Nitric oxide regulates plant responses to drought, salinity, and heavy metal stress
By Rizwana Begum Syed Nabi, Rupesh Tayade, A. Hussain, Krishnanand P Kulkarni, Q. M. Imran, Bong-Gyu Mun, B. Yun. Environmental and Experimental Botany, 2019
325 citations recorded by the source corpus.
Abstract Plants are exposed to diverse abiotic stresses like drought, heat, salinity, and high-metal concentrations at different stages of their life cycle. As protection against stress, plants release signaling molecules that initiate a cascade of stress-adaptation responses leading either to programmed cell death or plant acclimation. Nitric oxide (NO) is a small but important redox signaling molecule that in plants is involved in a diverse range of physiological processes including germination, development, flowering, senescence, and abiotic stress. Although the exact role of NO in plants remains unclear and is species dependent, various studies have suggested a positive correlation between NO accumulations in stress in plants. In this article, we review and discuss the biosynthesis of NO, sources and exogenous application of NO donors under drought, salt, and heavy metal stress. A review of publications indicated that, in general, application of exogenous NO alleviates the negative stress effects in plants and improves antioxidant activity in most plant species. In addition, S-nitrosylation and tyrosine nitration are two NO-mediated posttranslational modification. All these factors are important in protecting plants from diverse stresses and vary with the species. Furthermore, to determine precise mechanisms of action of NO is expected to help in efficient utilization of crop cultivation under stress conditions.
Subfields: Molecular Biology, Plant Science
View Paper: https://www.semanticscholar.org/paper/abeba49942fc927d2c0eedb2a0e9f955ae26db83
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Citations in the corpus
- Melatonin and reactive oxygen and nitrogen species: a model for the plant redox network (2019, background): “Interestingly, the cell uses some of these ROS as signaling agents that trigger a whole set of responses, and thus deal with the stressful agent(s) (25-28).”
- Cadmium stress in plants: A critical review of the effects, mechanisms, and tolerance strategies (2020, background): “NO is reported to play a crucial function in Cd response (Hasan et al., 2016) as observed by its increase in plant roots under Cd stress (Gallego et al., 2012) and mediate stress by modulation of plant hormones and alteration of gene expression and protein function (Nabi et al., 2019).”
- Abiotic Stress in Plants; Stress Perception to Molecular Response and Role of Biotechnological Tools in Stress Resistance (2021, background): “There are several other ways that a plant can deal with HMs including changing the pH of the rhizosphere (resulting in precipitation of HMs), transporting the metallic ions from symplastic to aplastic space using metal transport and carrier proteins, secretion of root exudates such as malate and oxa”