Abstract
Plant root architecture modulates during developmental stages and adjusts with the environmental condition. The cytosolic calcium which is a ubiquitous secondary messenger in all eukaryotes strongly affects the root system in Arabidopsis thaliana (L.) Heynh. We proposed that calcium chloride gradients affect PIN2 expression, which in term modulates root architecture and lateral root emergence. In the present study, the root development of PIN2 overexpressing lines of A. thaliana were investigated on different CaCl2 concentrations. This study found that the abundance of PIN2 protein has a direct effect on the root curvature with respect to CaCl2 gradient. In the presence of low concentration of CaCl2, PIN2 protein is stabilized and its subsequent accumulation lead to straight root architecture. However, as the CaCl2 concentration were increased, PIN2 protein destabilized and subsequently degraded which in turn showed a wavy root phenotype. On the other hand, different concentrations of CaCl2 did not show any effect on PIN2 gene at transcript level.
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M. Nisar designed the project, conducted experiments and wrote the paper. A. Ullah and H. Park modified and reviewed the paper. Z. Ali, A. Ali, R. Aman and S.F. Wadood helped M. Nisar in the experiments.
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Nisar, M., Ali, Z., Ali, A. et al. CaСl2 Salt Signaling in Primary Root Architecture and Lateral Root Emergence in Arabidopsis thaliana. Russ J Plant Physiol 67, 515–520 (2020). https://doi.org/10.1134/S1021443720030176
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DOI: https://doi.org/10.1134/S1021443720030176