Auxin metabolic network regulates the plant response to metalloids stress

Singh, Harshita; Bhat, Javaid Akhter; Singh, Vijay Pratap; Corpas, Francisco J.; Yadav, Shri Ram

doi:10.1016/j.jhazmat.2020.124250

Cited by 59 publications

(24 citation statements)

References 133 publications

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“…The second way is that exogenously-applied auxin probably supplements the reduced internal levels of auxin, which can be involved in the signalling pathways of the defence mechanisms (Demecsová and Tamás 2019). The transport and localization of auxin are important for the biosynthesis of metal-binding ligands, phytochelatins, and glutathione (Singh et al 2021). The theory about enhanced immobilization of free Cd is also supported by our results.…”

Section: Discussionsupporting

confidence: 77%

“…As mentioned above, exogenously-applied auxins also alleviate the toxic effects of Cd (Bashri and Prasad 2016) and improve the tolerance of plants to stress (Demescová and Tamás 2019; Singh et al 2021). The presence of Cd in plant cells has a damaging effects on biomolecules, which are important for many physiological processes such as plant growth and development, photosynthesis, respiration, and nutrient uptake (Rizwan et al 2016).…”

Section: Discussionmentioning

confidence: 99%

“…The rst way is that IBA could have scavenged the Cd in the cytoplasm. It is known that exogenous auxin can act as a chelating agent (Singh et al 2021) because auxin occurs in a deprotonated form in the cytoplasm, which has a high a nity to Cd. The second way is that exogenously-applied auxin probably supplements the reduced internal levels of auxin, which can be involved in the signalling pathways of the defence mechanisms (Demecsová and Tamás 2019).…”

Section: Discussionmentioning

confidence: 99%

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Effects of Exogenous Application of Indole-3-Butyric Acid on Maize Plants Under Cadmium Stress

Šípošová¹,

Labancová²,

Kučerová³

et al. 2021

Preprint

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Exogenously-applied auxins can alleviate the toxicity of various metals and improve a plant’s tolerance to stress. Cadmium (Cd) is a toxic metal that has a wide range of negative effects on plants. The mechanisms that result in the positive effects of auxins on stressed plants are still not fully understood. In the present study, we found that the application of indole-3-butyric acid (IBA) in concentration 10− 9 M had positive effect on the plants cultivated in the presence of Cd. IBA caused changes in the growth and morphology of the maize also under non-stress conditions; hence, we were able to select three concentrations of IBA (10− 7 M as inhibitory, 10− 8 M as non-effective, and 10− 11 M as stimulatory). Cadmium treatment increased the concentration of H2O2 and the activity of the antioxidant enzymes: superoxide dismutase (SOD), ascorbate peroxidase (APX), and catalase (CAT), while IBA (10− 9 M) ameliorated its negative effects. IBA affected the content of macronutrients and micronutrients in roots in relation to the concentration of applied IBA and the presence of Cd in the solution. The heatmap visualises the differences between the Cd and Cd + IBA effects on all parameters studied, and indicates the positive effects of IBA (10− 9 M) during Cd stress.

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Section: Discussionsupporting

confidence: 77%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Effects of Exogenous Application of Indole-3-Butyric Acid on Maize Plants Under Cadmium Stress

Šípošová¹,

Labancová²,

Kučerová³

et al. 2021

Preprint

View full text Add to dashboard Cite

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“…Being a non-essential heavy metal, cadmium (Cd) has the highest solubility and availability, therefore, it is absorbed by the plants with very much ease 5 , 6 . Cadmium invades into our surroundings through several natural and anthropogenic processes like weathering of rocks, subsurface mining, thermal power generation, and disproportionately employed wastewater and sewage water for irrigation practices in agriculture 3 , 7 . In plants, primary visible symptoms of Cd toxicity include necrosis, chlorosis, stunted growth of roots and shoots, and ultrastructural damage 6 , 8 .…”

Section: Introductionmentioning

confidence: 99%

Jasmonic acid (JA) and gibberellic acid (GA3) mitigated Cd-toxicity in chickpea plants through restricted cd uptake and oxidative stress management

