An update on nitric oxide and its benign role in plant responses under metal stress

Nitric Oxide ◽  
2017 ◽  
Vol 67 ◽  
pp. 39-52 ◽  
Author(s):  
Seema Sahay ◽  
Meetu Gupta
Keyword(s):  
Nitric Oxide ◽  
Metal Stress ◽  
Plant Responses

scholarly journals Role of nitric oxide in plant responses to heavy metal stress: exogenous application versus endogenous production

2019 ◽  
Vol 70 (17) ◽  
pp. 4477-4488 ◽  
Author(s):  
Laura C Terrón-Camero ◽  
M Ángeles Peláez-Vico ◽  
Coral Del-Val ◽  
Luisa M Sandalio ◽  
María C Romero-Puertas
Keyword(s):  
Nitric Oxide ◽  
Heavy Metals ◽  
Heavy Metal ◽  
Human Health Risk ◽  
Heavy Metal Stress ◽  
Metal Stress ◽  
Future Research ◽  
Plant Responses ◽  
Research Perspectives

Abstract Anthropogenic activities, such as industrial processes, mining, and agriculture, lead to an increase in heavy metal concentrations in soil, water, and air. Given their stability in the environment, heavy metals are difficult to eliminate and can constitute a human health risk by entering the food chain through uptake by crop plants. An excess of heavy metals is toxic for plants, which have various mechanisms to prevent their accumulation. However, once metals enter the plant, oxidative damage sometimes occurs, which can lead to plant death. Initial production of nitric oxide (NO), which may play a role in plant perception, signalling, and stress acclimation, has been shown to protect against heavy metals. Very little is known about NO-dependent mechanisms downstream from signalling pathways in plant responses to heavy metal stress. In this review, using bioinformatic techniques, we analyse studies of the involvement of NO in plant responses to heavy metal stress, its possible role as a cytoprotective molecule, and its relationship with reactive oxygen species. Some conclusions are drawn and future research perspectives are outlined to further elucidate the signalling mechanisms underlying the role of NO in plant responses to heavy metal stress.

The diversity of nitric oxide function in plant responses to metal stress

BioMetals ◽  
2014 ◽  
Vol 27 (2) ◽  
pp. 219-228 ◽  
Author(s):  
Huyi He ◽  
Longfei He ◽  
Minghua Gu
Keyword(s):  
Nitric Oxide ◽  
Metal Stress ◽  
Plant Responses

scholarly journals Nitric oxide regulates plant responses to drought, salinity, and heavy metal stress

2019 ◽  
Vol 161 ◽  
pp. 120-133 ◽  
Author(s):  
Rizwana Begum Syed Nabi ◽  
Rupesh Tayade ◽  
Adil Hussain ◽  
Krishnanand P. Kulkarni ◽  
Qari Muhammad Imran ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Heavy Metal ◽  
Heavy Metal Stress ◽  
Metal Stress ◽  
Plant Responses

Nitric oxide and hydrogen sulfide crosstalk during heavy metal stress in plants

2019 ◽  
Author(s):  
Sheelavanta M. Shivaraj ◽  
Sanskriti Vats ◽  
Javaid A. Bhat ◽  
Priyanka Dhakte ◽  
Vinod Goyal ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Heavy Metal ◽  
Hydrogen Sulfide ◽  
Heavy Metal Stress ◽  
Metal Stress

Role of Nitric Oxide in Overcoming Heavy Metal Stress

2020 ◽  
pp. 214-237
Author(s):  
Pradyumna Kumar Singh ◽  
Madhu Tiwari ◽  
Maria Kidwai ◽  
Dipali Srivastava ◽  
Rudra Deo Tripathi ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Heavy Metal ◽  
Heavy Metal Stress ◽  
Metal Stress

scholarly journals Nitric Oxide Enhances Cytotoxicity of Lead by Modulating the Generation of Reactive Oxygen Species and Is Involved in the Regulation of Pb2+ and Ca2+ Fluxes in Tobacco BY-2 Cells

