Successful Seed Germination of the Nickel Hyperaccumulator Stackhousia tryonii

Bhatia, Naveen P.; Nkang, A.; Walsh, Kerry B.; Baker, A. J. M.; Ashwath, Nanjappa; Midmore, David J.

doi:10.1093/aob/mci151

Cited by 11 publications

(5 citation statements)

References 25 publications

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“…Nickel is recognized as an element with strong ability to bind to various types of chelating agents, especially S-donor ligands rich in highly reactive S functional groups. However, Ni is recognized as a weak PCs inductor [4,6,51,52,53], which has been also confirmed in our study. Although the amount of PCs in plants exposed to Ni was not high, but in the presence of this metal the level PCs 2 significantly increased and the intensive S nutrition enhanced PCs 2 accumulation under the lowest and moderate Ni exposure.…”

Section: Discussionsupporting

confidence: 88%

“…Nickel, like other metallic micronutrients in plants, is a functional constituent of the enzyme systems and its role is primarily associated with the valence change. This element, at relatively low concentrations (0.001–0.01 mg kg −1 dry weight; DW) is needed for the proper N and C metabolism [1,2,3] as well as for producing high-vigor viable seeds and their germination [4,5]. The most common visual symptoms of Ni deficiency are growth reduction, senescence acceleration, and leaf deformation accompanied by chlorotic and necrotic lesions as a result of Fe deficiency induced in Ni-deficient plants [6,7].…”

Section: Introductionmentioning

confidence: 99%

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Micronutrient Status and Selected Physiological Parameters of Roots in Nickel-Exposed Sinapis alba L. Affected by Different Sulphur Levels

Matraszek-Gawron

Hawrylak-Nowak

2019

Plants

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An efficient method of improving the micronutrient status of Ni-treated white mustard (Sinapis alba L.) using intensive S-SO4 nutrition was developed. Twelve variants of Hoagland’s nutrient solution differing in the concentration of S-SO4 (standard: 2 mM S, and elevated level: 6 or 9 mM S) and Ni (0, 0.0004, 0.04, or 0.08 mM Ni) were tested. The beneficial effect of intensive S nutrition on Ni-stressed plants was manifested by a significant rise in the content of Fe, Mn, and Zn, especially in the shoots. An increase was also found in the shoot B, Cu, and Mo content, whilst there were no changes in their root concentrations. Simultaneously, the shoot Cl concentrations dropped. The elevated level of S in the nutrient solution in general enhanced the translocation of Fe, Cu, Mo, and B in Ni-exposed plants. The beneficial effect of intensive S nutrition on the growth and micronutrient balance of Ni-exposed plants can be at least partially related to the positive changes in root surface properties, especially in cation exchange capacity (CEC). Meanwhile both reduced glutathione (GSH) and phytochelatins (PCs) probably do not significantly contribute to Ni resistance of white mustard under intensive S nutrition.

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Section: Discussionsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Micronutrient Status and Selected Physiological Parameters of Roots in Nickel-Exposed Sinapis alba L. Affected by Different Sulphur Levels

Matraszek-Gawron

Hawrylak-Nowak

2019

Plants

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“…GSSG is reverted to the reduced form, primarily by GSH reductases using NADPH as an electron source, and to some extent by the NADPH-dependent thioredoxin system (Marty et al, 2009). Several studies have shown that Ni detoxification in plants is mainly through chelation with organic acids as demonstrated by a concomitant increase in malate, citrate, and oxalic acids during Ni treatments (Bhatia et al, 2005;Jócsák et al, 2005). Furthermore, NMR and x-ray spectroscopy studies showed that a major proportion of Ni was chelated with citric acid in plants (Sagner et al, 1998;Krämer et al, 2000).…”

