Role of Organic Acids in Mitigating Cadmium Toxicity in Plants

Sidhu, Gagan Preet Singh; Bali, Aditi Shreeya; Bhardwaj, Renu

doi:10.1016/b978-0-12-815794-7.00010-2

Cited by 16 publications

(7 citation statements)

References 104 publications

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“…Cadmium is ubiquitous in many environments and highly toxic to all forms of life, and thus it causes significant yield losses due to its phytotoxicity [19]. By contrast, phenolic compounds, and especially low molecular weight organic acid (LMWOA) forms, are reported to alleviate the toxic effects of Cd stress [20]. As an LMWOA, VA has been shown to ameliorate the abiotic stress caused by drought and flooding [11,14].…”

Section: Discussionmentioning

confidence: 99%

Modulation of Cadmium Tolerance in Rice: Insight into Vanillic Acid-Induced Upregulation of Antioxidant Defense and Glyoxalase Systems

Bhuyan

Parvin

Mohsin

et al. 2020

Plants

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Cadmium (Cd) is a toxic heavy metal that enters the human food chain from the soil via plants. Increased Cd uptake and translocation in plants alters metabolism andreduces crop production. Maintaining crop yield therefore requires both soil remediation andenhanced plant tolerance to Cd. In this study, we investigated the effects of vanillic acid (VA) on Cd accumulation and Cd stress tolerance in rice (Oryza sativa L. cv. BRRI dhan54). Thirteen-day-old rice seedlings treated with CdCl2 (1.0 and 2.0 mM) for 72 h showed reduced growth, biomass accumulation, and water and photosynthetic pigment contents, as well as increased signs of oxidative stress (elevated levels of malondialdehyde, hydrogen peroxide, methylglyoxal, and lipoxygenase) and downregulated antioxidant and glyoxalase systems. Cadmium-induced changes in leaf relative turgidity, photosynthetic pigment content, ascorbate pool size, and glutathione content were suppressed by VA under both mild and severe Cd toxicity stress. The supplementation of VA under Cd stress conditions also increased antioxidant and glyoxylase enzyme activity. Vanillic acid also increased phytochelatin content and the biological accumulation factor, biological accumulation co-efficient, and Cd translocation factor. Vanillic acid, therefore appears to enhance Cd stress tolerance by increasing metal chelation and sequestration, by upregulating antioxidant defense and glyoxalase systems, and by facilitating nutrient homeostasis.

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Section: Discussionmentioning

confidence: 99%

Modulation of Cadmium Tolerance in Rice: Insight into Vanillic Acid-Induced Upregulation of Antioxidant Defense and Glyoxalase Systems

Bhuyan

Parvin

Mohsin

et al. 2020

Plants

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“…Changes in the pH of the rhizosphere are observed in the presence of HMs, and Cd in particular, for cereal grass cultivars-its acidity tends to increase, resulting in reduced uptake of HMs by the plant's root system [50]. The increase in the medium pH is caused by the effects of various root exudates that bind to metals and precipitate them to the apoplast, blocking their entry into the cell [51]. Some wheat species have an effective secretory system and can grow under HM toxicity stress [47].…”

Section: Inactivation Of Hms In Plantsmentioning

confidence: 99%

Heavy Metals, Their Phytotoxicity, and the Role of Phenolic Antioxidants in Plant Stress Responses with Focus on Cadmium: Review

