Identification of Novel Components of the Unfolded Protein Response in Arabidopsis
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Fecha
2016
Profesor/a Guía
Facultad/escuela
Idioma
en
Título de la revista
ISSN de la revista
Título del volumen
Editor
FRONTIERS MEDIA
Nombre de Curso
Licencia CC
Licencia CC
Resumen
Unfavorable environmental and developmental conditions may cause disturbances in protein folding in the endoplasmic reticulum (ER) that are recognized and counteracted by components of the Unfolded Protein Response (UPR) signaling pathways. The early cellular responses include transcriptional changes to increase the folding and processing capacity of the ER. In this study, we systematically screened a collection of inducible transgenic Arabidopsis plants expressing a library of transcription factors for resistance toward UPR-inducing chemicals. We identified 23 candidate genes that may function as novel regulators of the UPR and of which only three genes (bZIP10, TBF1, and NF-YB3) were previously associated with the UPR. The putative role of identified candidate genes in the UPR signaling is supported by favorable expression patterns in both developmental and stress transcriptional analyses. We demonstrated that WRKY75 is a genuine regulator of the ER-stress cellular responses as its expression was found to be directly responding to ER stress-inducing chemicals. In addition, transgenic Arabidopsis plants expressing WRKY75 showed resistance toward salt stress, connecting abiotic and ER-stress responses.
Notas
Indexación: Web of Science
Palabras clave
ENDOPLASMIC-RETICULUM STRESS, TETHERED TRANSCRIPTION FACTOR, GENE-EXPRESSION, SALT STRESS, ER STRESS, MESSENGER-RNA, TRANSMEMBRANE PROTEIN, UBIQUITIN LIGASE, IRE1, THALIANA
Citación
Front. Plant Sci., 12 May 2016