Oxidative stress triggered by arsenic in a tropical macrophyte is alleviated by endogenous and exogenous nitric oxide

da-Silva, Cristiane Jovelina; Canatto, Regiane Aparecida; Cardoso, A. A.; Ribeiro, Cléberson; Oliveira, Juraci Alves de

doi:10.1007/s40415-017-0431-y

Cited by 30 publications

(6 citation statements)

References 56 publications

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“…Therefore, we suggest that NO, with the regulation of cells and phytoglobins1 (nonsymbiotic hemoglobins1, nsHbs1), ameliorates the negative effect of Hb on the generation of ROS compounds [ 60 ]. The role of nitric oxide in the scavenging of ROS compounds has been proven by many studies [ 56 , 61 , 62 , 63 ].…”

Section: Discussionmentioning

confidence: 99%

“…This positive impact can, finally, lead to an increase in plant photosynthesis and plant growth under heavy metal toxicity. The mechanisms involved in the analyses of NO functions are still not completely clear, but there is some evidence suggesting that NO can increase plant resistance to heavy metal toxicity by reducing heavy metal accumulation and ameliorating oxidative stress in plants [ 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 ]. Some parameters, such as bioaccumulation factor (BF), the tolerance index (TI), and translocation factor (TF) evaluate plant phytoremediation potential [ 78 , 79 , 80 ].…”

Section: Discussionmentioning

confidence: 99%

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Nitric Oxide Ameliorates Plant Metal Toxicity by Increasing Antioxidant Capacity and Reducing Pb and Cd Translocation

et al. 2021

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Recently, nitric oxide (NO) has been reported to increase plant resistance to heavy metal stress. In this regard, an in vitro tissue culture experiment was conducted to evaluate the role of the NO donor sodium nitroprusside (SNP) in the alleviation of heavy metal toxicity in a bamboo species (Arundinaria pygmaea) under lead (Pb) and cadmium (Cd) toxicity. The treatment included 200 µmol of heavy metals (Pb and Cd) alone and in combination with 200 µM SNP: NO donor, 0.1% Hb, bovine hemoglobin (NO scavenger), and 50 µM L-NAME, N(G)-nitro-L-arginine methyl ester (NO synthase inhibitor) in four replications in comparison to controls. The results demonstrated that the addition of L-NAME and Hb as an NO synthase inhibitor and NO scavenger significantly increased oxidative stress and injured the cell membrane of the bamboo species. The addition of sodium nitroprusside (SNP) for NO synthesis increased antioxidant activity, protein content, photosynthetic properties, plant biomass, and plant growth under heavy metal (Pb and Cd) toxicity. It was concluded that NO can increase plant tolerance for metal toxicity with some key mechanisms, such as increasing antioxidant activities, limiting metal translocation from roots to shoots, and diminishing metal accumulation in the roots, shoots, and stems of bamboo species under heavy metal toxicity (Pb and Cd).

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Nitric Oxide Ameliorates Plant Metal Toxicity by Increasing Antioxidant Capacity and Reducing Pb and Cd Translocation

et al. 2021

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“…Thus, it is soundly promising that the treatment of THI may induce endogenous NO synthesis, which may be involved in improving stress tolerance of plants as an antioxidant. However, it is believed that oversynthesis of NO can cause damaging effects in plants (da-Silva et al, 2018). Therefore, an optimum level of cellular NO is needed for mitigating the deleterious effects of a stress.…”

Section: Discussionmentioning

confidence: 99%

Thiamine-induced nitric oxide improves tolerance to boron toxicity in pepper plants by enhancing antioxidants

