Biotic and Abiotic Stresses Activate Different Ca2+ Permeable Channels in Arabidopsis

作者：Xiaoqiang Cao, Zhonghao Jiang, Yan-Yan Yi, Yi Yang, Liping Ke, Zhen‐Ming Pei, Shan Zhu · 发表于：Frontiers in Plant Science · 年份：2017 · DOI：10.3389/fpls.2017.00083 · 被引用次数：51 · 研究领域：Plant Stress Responses and Tolerance、Plant Molecular Biology Research、Plant-Microbe Interactions and Immunity

To survive, plants must respond rapidly and effectively to various stress factors, including biotic and abiotic stresses. Salinity stress triggers the increase of cytosolic free Ca2+ concentration ([Ca2+]i) via Ca2+ influx across the plasma membrane, as well as bacterial flg22 and plant endogenous peptide Pep1. However, the interaction between abiotic stress-induced [Ca2+]i increases and biotic stress-induced [Ca2+]i increases is still not clear. Employing an aequorin-based Ca2+ imaging assay, in this work, we investigated the [Ca2+]i changes in response to flg22, Pep1 and NaCl treatments in Arabidopsis thaliana. We observed an additive effect on the [Ca2+]i increase which induced by flg22, Pep1 and NaCl. Our results indicate that biotic and abiotic stresses may activate different Ca2+ permeable channels. Further, Calcium signal induced by biotic and abiotic stresses was independent in terms of spatial and temporal patterning.