Plant Responses to Arsenic: the Role of Nitric Oxide

Farnese, Fernanda dos Santos; Oliveira, Juraci Alves de; Gusman, Grasielle Soares; Leão, Gabriela Alves; Ribeiro, Cléberson; Siman, Luhan I.; Cambraia, José

doi:10.1007/s11270-013-1660-8

Cited by 35 publications

(24 citation statements)

References 30 publications

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“…These harmful effects are due, mainly, to the increase in the generation of ROS, such as superoxide anion and hydrogen peroxide (Srivastava et al, 2013; Mishra et al, 2014). The addition of SNP, in turn, decreased the production of ROS and, therefore, the damages triggered by the metalloid were also reduced, as has been observed for several other plants exposed to As (Farnese et al, 2013; Fan et al, 2014; Saeid et al, 2014). Although the reduction of ROS due to the addition of SNP is typically associated only with the enhancement of antioxidant defense systems (Jin et al, 2010; Saeid et al, 2014), in the case of P .…”

Section: Discussionsupporting

confidence: 71%

The Involvement of Nitric Oxide in Integration of Plant Physiological and Ultrastructural Adjustments in Response to Arsenic

et al. 2017

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High arsenic (As) concentrations are toxic to all the living organisms and the cellular response to this metalloid requires the involvement of cell signaling agents, such as nitric oxide (NO). The As toxicity and NO signaling were analyzed in Pistia stratiotes leaves. Plants were exposed to four treatments, for 24 h: control; SNP [sodium nitroprusside (NO donor); 0.1 mg L-1]; As (1.5 mg L-1) and As + SNP (1.5 and 0.1 mg L-1, respectively). The absorption of As increased the concentration of reactive oxygen species and triggered changes in the primary metabolism of the plants. While photosynthesis and photorespiration showed sharp decrease, the respiration process increased, probably due to chemical similarity between arsenate and phosphate, which compromised the energy status of the cell. These harmful effects were reflected in the cellular structure of P. stratiotes, leading to the disruption of the cells and a possible programmed cell death. The damages were attenuated by NO, which was able to integrate central plant physiological processes, with increases in non-photochemical quenching and respiration rates, while the photorespiration level decreased. The increase in respiratory rates was essential to achieve cellular homeostasis by the generation of carbon skeletons and metabolic energy to support processes involved in responses to stress, as well to maintaining the structure of organelles and prevent cell death. Overall, our results provide an integrated view of plant metabolism in response to As, focusing on the central role of NO as a signaling agent able to change the whole plant physiology.

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Section: Discussionsupporting

confidence: 71%

The Involvement of Nitric Oxide in Integration of Plant Physiological and Ultrastructural Adjustments in Response to Arsenic

et al. 2017

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“…The above‐mentioned results were the opposite of those obtained by Talukdar (), which observed a significant increase in the activities of APX, GR, DHAR, and POX (only in roots) under SNP treatment in Phaseolus vulgaris seedlings. In a similar way, Farnese et al () reported that Lactuca sativa plants exposed to 1.5 mg l −1 As and co‐treated with 0.1 mg l −1 SNP showed increased activities of CAT, POX, and APX. In all these cases, NO acted as a signal transducer, inducing the antioxidant defense system by increasing the activities of some of its related enzymes.…”

Section: No‐mediated Regulation Of Metal‐induced Oxidative Stresssupporting

confidence: 52%

“…Another effect of the application of NO (in the form of SNP) in As‐contaminated plants is its role in directly scavenging ROS. It was demonstrated that the NO exogenously applied was responsible for the direct elimination of O 2 ·− in water Lactuca sativa plants (Farnese et al ), and H 2 O 2 in Vigna radiata seeds (Ismail ), Triticum aestivum (Hasanuzzaman and Fujita ) and Phaseolus vulgaris (Talukdar ) seedlings exposed to different As concentrations. Additionally, the antioxidant capacity of NO under As‐induced stress was demonstrated by several authors (Singh et al , Praveen and Gupta , Praveen et al ), since after As treatment, the endogenous levels of this RNS decreased in Oryza sativa and Brassica juncea plants, accompanied by increased oxidative damage, when compared to control plants.…”