Ahmad

Raja²,

Ashraf

et al. 2021

Sci Rep

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Cadmium stress is one of the chief environmental cues that can substantially reduce plant growth. In the present research, we studied the effect of jasmonic acid (JA) and gibberellic acid (GA3) applied individually and/or in combination to chickpea (Cicer arietinum) plants exposed to 150 µM cadmium sulphate. Cadmium stress resulted in reduced plant growth and pigment contents. Moreover, chickpea plants under cadmium contamination displayed higher levels of electrolytic leakage, H2O2, and malonaldehyde, as well as lower relative water content. Plants primed with JA (1 nM) and those foliar-fed with GA3 (10–6 M) showed improved metal tolerance by reducing the accumulation of reactive oxygen species, malonaldehyde and electrolytic leakage, and increasing relative water content. . Osmoprotectants like proline and glycinebetaine increased under cadmium contamination. Additionally, the enzymatic activities and non-enzymatic antioxidant levels increased markedly under Cd stress, but application of JA as well as of GA3 further improved these attributes. Enzymes pertaining to the ascorbate glutathione and glyoxylase systems increased significantly when the chickpea plants were exposed to Cd. However, JA and GA3 applied singly or in combination showed improved enzymatic activities as well as nutrient uptake, whereas they reduced the metal accumulation in chickpea plants. Taken together, our findings demonstrated that JA and GA3 are suitable agents for regulating Cd stress resistance in chickpea plants.

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“…Human activities like mining, pesticide application, fertilizer, waste sludge, and manufacturing processes are the primary cause of toxic trace element (TE) deposition in soils (Ahammed, Wu, et al, 2020; Alam et al, 2019; Khan et al, 2013; Rizwan et al, 2012). The TEs adversely affect the plant growth, metabolic networks and finally yield (Alsahli et al, 2020; Bhat et al, 2020; Singh et al, 2021). Within toxic TEs, cadmium (Cd) is a non‐biodegradable and non‐essential element for living organisms and is continuously accumulating in agricultural fields (Hasan et al, 2019; Rizwan et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Effects of biochar, farm manure, and pressmud on mineral nutrients and cadmium availability to wheat ( Triticum aestivum L.) in Cd‐contaminated soil

Majeed

Niaz

Rizwan

et al. 2021

Physiologia Plantarum

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The contamination of agricultural soils with cadmium (Cd) is one of the serious worldwide concerns for food security. Biochar and organic manures have been known for enhancing plant growth and minimizing toxic trace element stress in plants. However, less is known about the effect of different organic amendments on Cd and uptake of essential nutrients by wheat. Thus, the effects of rice straw biochar (RSB), maize stalk biochar (MSB), farmyard manure (FYM), and pressmud (PRM) at a rate of 1% w/w were tested for Cd immobilization in soil and mineral nutrient availability to wheat crop grown in Cd‐spiked soil (6.0 mg kg1). The amendments were added in Cd‐spiked soil before 12 days of seed sowing and wheat plants were harvested after maturity (115 days after sowing). The findings revealed that the use of amendments improved the number of grains per spike, straw and grain yield of wheat relative to control treatment. The treatments minimized the Cd and enhanced the contents of zinc (Zn), nitrogen (N), phosphorus (P), and potassium (K) in the leaves and grain of the wheat plants. Cadmium concentrations decreased by 35, 38, 68, and 63% in wheat grain, and grain yield increased by 19, 31, 68, and 58% with the application of FYM, PRM, MSB, and RSB, respectively. Overall, the application of MSB was more efficient in decreasing Cd concentrations in leaf and grains of wheat as compared to other conventional organic amendments.

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Auxin metabolic network regulates the plant response to metalloids stress

Cited by 59 publications

References 133 publications

Effects of Exogenous Application of Indole-3-Butyric Acid on Maize Plants Under Cadmium Stress

Effects of Exogenous Application of Indole-3-Butyric Acid on Maize Plants Under Cadmium Stress

Jasmonic acid (JA) and gibberellic acid (GA3) mitigated Cd-toxicity in chickpea plants through restricted cd uptake and oxidative stress management

Effects of biochar, farm manure, and pressmud on mineral nutrients and cadmium availability to wheat ( Triticum aestivum L.) in Cd‐contaminated soil

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