Section: Arsenite Tolerance Phenotypes Of T-dna Mutants and Ggct2;1 Omentioning

confidence: 99%

A -Glutamyl Cyclotransferase Protects Arabidopsis Plants from Heavy Metal Toxicity by Recycling Glutamate to Maintain Glutathione Homeostasis

et al. 2013

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Plants detoxify toxic metals through a GSH-dependent pathway. GSH homeostasis is maintained by the g-glutamyl cycle, which involves GSH synthesis and degradation and the recycling of component amino acids. The enzyme g-glutamyl cyclotransferase (GGCT) is involved in Glu recycling, but the gene(s) encoding GGCT has not been identified in plants. Here, we report that an Arabidopsis thaliana protein with a cation transport regulator-like domain, hereafter referred to as GGCT2;1, functions as g-glutamyl cyclotransferase. Heterologous expression of GGCT2;1 in Saccharomyces cerevisiae produced phenotypes that were consistent with decreased GSH content attributable to either GSH degradation or the diversion of g-glutamyl peptides to produce 5-oxoproline (5-OP). 5-OP levels were further increased by the addition of arsenite and GSH to the medium, indicating that GGCT2;1 participates in the cellular response to arsenic (As) via GSH degradation. Recombinant GGCT2;1 converted both GSH and g-glutamyl Ala to 5-OP in vitro. GGCT2;1 transcripts were upregulated in As-treated Arabidopsis, and ggct2;1 knockout mutants were more tolerant to As and cadmium than the wild type. Overexpression of GGCT2;1 in Arabidopsis resulted in the accumulation of 5-OP. Under As toxicity, the overexpression lines showed minimal changes in de novo Glu synthesis, while the ggct2;1 mutant increased nitrogen assimilation by severalfold, resulting in a very low As/N ratio in tissue. Thus, our results suggest that GGCT2;1 ensures sufficient GSH turnover during abiotic stress by recycling Glu.

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“…Pythomining has been suggested as a potential alternative to recovering metal for other applications. In this situation, several studies have attempted to recover metals, such as Nickel [189,209,210], from mineralized soils or waste rock. Phytomining employs hyperaccumulating plants to extract valuable metals from the substrate.…”

Section: Phytomining Of Various Metalsmentioning

confidence: 99%

Raw Materials Synthesis from Heavy Metal Industry Effluents with Bioremediation and Phytomining: A Biomimetic Resource Management Approach

Karman

Diah

Gebeshuber

2015

Advances in Materials Science and Engineering

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Heavy metal wastewater poses a threat to human life and causes significant environmental problems. Bioremediation provides a sustainable waste management technique that uses organisms to remove heavy metals from contaminated water through a variety of different processes. Biosorption involves the use of biomass, such as plant extracts and microorganisms (bacteria, fungi, algae, yeast), and represents a low-cost and environmentally friendly method of bioremediation and resource management. Biosorption-based biosynthesis is proposed as a means of removing heavy metals from wastewaters and soils as it aids the development of heavy metal nanoparticles that may have an application within the technology industry. Phytomining provides a further green method of managing the metal content of wastewater. These approaches represent a viable means of removing toxic chemicals from the effluent produced during the process of manufacturing, and the bioremediation process, furthermore, has the potential to save metal resources from depletion. Biomimetic resource management comprises bioremediation, biosorption, biosynthesis, phytomining, and further methods that provide innovative ways of interpreting waste and pollutants as raw materials for research and industry, inspired by materials, structures, and processes in living nature.

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Successful Seed Germination of the Nickel Hyperaccumulator Stackhousia tryonii

Abstract: Seeds of S. tryonii require an after-ripening period for germination.

Cited by 11 publications

References 25 publications

Micronutrient Status and Selected Physiological Parameters of Roots in Nickel-Exposed Sinapis alba L. Affected by Different Sulphur Levels

Micronutrient Status and Selected Physiological Parameters of Roots in Nickel-Exposed Sinapis alba L. Affected by Different Sulphur Levels

A -Glutamyl Cyclotransferase Protects Arabidopsis Plants from Heavy Metal Toxicity by Recycling Glutamate to Maintain Glutathione Homeostasis

Raw Materials Synthesis from Heavy Metal Industry Effluents with Bioremediation and Phytomining: A Biomimetic Resource Management Approach

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