In vitro effects of CaO nanoparticles on Triticale callus exposed to short and long-term salt stress

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ORIGINAL ARTICLE

In vitro effects of CaO nanoparticles on Triticale callus exposed to short and long‑term salt stress Büşra Yazıcılar1 · Fatma Böke1 · Azize Alaylı2 · Hayrunisa Nadaroglu3,4 · Semin Gedikli5 · Ismail Bezirganoglu1  Received: 5 June 2020 / Accepted: 25 September 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020

Abstract Key message Ca2+ NPs enhanced tolerance of Triticale callus under salt stress by improving biochemical activity and confocal laser scanning analysis, conferring salt tolerance on callus cells. Abstract  CaO NPs (­ Ca2+) are significant components that act as transducers in many adaptive and developmental processes in plants. In this study, effect of C ­ a2+ NPs on the response and regulation of the protective system in Triticale callus under short and long-salt treatments was investigated. The activation of ­Ca2+ NPs was induced by salt stress in callus of Triticale cultivars. MDA, ­H2O2, POD, and protein activities were determined in callus tissues. Concerning MDA, ­H2O2, protein activities, it was found that the C ­ a2+ NPs treatment was significant, and it demonstrated a high correlation with the tolerance levels of cultivars. Tatlıcak cultivar was detected for better MDA activities in the short time with 1.5 ppm C ­ a2+ NPs concentration of 50 g and 100 g NaCl. Similarly, the same cultivar responded with better ­H2O2 activity at 1.5 ppm ­Ca2+ NPs 100 g NaCl in the short time. POD activities exhibited a decreasing trend in response to the increasing concentrations of ­Ca2+ NPs. The best result was observed at 1.5 ppm C ­ a2+ NPs 100 g NaCl in the short term. Based on the protein content, treatment of short-term cultured callus cells with 1.5 ppm ­Ca2+ NPs inhibited stress response and it significantly promoted ­Ca2+ NPs signals as compared to control callus. Confocal laser scanning analysis proved that the application of ­Ca2+ NPs could alleviate the adverse effects of salt stress by the inhibition of stress severity in callus cells. This study demonstrated, under in vitro conditions, that the application of C ­ a2+ NPs can significantly suppress the adverse effects of salt stress on Triticale callus; it was also verified that the concentration of ­Ca2+ NPs could be important parameter to be considered in adjusting the micronutrient content in the media for this plant. Keywords Callus · Triticale · Nanoparticle · Ca2+ NPs · Confocal laser scanning analysis · In vitro assay

Communicated by Günther Hahne. * Ismail Bezirganoglu [email protected] 1



Department of Molecular Biology and Genetics, Faculty of Science, Erzurum Technical University, 25050 Erzurum, Turkey

2



Department of Nursing, Faculty of Health Sciences, Faculty of Applied Sciences, Sakarya University, 54187 Sakarya, Turkey

3

Department of Food Technology, Vocational College of Technical Sciences, Ataturk University, 25240 Erzurum, Turkey

4

Department of Nano‑Science and Nano‑Engineering, Institute of Science, Ataturk University, 25240 Erzurum, Turkey

5

Department of Histol