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Abiotic Stress in Plants
Published in Hasanuzzaman Mirza, Nahar Kamrun, Fujita Masayuki, Oku Hirosuke, Tofazzal M. Islam, Approaches for Enhancing Abiotic Stress Tolerance in Plants, 2019
Ashutosh K. Pandey, Annesha Ghosh, Kshama Rai, Adeeb Fatima, Madhoolika Agrawal, S.B. Agrawal
O3 acts as a gaseous signaling molecule and elicits cellular responses which can result in drastic changes in gene expression (Cho et al., 2011). Since O3 causes oxidation of unsaturated lipid in the plasma membrane, certain membrane lipid may serve as receptor molecules and promote O3-induced lipid signaling chains (Baier et al., 2005). Studies have reported that several plasma membrane lipid-based signaling molecules like jasmonates and lipid hydroperoxides play an important role in controlling a variety of downstream processes (Kangasjärvi et al., 2005).
Nitric oxide mediated regulation of ascorbate-glutathione pathway alleviates mitotic aberrations and DNA damage in Allium cepa L. under salinity stress
Published in International Journal of Phytoremediation, 2023
Priyanka Prajapati, Praveen Gupta, Ravindra Nath Kharwar, Chandra Shekhar Seth
Nitric oxide is ubiquitous gaseous signaling molecule that plays protective role in abiotic stress conditions (Ali et al. 2017). Exogenous application of NO has been reported to regulate physiological and biochemical processes with induction of antioxidant defense systems in plants (Gupta et al. 2017). At molecular level, NO react with heme and thiol groups of proteins, which regulate ROS-scavenging enzymes and expression of genes that maintain redox homeostasis (Shukla and Singh 2015; Alamri et al. 2020). In plants, Begara-Morales et al. (2016) have shown that NO-mediated post-translational modifications (such as S-nitrosylation and tyrosine nitration) regulate activity of various enzymatic antioxidants of AsA-GSH cycle. Sodium nitroprusside is widely used NO donor compound in plants generally applied through seed soaking, root dipping, leaf spraying, and can be injected into leaf apoplast as well.