Role of salicylic acid in regulation of cadmium toxicity in wheat ( Triticum aestivum L.)

Moussa, Helal Ragab; El-Gamal, S. M.

doi:10.1556/aagr.57.2009.3.7

Cited by 8 publications

(8 citation statements)

References 45 publications

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“…5), which indicated that the free radical formation was stimulated by Cd toxicity, generating serious lipid peroxidation and leading to plasma membrane injury. Similar results were reported in Triticum aestivum L. (Moussa and El-Gamal 2010) and Brassica juncea (Kaur et al 2019) plants. However, application of ACh under Cd stress resulted in decrease of MDA content.…”

Section: Discussionsupporting

confidence: 89%

Exogenous acetylcholine alleviates cadmium-induced phytotoxicity by modulating photosynthetic metabolism and antioxidant potential in tobacco (Nicotiana benthamiana)

Su¹,

Cheng²,

Qin³

et al. 2020

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Acetylcholine (ACh) plays a potential role in mediating various physiological processes in plants. However, the involvement of acetylcholine in cadmium (Cd) stress tolerance is unknown. Cd stress caused a decline in biomass, pigment, and photosynthetic capacity in Nicotiana benthamiana plants. A significant oxidative stress was evident through enhancing the accumulation of reactive oxygen species and lipid peroxidation. However, pretreatment with acetylcholine (50 and 100 µM) effectively decreased oxidative damage, especially by 50 µM ACh, which reduced H2O2 and O2 •− contents by 50.4 and 45.3%, respectively, in plants treated with Cd. Our results indicated that the protection of photosynthesis by ACh was attributed to the improved photochemical activity of PSII and inhibited stomatal closure. Additionally, ACh-induced Cd toxicity tolerance was closely associated with improved activities of antioxidant enzymes and ascorbate and glutathione pools. Thus, our results suggest that acetylcholine may act as a positive regulator against Cd toxicity in tobacco.

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Section: Discussionsupporting

confidence: 89%

Exogenous acetylcholine alleviates cadmium-induced phytotoxicity by modulating photosynthetic metabolism and antioxidant potential in tobacco (Nicotiana benthamiana)

Su¹,

Cheng²,

Qin³

et al. 2020

Photosynt.

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“…On the other hand, studies of ABA-deficient and ABA-insensitive mutants of Arabidopsis excluded a direct mediatory role for ABA in Cd-imposed phytotoxic effects on germination and growth assays (Sharma and Kumar, 2002 ). A decrease in ABA content has also been observed in wheat plants treated with 400 and 1000 μ M of CdCl 2 (Moussa and El-Gamal, 2010b ).…”

Section: Plant Growth Regulatorsmentioning

confidence: 83%

The new insights into cadmium sensing

et al. 2014

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Cadmium (Cd) is non-essential heavy metal, which in excess, exhibits deleterious effects to the most of the organisms. Mobilization of defense mechanisms against this toxic agent requires rapid activation of signaling pathways. The article presents recent advances in the research concerning cadmium signal transduction in plants. New insights into the involvement of reactive oxygen species (ROS), nitric oxide (NO), plant growth regulators, and Cd-induced protein modifications are reviewed. Moreover, the role of recently recognized Cd-associated signal elements, including micro RNAs and several cis- and trans-acting elements is discussed.

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“…For example, it was reported that treatment of Cd-stressed plants with salicylic acid alleviates a number of effects caused by Cd. It is likely that the positive effects of salicylic acid are not directly correlated with the removal of Cd, but with the activation of response and defense genes, which in turn may code for enzymes involved in the maintenance of homeostasis of plant cells ( Moussa and El-Gamal, 2010 ). Activation of pathogenesis-related defense proteins of the glucanase family is likely to be a common trait of many plants in response to Cd.…”

Section: Other Factors Affecting the Response/adaptation/defense Of Pmentioning

confidence: 99%

Target or barrier? The cell wall of early- and later-diverging plants vs cadmium toxicity: differences in the response mechanisms

et al. 2015

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Increasing industrialization and urbanization result in emission of pollutants in the environment including toxic heavy metals, as cadmium and lead. Among the different heavy metals contaminating the environment, cadmium raises great concern, as it is ecotoxic and as such can heavily impact ecosystems. The cell wall is the first structure of plant cells to come in contact with heavy metals. Its composition, characterized by proteins, polysaccharides and in some instances lignin and other phenolic compounds, confers the ability to bind non-covalently and/or covalently heavy metals via functional groups. A strong body of evidence in the literature has shown the role of the cell wall in heavy metal response: it sequesters heavy metals, but at the same time its synthesis and composition can be severely affected. The present review analyzes the dual property of plant cell walls, i.e., barrier and target of heavy metals, by taking Cd toxicity as example. Following a summary of the known physiological and biochemical responses of plants to Cd, the review compares the wall-related mechanisms in early- and later-diverging land plants, by considering the diversity in cell wall composition. By doing so, common as well as unique response mechanisms to metal/cadmium toxicity are identified among plant phyla and discussed. After discussing the role of hyperaccumulators’ cell walls as a particular case, the review concludes by considering important aspects for plant engineering.

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Role of salicylic acid in regulation of cadmium toxicity in wheat ( Triticum aestivum L.)

Cited by 8 publications

References 45 publications

Exogenous acetylcholine alleviates cadmium-induced phytotoxicity by modulating photosynthetic metabolism and antioxidant potential in tobacco (Nicotiana benthamiana)

Exogenous acetylcholine alleviates cadmium-induced phytotoxicity by modulating photosynthetic metabolism and antioxidant potential in tobacco (Nicotiana benthamiana)

The new insights into cadmium sensing

Target or barrier? The cell wall of early- and later-diverging plants vs cadmium toxicity: differences in the response mechanisms

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