Endoplasmic Reticulum Stress Response in Arabidopsis Roots.
Endoplasmic Reticulum Stress Response in Arabidopsis Roots.
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DOI：
10.3389/fpls.2017.00144
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发表时间：
2017
影响因子：
5.6
通讯作者：
Kanehara K
中科院分区：
文献类型：
--
作者：
Cho Y;Kanehara K
根系是植物体感知地下环境变化的前沿阵地。内质网（ER）应激反应代表规避各种环境变化引起的细胞应激，然而，在根ER应激反应的研究是有限的。在这里，我们报告衣霉素（TM）诱导的ER应激反应在拟南芥根通过监测免疫球蛋白结合蛋白3（BiP3），一个代表性的反应标记的表达模式。根迅速响应TM诱导的ER压力通过诱导类似的ER压力响应基因。然而，并不是所有的细胞一致地响应TM诱导的ER应力在根中，作为BiP3高表达的根尖，在伸长区的外层，和在根的成熟区的内层。我们认为根的内质网应激反应具有组织特异性。
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.