Plants ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 403 ◽  
Author(s):  
Jiaye Wu ◽  
Yue Zhang ◽  
Ruizhi Hao ◽  
Yuan Cao ◽  
Xiaoyi Shan ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Reactive Oxygen Species ◽  
Heavy Metal ◽  
Cell Death ◽  
Calcium Homeostasis ◽  
Reactive Oxygen ◽  
Ros Generation ◽  
Plant Responses ◽  
Oxygen Species ◽  
In Cells

Lead is a heavy metal known to be toxic to both animals and plants. Nitric oxide (NO) was reported to participate in plant responses to different heavy metal stresses. In this study, we analyzed the function of exogenous and endogenous NO in Pb-induced toxicity in tobacco BY-2 cells, focusing on the role of NO in the generation of reactive oxygen species (ROS) as well as Pb2+ and Ca2+ fluxes using non-invasive micro-test technology (NMT). Pb treatment induced BY-2 cell death and rapid NO and ROS generation, while NO burst occurred earlier than ROS accumulation. The elimination of NO by 2-4-carboxyphenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (cPTIO) resulted in a decrease of ROS, and the supplementation of NO by sodium nitroprusside (SNP) caused an increased accumulation of ROS. Furthermore, the addition of exogenous NO stimulated Pb2+ influx, thus promoting Pb uptake in cells and aggravating Pb-induced toxicity in cells, whereas the removal of endogenous NO produced the opposite effect. Moreover, we also found that both exogenous and endogenous NO enhanced Pb-induced Ca2+ effluxes and calcium homeostasis disorder. These results suggest that exogenous and endogenous NO played a critical regulatory role in BY-2 cell death induced by Pb stress by promoting Pb2+ influx and accumulation and disturbing calcium homeostasis.

Nitric Oxide: A Key Modulator of Plant Responses Under Environmental Stress

2021 ◽  
pp. 301-328
Author(s):  
Pankaj Pandey ◽  
Asha Devi Pallujam ◽  
S. Leelavathi ◽  
Sahil Mehta ◽  
Manesh Chander Dagla ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Environmental Stress ◽  
Plant Responses

scholarly journals Molecular insights into the functional role of nitric oxide (NO) as a signal for plant responses in chickpea

2018 ◽  
Vol 45 (2) ◽  
pp. 267 ◽  
Author(s):  
Parankusam Santisree ◽  
Pooja Bhatnagar-Mathur ◽  
Kiran K. Sharma
Keyword(s):  
Nitric Oxide ◽  
Large Scale ◽  
Molecular Mechanisms ◽  
Lipid Transfer Protein ◽  
Positive Impact ◽  
Large Subunit ◽  
Plant Responses ◽  
Acid Oxidase ◽  
No Donor ◽  
Bisphosphate Carboxylase

The molecular mechanisms and targets of nitric oxide (NO) are not fully known in plants. Our study reports the first large-scale quantitative proteomic analysis of NO donor responsive proteins in chickpea. Dose response studies carried out using NO donors, sodium nitroprusside (SNP), diethylamine NONOate (DETA) and S-nitrosoglutathione (GSNO) in chickpea genotype ICCV1882, revealed a dose dependent positive impact on seed germination and seedling growth. SNP at 0.1 mM concentration proved to be most appropriate following confirmation using four different chickpea genotypes. while SNP treatment enhanced the percentage of germination, chlorophyll and nitrogen contents in chickpea, addition of NO scavenger, cPTIO reverted its impact under abiotic stresses. Proteome profiling revealed 172 downregulated and 76 upregulated proteins, of which majority were involved in metabolic processes (118) by virtue of their catalytic (145) and binding (106) activity. A few crucial proteins such as S-adenosylmethionine synthase, dehydroascorbate reductase, pyruvate kinase fragment, 1-aminocyclopropane-1-carboxylic acid oxidase, 1-pyrroline-5-carboxylate synthetase were less abundant whereas Bowman-Birk type protease inhibitor, non-specific lipid transfer protein, chalcone synthase, ribulose-1-5-bisphosphate carboxylase oxygenase large subunit, PSII D2 protein were highly abundant in SNP treated samples. This study highlights the protein networks for a better understanding of possible NO induced regulatory mechanisms in plants.

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