Section: No‐mediated Regulation Of Metal‐induced Oxidative Stressmentioning

confidence: 99%

Nitric oxide‐mediated regulation of oxidative stress in plants under metal stress: a review on molecular and biochemical aspects

Sharma

Soares

Sousa

et al. 2019

Physiologia Plantarum

122

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Given their sessile nature, plants continuously face unfavorable conditions throughout their life cycle, including water scarcity, extreme temperatures and soil pollution. Among all, metal(loid)s are one of the main classes of contaminants worldwide, posing a serious threat to plant growth and development. When in excess, metals which include both essential and non‐essential elements, quickly become phytotoxic, inducing the occurrence of oxidative stress. In this way, in order to ensure food production and safety, attempts to enhance plant tolerance to metal(loid)s are urgently needed. Nitric oxide (NO) is recognized as a signaling molecule, highly involved in multiple physiological events, like the response of plants to abiotic stress. Thus, substantial efforts have been made to assess NO potential in alleviating metal‐induced oxidative stress in plants. In this review, an updated overview of NO‐mediated protection against metal toxicity is provided. After carefully reviewing NO biosynthetic pathways, focus was given to the interaction between NO and the redox homeostasis followed by photosynthetic performance of plants under metal excess.

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“…As removal capacity by the plant under the evaluated conditions (Zhao et al 2009). The higher accumulation of As in S. molesta submerged leaves, which plays the role of roots, follows a trend usually observed in macrophytes (Zhao et al 2009;Farnese et al 2013) and acts as a defense strategy (Rahman & Hasegawa 2011). A key mechanism involved in the As III retention in root cells is the complexation with phytochelatins (PCs), or GSH.…”

Section: Adinan Alves Da Silva Juraci Alves De Oliveira Fernanda VImentioning

confidence: 93%

“…Peter Henry Rolfs, s/n, 36570-000, Viçosa, MG, Brazil 2 Departamento de Biologia Geral, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, s/n, 36570-000, Viçosa, MG, Brazil 3 Laboratório de Ecofi siologia Vegetal, Instituto Federal de Educação, Ciência e Tecnologia Goiano-Campus Rio Verde, 75901-970, Rio Verde, GO, Brazil Adinan Alves da Silva, Juraci Alves de Oliveira, Fernanda Vidal de Campos, Cleberson Ribeiro and Fernanda dos Santos Farnese Eichhornia crassipes (Alvarado et al 2008), Pistia stratiotes (Farnese et al 2013), and Lemna gibba (Leão et al 2014). The As III absorbed by the plant affects physiological processes such as photosynthesis and growth, besides promoting cell damage (Farooq et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Role of glutathione in tolerance to arsenite in Salvinia molesta, an aquatic fern

et al. 2017

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In many plant species, tolerance to toxic metals is highly dependent on glutathione, an essential metabolite for cellular detoxifi cation. We evaluated the responses of glutathione metabolism to arsenite (As III) in Salvinia molesta, an aquatic fern that has unexplored phytoremediation potential. Plants were exposed to diff erent As III concentrations in nutrient solution for 24 h. As III caused cell membrane damage to submerged leaves, indicating oxidative stress. Th ere was an increase in the glutathione content and ϒ-glutamylcysteine synthetase enzyme activity in the submerged and fl oating leaves. Th e glutathione peroxidase and glutathione sulfotransferase enzymes also showed increased activity in both plant parts, whereas glutathione reductase only showed increased activity in the submerged leaves. Th ese fi ndings suggest an important role for glutathione in the protection of S. molesta against the toxic eff ects of As III , with more eff ective tolerance responses in the fl oating leaves.

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Plant Responses to Arsenic: the Role of Nitric Oxide

Cited by 35 publications

References 30 publications

The Involvement of Nitric Oxide in Integration of Plant Physiological and Ultrastructural Adjustments in Response to Arsenic

The Involvement of Nitric Oxide in Integration of Plant Physiological and Ultrastructural Adjustments in Response to Arsenic

Nitric oxide‐mediated regulation of oxidative stress in plants under metal stress: a review on molecular and biochemical aspects

Role of glutathione in tolerance to arsenite in Salvinia molesta, an aquatic fern

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