Effects of carboxylic and amino acids on Cd uptake by<i>Lycopersicum esculentum</i>

Nigam, Rashmi; Srivastava, M. M.

doi:10.3184/095422905782774973

Cited by 8 publications

(4 citation statements)

References 11 publications

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“…The increasing concentrations of citrate or oxalate in soil and sand culture caused increased uptake of Cd and its transport to the aerial part of tomato plants (Nigam and Srivastava, 2005). It was noted that Cd developed differently charged organic forms with organic acids.…”

Section: Plant Sciencementioning

confidence: 99%

The role of organic acids in heavy metal tolerance in plants

Osmolovskaya¹,

Dung

Kuchaeva³

2018

BioComm

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Organic acid metabolism is of fundamental importance at the cellular and at the whole plant level. In recent years there has been increased attention in the role of organic acids in modulating adaptation to the environment, including organic acids participation in the detoxification of heavy metals. The basis of the phenomenon is the ability of acids such as citrate, malate, oxalate, malonate, aconitate and tartrate to form strong bonds with heavy metal ions through metal chelatation with carboxyl groups carrying the function of donor oxygen in metal-ligands. This review deals with aspects of extracellular and intracellular chelation of heavy metal ions with the involvement of organic acids. We consider the role of metal-induced secretion of malate, citrate and oxalate by roots of various plant species in extracellular complexation of heavy metals and in the reduction of their bioavailability for plants. We also review the possible mechanisms of stimulation of metals uptake by plants under the influence of exogenous application of organic acids in the soil. The efficiency of intracellular chelation of heavy metal ions with the participation of organic acids is considered due to the importance of this strategy in hyperaccumulators and non-hyperaccumulators to improve metal tolerance in plants.

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Section: Plant Sciencementioning

confidence: 99%

The role of organic acids in heavy metal tolerance in plants

Osmolovskaya¹,

Dung

Kuchaeva³

2018

BioComm

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“…Carboxylic acid has been proved to be a very efficient group for the adsorption of heavy metal ions, in particular for the cadmium ion . In addition, it is convenient to combine the carboxylic acid into the polymeric microspheres during the polymerization .…”

Section: Resultsmentioning

confidence: 99%

“…Carboxylic acid has been proved to be a very efficient group for the adsorption of heavy metal ions, in particular for the cadmium ion. 38 In addition, it is convenient to combine the carboxylic acid into the polymeric microspheres during the polymerization. 27 Therefore, we used AA as the second monomer to introduce the carboxylic group in the microspheres following the similar procedure as in the synthesis of PMBA, and obtained the porous P (MBA-co-AA) microspheres with 7.5 vol% DMAC content (P (MBA-co-AA)-P) and the P (MBA-co-AA) microspheres without porogen (P (MBA-co-AA)).…”

Section: Adsorption and Removal Of Cadmiummentioning

confidence: 99%

Preparation of highly cross‐linked hydrophilic porous microspheres poly(N,N′‐methylenebisacrylamide) and poly(N,N′‐methylenebisacrylamide‐co‐acrylic acid) with an application on the removal of cadmium

Liu

Zhu

Yang

et al. 2018

Polymers for Advanced Techs

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An effective polymerization system was developed for the synthesis of highly cross‐linked hydrophilic monodispersed microspheres with both the micropores and mesopores inside. A series of poly(N,N′‐methylenebisacrylamide) (PMBA) microspheres with the diameters ranging from 100 to 300 nm were synthesized by distillation precipitation polymerization with N,N‐dimethylacetamide (DMAC) as the porogen, acetonitrile as the solvent, and MBA as the cross‐linker and monomer. The particle size, morphology, and porosity varied according to the variation of the DMAC content. The porosity was determined by physical adsorption of nitrogen, and reached the maximum at 7.5 vol% of DMAC with the specific surface area at 135.8 m2 g−1 and the total pore volume at 0.43 cm3 g−1. The porous and hydrophilic microspheres showed excellent swelling property in water and adsorption property for the Cd(II) in aqueous solution. Meanwhile, carboxylic groups were incorporated into the porous microspheres to achieve porous poly(N,N′‐methylenebisacrylamide‐co‐acrylic acid) (P (MBA‐co‐AA)‐P), which exhibited obvious synergies of the pores and functional groups on the adsorption and provided a perspective application of the Cd(II) removal.

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“…Due to this slow process and the toxic nature of this compound, there is a need to develop an enzyme-based solution to speed up the degradation process by identifying novel aldehyde dehydrogenases as successfully done in this study. Furthermore, the resulting carboxylic acids are beneficial for promoting soil fertility and plant growth [ 36 ] besides its recorded industrial application.…”

Section: Discussionmentioning

confidence: 99%

Mining of two novel aldehyde dehydrogenases (DHY-SC-VUT5 and DHY-G-VUT7) from metagenome of hydrocarbon contaminated soils

Baburam

Feto

2021

BMC Biotechnol

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Background Aldehyde dehydrogenases are vital for aerobic hydrocarbon degradation and is involved in the last step of catalysing the oxidation of aldehydes to carboxylic acids. With the global increase in hydrocarbon pollution of different environments, these enzymes have the potential to be used in enzymatic bioremediation applications. Results Fifteen fosmid clones with hydrocarbon degrading potential were functionally screened to identify dehydrogenase enzymes. Accordingly, the fosmid insert of the positive clones were sequenced using PacBio next generation sequencing platform and de novo assembled using CLC Genomic Work Bench. The 1233 bp long open reading frame (ORF) for DHY-SC-VUT5 was found to share a protein sequence similarity of 97.7% to short-chain dehydrogenase from E. coli. The 1470 bp long ORF for DHY-G-VUT7 was found to share a protein sequence similarity of 23.9% to glycine dehydrogenase (decarboxylating) (EC 1.4.4.2) from Caulobacter vibrioides (strain NA1000 / CB15N) (Caulobacter crescentus). The in silico analyses and blast against UNIPROT protein database with the stated similarity show that the two dehydrogenases are novel. Biochemical characterization revealed, that the highest relative activity was observed at substrate concentrations of 150 mM and 50 mM for DHY-SC-VUT5 and DHY-G-VUT7, respectively. The Km values were found to be 13.77 mM with a Vmax of 0.009135 μmol.min− 1 and 2.832 mM with a Vmax of 0.005886 μmol.min− 1 for DHY-SC-VUT5 and DHY-G-VUT7, respectively. Thus, a potent and efficient enzyme for alkyl aldehyde conversion to carboxylic acid. Conclusion The microorganisms overexpressing the novel aldehyde dehydrogenases could be used to make up microbial cocktails for biodegradation of alkanes. Moreover, since the discovered enzymes are novel it would be interesting to solve their structures by crystallography and explore the downstream applications.

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Effects of carboxylic and amino acids on Cd uptake byLycopersicum esculentum

Cited by 8 publications

References 11 publications

The role of organic acids in heavy metal tolerance in plants

The role of organic acids in heavy metal tolerance in plants

Preparation of highly cross‐linked hydrophilic porous microspheres poly(N,N′‐methylenebisacrylamide) and poly(N,N′‐methylenebisacrylamide‐co‐acrylic acid) with an application on the removal of cadmium

Mining of two novel aldehyde dehydrogenases (DHY-SC-VUT5 and DHY-G-VUT7) from metagenome of hydrocarbon contaminated soils

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