Kaya¹,

Aslan²,

Uğurlar³

et al. 2020

Turk J Agric For

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The role of thiamine (THI)-induced nitric oxide (NO) synthesis in the improvement of tolerance to boron (B) toxicity in pepper (Capsicum annuum L.) was studied. A solution of THI (50 or 100 mg L -1 ) was sprayed to the foliage of pepper plants exposed to high B regime (2.0 mM H 3 BO 3 ) once a week for 4 weeks. A scavenger of NO (0.1 mM), cPTIO, along with THI was sprayed once a week to ascertain whether or not endogenous NO played a role in the alleviation of B stress in pepper plants by THI. There were significant reductions in plant dry weight, PSII quantum efficiency (F v /F m ), total chlorophyll, leaf calcium (Ca 2+ ) and potassium (K + ) contents as well as leaf water potential by 47.57%, 28.78%, 34.42%, 45.45%, 55.53%, and 471.4%, respectively, but there was a significant increase in the leaf proline, ascorbate (AsA), glutathione (GSH), hydrogen peroxide, malondialdehyde, electron leakage, B levels and NO by 2.6-, 2.3-, 1.9, 3.7-, 5.6-, 2.2-, 3.6-, and 3.0-fold, respectively in B-stressed plants. Both treatments of THI mitigated B-induced oxidative damage and led to a further increase in NO synthesis. The positive effect of THI on plants grown under B stress was fully eliminated by the cPTIO application by lowering leaf NO content. These findings exhibit that NO may function as a downstream signal in THI-induced tolerance to B toxicity in pepper plants by reversing oxidative stress, enhancing the antioxidant defense mechanism and sustaining mineral nutrient homeostasis. Thus, NO and THI both contributed to improved B toxicity tolerance in pepper plants.

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“…Similar results were obtained during drought stress in cucumber (Arasimowicz‐Jelonek et al ) and cadmium stress in wheat (Groppa et al ). High salinity was also found to increase arginase activity that converts l ‐arginine to urea and l ‐ornithine, and the latter catalyzes the formation of polyamines (putrescine, spermine and/or spermidine) that in turns oxidizes into NO (da‐Silva et al ). In Arabidopsis transgenic plants wherein availability of arginine was altered via knocking down either of the AtARGAH1 and AtARGAH2 genes encoding arginine amidohydrolase, NO production was found modulated accordingly.…”

Section: Biosynthesis Of H2s and No In Plantsmentioning

confidence: 99%

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

Shivaraj

Vats

Bhat

et al. 2019

Physiologia Plantarum

105

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Gases such as ethylene, hydrogen peroxide (H 2 O 2 ), nitric oxide (NO), carbon monoxide (CO) and hydrogen sulfide (H 2 S) have been recognized as vital signaling molecules in plants and animals. Of these gasotransmitters, NO and H 2 S have recently gained momentum mainly because of their involvement in numerous cellular processes. It is therefore important to study their various attributes including their biosynthetic and signaling pathways. The present review provides an insight into various routes for the biosynthesis of NO and H 2 S as well as their signaling role in plant cells under different conditions, more particularly under heavy metal stress. Their beneficial roles in the plant's protection against abiotic and biotic stresses as well as their adverse effects have been addressed. This review describes how H 2 S and NO, being very small-sized molecules, can quickly pass through the cell membranes and trigger a multitude of responses to various factors, notably to various stress conditions such as drought, heat, osmotic, heavy metal and multiple biotic stresses. The versatile interactions between H 2 S and NO involved in the different molecular pathways have been discussed. In addition to the signaling role of H 2 S and NO, their direct role in posttranslational modifications is also considered. The information provided here will be helpful to better understand the multifaceted roles of H 2 S and NO in plants, particularly under stress conditions.

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Oxidative stress triggered by arsenic in a tropical macrophyte is alleviated by endogenous and exogenous nitric oxide

Cited by 30 publications

References 56 publications

Nitric Oxide Ameliorates Plant Metal Toxicity by Increasing Antioxidant Capacity and Reducing Pb and Cd Translocation

Nitric Oxide Ameliorates Plant Metal Toxicity by Increasing Antioxidant Capacity and Reducing Pb and Cd Translocation

Thiamine-induced nitric oxide improves tolerance to boron toxicity in pepper plants by enhancing antioxidants

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

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