Pb-induced responses in Zygophyllum fabago plants are organ-dependent and modulated by salicylic acid

López-Orenes, Antonio; Martínez-Pérez, Ascensión; Calderón, Antonio A.; Ferrer, Marı́a A.

doi:10.1016/j.plaphy.2014.09.003

Cited by 34 publications

(36 citation statements)

References 40 publications

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“…Consequently, increased H 2 O 2 generation caused greater lipid peroxidation indicated by higher MDA contents. Lead-induced oxidative stress changes in morphology and structural properties of roots in different crops, resulting in a reduction of resistance, has also been demonstrated in other crop plants, e.g., Vigna unguiculata [45], O. sativa [39], B. napus [46], Zea mays [47], Vicia faba [48], Zygophyllum fabago [49], Triticum aestivum [50], and Medicago sativa [51]. Although some plants have developed an efficient antioxidant defense system to resist Pb-induced oxidative stress [51,52], excessive ROS generation results in disruption of the antioxidant defense mechanism, which is the major consequence of Pb toxicity [45].…”

Section: Discussionmentioning

confidence: 85%

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Foliar application of salicylic acid improves growth and yield attributes by upregulating the antioxidant defense system in Brassica campestris plants grown in lead-amended soils

et al. 2019

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Lead (Pb) toxicity causes a severe impact on plant growth and productivity. A protective role of salicylic acid (SA) is well known under different abiotic stress conditions. However, very little is known about the SA-induced Pb resistance mechanism. In this study, we investigated the effect of SA on mustard plants (Brassica campestris L.) under Pb-stress conditions. Plants were exposed to three levels of Pb amendment to the soil (0.25, 0.50, 1.00 mM), with or without SA (0.25 mM). Plant growth, yield attributes, and yield at harvest were reduced depending on the severity of the Pb stress. Exogenous application of SA improved plant growth and yield. Biochemical data revealed that Pb toxicity resulted in higher oxidative damage by reducing nonenzymatic antioxidants such as ascorbate and glutathione at the higher dose of Pb treatment. Antioxidant enzymes (ascorbate peroxidase – APX, monodehydroascorbate reductase – MDHAR, dehydroascorbate reductase – DHAR, glutathione reductase – GR, guaiacol peroxidase – POD, glutathione S-transferase – GST, and catalase – CAT) responses varied with the Pb doses. Both the nonenzymatic and enzymatic components of the antioxidant defense system were upregulated after application of SA, resulting in lower oxidative damage under Pb-stress conditions. Taken together, the results suggest that exogenous application of the SA mitigates Pb-induced oxidative damage and consequently results in better growth and yield in mustard plants.

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Section: Discussionmentioning

confidence: 85%

“…After germination, the mustard seedlings were thinned to three uniform and healthy plants in each pot. Four Pb treatments including a control (no treatment) were applied on days 28,35,42,49, and 56 after sowing. The treatments were C (control), Pb 0.25 (0.25 mM Pb), Pb 0.5 (0.5 mM Pb), and Pb 1.0 (1.0 mM Pb).…”

Section: Plant Materials and Treatments Appliedmentioning

confidence: 99%

Foliar application of salicylic acid improves growth and yield attributes by upregulating the antioxidant defense system in Brassica campestris plants grown in lead-amended soils

et al. 2019

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“…Catalase breaks down H O and prevents it from poisoning organisms. The accumulation of H 2 O 2 in the roots of Vicia faba was observed during its early stage of heavy-metal exposure to Pb (Pourrut et al, 2008) and H 2 O 2 increases in root tissues had also been detected after long-term exposure (14 days) to Cd in pea plants (Lopez-Orenes et al, 2014). Therefore, it could be concluded that the increase in catalase activity might be related to soil microbial detoxification.…”

Section: Correlation Analysis Of Heavy Metals and Soil Enzyme Activitiesmentioning

confidence: 89%

A proposal of “core enzyme” bioindicator in long-term Pb-Zn ore pollution areas based on topsoil property analysis

Yang

et al. 2016

Environmental Pollution

116

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To study the effects of long-term mining activities on the agricultural soil quality of Mengnuo town in Yunnan province, China, the heavy metal and soil enzyme activities of soil samples from 47 sites were examined. The results showed that long-term mining processes led to point source heavy metal pollution and Pb, Cd, Zn and As were the primary metal pollutants. Polyphenoloxidase was found the most sensitive soil enzyme activity and significantly correlated with almost all the metals (P < 0.05). Amylase (for C cycling), acid phosphatase (for P cycling) and catalase (for redox reaction) activities showed significantly positive correlations (P < 0.05) with Pb, Cd, Zn and As contents. The correlations between soil enzymes activities and Cd, Pb and Zn contents were verified in microcosm experiments, it was found that catalase activity had significant correlations (P < 0.05) with these three metals in short-term experiments using different soils under different conditions. Based on both field investigation and microcosm simulation analysis, oxidoreductases activities (rather than a specific enzyme activity) were suggested to be used as "core enzyme", which could simply and universally indicate the heavy metal pollution degrees of different environments. And hydrolases (for C, N, P and S recycling) could be used as a supplement to improve correlation accuracy for heavy metal indication in various polluted environments.

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“…In Zygophyllum fabago, increased Pb accumulation after Pb (0.75 mM) exposure was reduced by SA pretreatment. Upregulated antioxidants and downregulated oxidative damage together induced stress tolerance [125]. Salicylic acid treatment against Cd (5, 10 or 50 mM) stress increased tolerance in P. pratensis by controlling uncontrolled absorption of Cd and maintaining nutrients (K, Ca, Fe, Mg) homeostasis [127].…”

Section: Toxic Metal/metalloidsmentioning

confidence: 99%

Salicylic Acid: An All-Rounder in Regulating Abiotic Stress Responses in Plants

Hasanuzzaman¹,

Bhuiyan²,

Anee³

et al. 2017

Phytohormones - Signaling Mechanisms and Crosstalk in Plant Development and Stress Responses

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Salicylic acid (SA) is an endogenous growth regulator of phenolic nature and also a signaling molecule, which participates in the regulation of physiological processes in plants such as growth, photosynthesis, and other metabolic processes. Several studies support a major role of SA in modulating the plant response to various abiotic stresses. It is a well-founded fact that SA potentially generates a wide array of metabolic responses in plants and also affects plant-water relations. This molecule also found to be very active in mitigating oxidative stress under adverse environmental conditions. Since abiotic stress remained the greatest constraints for crop production worldwide, finding effective approaches is an important task for plant biologists. Hence, understanding the physiological role of SA would help in developing abiotic stress tolerance in plants. In this chapter, we will shed light on the recent progress on the regulatory role of SA in mitigating abiotic stress.

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Pb-induced responses in Zygophyllum fabago plants are organ-dependent and modulated by salicylic acid

Cited by 34 publications

References 40 publications

Foliar application of salicylic acid improves growth and yield attributes by upregulating the antioxidant defense system in Brassica campestris plants grown in lead-amended soils

Foliar application of salicylic acid improves growth and yield attributes by upregulating the antioxidant defense system in Brassica campestris plants grown in lead-amended soils

A proposal of “core enzyme” bioindicator in long-term Pb-Zn ore pollution areas based on topsoil property analysis

Salicylic Acid: An All-Rounder in Regulating Abiotic Stress Responses in Plants

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