title: Endoplasmic Reticulum Stress Response in Arabidopsis Roots.
abstract: Roots are the frontier of plant body to perceive underground environmental change. Endoplasmic reticulum (ER) stress response represents circumvention of cellular stress caused by various environmental changes; however, a limited number of studies are available on the ER stress responses in roots. Here, we report the tunicamycin (TM) -induced ER stress response in Arabidopsis roots by monitoring expression patterns of immunoglobulin-binding protein 3 (BiP3), a representative marker for the response. Roots promptly responded to the TM-induced ER stress through the induction of similar sets of ER stress-responsive genes. However, not all cells responded uniformly to the TM-induced ER stress in roots, as BiP3 was highly expressed in root tips, an outer layer in elongation zone, and an inner layer in mature zone of roots. We suggest that ER stress response in roots has tissue specificity.
authors.affiliation: Institute of Plant and Microbial Biology, Academia SinicaTaipei, Taiwan; Molecular and Biological Agricultural Sciences Program, Taiwan International Graduate Program, Academia Sinica and National Chung-Hsing UniversityTaipei, Taiwan; Graduate Institute of Biotechnology, National Chung-Hsing UniversityTaichung, Taiwan.
authors.forename: Yueh
authors.initials: Y
authors.lastname: Cho
authors.affiliation: Institute of Plant and Microbial Biology, Academia SinicaTaipei, Taiwan; Molecular and Biological Agricultural Sciences Program, Taiwan International Graduate Program, Academia Sinica and National Chung-Hsing UniversityTaipei, Taiwan; Biotechnology Center, National Chung-Hsing UniversityTaichung, Taiwan; Muroran Institute of TechnologyMuroran, Japan.
authors.forename: Kazue
authors.initials: K
authors.lastname: Kanehara
keywords: Arabidopsis thaliana; ER stress response; UPR; root; stress response