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Yueh Cho and Kazue Kanehara*(2017) Endoplasmic reticulum stress response in Arabidopsis roots – Frontier in Plant Science. 8: 144.


Roots are the frontier of plant body to perceive underground environmental change. ER stress response represents circumvention of cellular stress caused by various environmental changes; however, a limited number of studies are available on ER stress responses in roots. Here, we report the tunicamycin (TM) -induced ER stress response in Arabidopsis roots by monitoring expression patterns of BiP3, a representative marker for the response. Roots promptly responded to the TM-induced ER stress through induction of the 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.