajay K. Pandey,
  • Pramod Kaitheri Kandoth

摘要

The endoplasmic reticulum (ER) is the site in plant cells for the making, folding, and modification of proteins that are secreted or incorporated into membranes post-synthesis. Cellular stress leads to improper folding of proteins, resulting in endoplasmic reticulum (ER) stress and the buildup of unfolded proteins. The unfolded protein response (UPR) initiates a complex signaling pathway aimed at restoring endoplasmic reticulum (ER) proteostasis. The plant unfolded protein response (UPR) operates through mechanisms distinct from those of the extensively researched mammalian UPR. The transcription factors bZIP17, bZIP28, and bZIP60, along with the kinase IRE1, play a crucial role in enabling plants to respond to various environmental stresses. This review article includes current knowledge of plant UPR molecular processes, incorporates recent findings on interactions with alternative stress pathways, and investigates biotechnological implications for crop improvement. We emphasize the significance of UPR signaling in plant stress physiology and clarify the potential for applying these pathways in agricultural biotechnology.