Goncharuk

Загоскина

2023

Molecules

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The current state of heavy metal (HM) environmental pollution problems was considered in the review: the effects of HMs on the vital activity of plants and the functioning of their antioxidant system, including phenolic antioxidants. The latter performs an important function in the distribution and binding of metals, as well as HM detoxification in the plant organism. Much attention was focused on cadmium (Cd) ions as one of the most toxic elements for plants. The data on the accumulation of HMs, including Cd in the soil, the entry into plants, and the effect on their various physiological and biochemical processes (photosynthesis, respiration, transpiration, and water regime) were analyzed. Some aspects of HMs, including Cd, inactivation in plant tissues, and cell compartments, are considered, as well as the functioning of various metabolic pathways at the stage of the stress reaction of plant cells under the action of pollutants. The data on the effect of HMs on the antioxidant system of plants, the accumulation of low molecular weight phenolic bioantioxidants, and their role as ligand inactivators were summarized. The issues of polyphenol biosynthesis regulation under cadmium stress were considered. Understanding the physiological and biochemical role of low molecular antioxidants of phenolic nature under metal-induced stress is important in assessing the effect/aftereffect of Cd on various plant objects—the producers of these secondary metabolites are widely used for the health saving of the world’s population. This review reflects the latest achievements in the field of studying the influence of HMs, including Cd, on various physiological and biochemical processes of the plant organism and enriches our knowledge about the multifunctional role of polyphenols, as one of the most common secondary metabolites, in the formation of plant resistance and adaptation.

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“…Organic acids are renowned to alleviate the toxic effects of Cd stress (Sidhu et al, 2019). Zhu et al (2011) mentioned that Lycopersicon esulentum roots mainly exudate malate and maize roots preferably exudate citrate to hinder the Cd uptake and its toxicity.…”

Section: Growth Biomarkers Lignin CD and Organic Acid Contentsmentioning

confidence: 99%

Silicon Alleviates Cadmium Toxicity in Triticum aestivum L. Plants by Modulating Antioxidants, Nutrient Uptake and Gene Expression

et al. 2021

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S ILICON (Si) is beneficial for plant growth and has the potential to alleviate the deleterious effects of heavy metals in plants grown on contaminated soils. This study aimed to evaluate the adaptive mechanisms induced by Si application (1mM sodium meta-silicate, Na 2 O 3 Si.9H 2 Ox) in Triticum aestivum L. plants subjected to cadmium (Cd) stress (100 and 200µM CdSO 4 ). Under Cd stress, Si application significantly increased plant biomass, relative water content, nutrient uptake, and allocation as well as Si content while it decreased Cd accumulation compared to Cd-stressed plants. Si application also induced lignin content, mainly in roots, in the presence or absence of Cd in comparison to controls. Cd stress significantly increased the accumulation of oxalate, malate and citrate contents in the roots in comparison to control, whereas Si supplementation increased malate, and citrate in shoots. Additionally, Cd-induced oxidative stress designated by the increment of malondialdehyde, H 2 O 2 contents and electrolyte leakage was diminished upon Si application. Concomitantly, Cd-stress markedly enhanced glutathione reductase (GR), glutathione peroxidase (GSHPx), and ascorbate peroxidase (APx) while GSH/GSSG and ASA/DHASA ratios decreased. Si application significantly induced all tested antioxidant enzymes and increased GSH/ GSSG and ASA/DHASA ratios. Interestingly, low-affinity Cd transporter (LCT1), ATPase/heavy metal transporter (HMA2), and phytochelatine synthase (PCs) genes expression decreased in the shoots and roots of Si+ Cd-treated plants, while that of Si transporter (Si1) markedly increased, which may contribute to Cd uptake reduction and increased Si content. Taken together, the results highlight the role of Si in alleviating the adverse effect of Cd on wheat plants.

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Role of Organic Acids in Mitigating Cadmium Toxicity in Plants

Cited by 16 publications

References 104 publications

Modulation of Cadmium Tolerance in Rice: Insight into Vanillic Acid-Induced Upregulation of Antioxidant Defense and Glyoxalase Systems

Modulation of Cadmium Tolerance in Rice: Insight into Vanillic Acid-Induced Upregulation of Antioxidant Defense and Glyoxalase Systems

Heavy Metals, Their Phytotoxicity, and the Role of Phenolic Antioxidants in Plant Stress Responses with Focus on Cadmium: Review

Silicon Alleviates Cadmium Toxicity in Triticum aestivum L. Plants by Modulating Antioxidants, Nutrient Uptake and Gene Expression

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