Heavy Metals

<< Return to all publications

Fri, 07/30/2021 - 08:02
by Xing Gao, Junping Tian, Zheng Huo, Yanbin Wu, Chenxi Li Heavy metal contamination in soil is an important factor affecting the determination of safe redevelopment methods for industrial and mining land. In this paper, the soil environment of a typical mining city in northern China was taken as the research object, 148 surface soil samples were collected and the contents of heavy metals were...
Fri, 07/30/2021 - 06:07
Author(s): Chufan Liu, Rongbo Xiao, Fei Huang, Xiaojun Yang, Weijie Dai, Meili Xu
Fri, 07/30/2021 - 02:01
Abstract Purpose Evaluation of various mechanisms of Cd2+ and Zn2+ root uptake through modelling, including interactions with Fe uptake. Methods Four increasingly complex models were developed and tested against measured uptake by the hyperaccumulator Noccaea caerulescens grown on three contaminated soils. Model 1 formalises root uptake of free hydrated ions only, to which the dissociation of...
Thu, 07/29/2021 - 16:00
Hybridization is one of the important factors influencing the adaptive evolution of invasive plants. According to previous studies, hybridization with an invasive plant reduces the adaptability of its native congener to environment. However, in this study, the hybridization with an invasive plant of Xanthium strumarium (LT) improves the tolerance and accumulation of its native congener Xanthium...
Sun, 07/25/2021 - 06:10
Author(s): Nisachon Praoboon, Suphawuth Siriket, Narin Taokaenchan, Surasak Kuimalee, Sirirat Phaisansuthichol, Pusit Pookmanee, Sakchai Satienperakul
Sun, 07/25/2021 - 04:03
Natural products (NPs) have a long history as sources of compounds for crop protection. Perhaps a more important role for NPs has been as models and inspiration for the discovery and development of synthetic crop protection compounds. NPs and their synthetic mimics account for 18% of all crop protection compounds, whereas another 38% of all crop protection compounds have a NP that could have...
Sat, 07/24/2021 - 02:02
Proponents of large-scale land investments (LSLI) still promote them as a development opportunity, which can lead, among other benefits, to job creation and enhanced food security for local communities. However, there is increasing evidence that these investments often deprive affected communities of their access to land, with multiple negative impacts on livelihoods, food security and on the...
Thu, 07/22/2021 - 16:00
Microorganisms play an important role in the remediation of cadmium pollution in the soil and their diversity can be affected by cadmium. In this study, the bacterial community in arable soil samples collected from two near geographical sites, with different degrees of cadmium pollution at three different seasons, were characterized using Illumina MiSeq sequencing. The result showed that cadmium...
Tue, 07/20/2021 - 04:03
Inspired by commercially established fluxapyroxad as the lead compound of novel efficient antifungal ingredients, novel pyrazole carboxylate derivatives containing a flexible thiazole backbone were successfully designed, synthesized, and detected for their in vitro and in vivo biological activities against eight agricultural fungi. The antifungal bioassay results showed that compound 24 revealed...
Mon, 07/19/2021 - 06:11
Author(s): Kazuhiro Sato, Kazuyoshi Takeda, Jian Feng Ma Evaluating genetic variation in barley (Hordeum vulgare) germplasm, combined with genome-wide genotyping, is vital for identifying genes controlling important grain-quality traits. For example, in addition to traditional grain quality properties such as starch and protein contents, grain safety parameters such as heavy metal content, are...
Sun, 07/18/2021 - 06:09
Author(s): Yuanfeng Li, Yachao Wang, Xiaoyun Shen, Fuyuan Liu Mineral development and metal smelting are the main sources of heavy metal pollution, and copper (Cu) and cadmium (Cd) are the most serious mineral elements in heavy metal pollution. Food chain is the main channel for Cu and Cd to enter human body. Excessive accumulation of Cu and Cd can lead to a variety of diseases and threaten human...
Thu, 07/15/2021 - 16:00
Cadmium is an environmental pollutant with high toxicity that negatively affects plant growth and development. To understand the molecular mechanisms of plant response to cadmium stress, we have performed a genome-wide transcriptome analysis on barley plants treated with an increased concentration of cadmium. Differential gene expression analysis revealed 10,282 deregulated transcripts present in...
Thu, 07/15/2021 - 16:00
Antibiotic-resistant ESKAPE pathogens (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter species) has become a serious threat to public health worldwide. Cationic α-helical antimicrobial peptides (CαAMPs) have attracted much attention as promising solutions in post-antibiotic era. However, strong hemolytic...
Thu, 07/15/2021 - 06:10
Author(s): Ruyi Yang, Yuhuan He, Linfeng Luo, Meng Zhu, Shuting Zan, Fuyu Guo, Bo Wang, Beibei Yang Natural selenium (Se)-rich areas in China are generally characterized by high geological background of cadmium (Cd). However, the interaction between Se and Cd in the soil-rice-human continuum in such areas remains elusive. The concentrations, bioaccessibilities, and biomarkers of Se and Cd in a...
Thu, 07/15/2021 - 00:00
The synthesis and biological activity of several novel nitrothiazole, nitrobenzothiazole, and nitrofuran containing antimicrobial agents for the eradication of biofilm-forming Gram-negative and Gram-positive pathogens is described. Nitazoxanide (NTZ), nitrofurantoin, and furazolidone are commercial antimicrobials which were used as models to show how structural modification improved activity...
Wed, 07/14/2021 - 16:00
Heavy metal contamination is an environmental issue on a global scale. Particularly, cadmium poses substantial threats to crop and human health. Saccharomyces cerevisiae is one of the model organisms to study cadmium toxicity and was recently engineered as a cadmium hyperaccumulator. Therefore, it is desirable to overcome the cadmium sensitivity of S. cerevisiae via genetic engineering for...
Wed, 07/14/2021 - 06:07
Author(s): Mateja Potisek, Matevž Likar, Katarina Vogel-Mikuš, Iztok Arčon, Jože Grdadolnik, Marjana Regvar The contribution of 1,8-dihydroxy naphthalene (DHN) melanin to cadmium (Cd) tolerance in two dark septate endophytes (DSE) of the genus Cadophora with different melanin content was investigated in vitro. The DSE isolate Cad#148 with higher melanin content showed higher tolerance to Cd than...
Wed, 07/14/2021 - 02:02
The Animas River provides irrigation water in northwestern New Mexico and the Navajo Nation. Concerns regarding the river water quality arose on August 5, 2015, when approximately 11.35 million liters of heavy metal contaminated water was accidentally released from the Gold King Mine into the Animas River. This study sought to determine the total concentrations of 7 heavy metal(loid)s (As, Pb,...
Tue, 07/13/2021 - 08:02
by Madiha Khadim Hussain, Abida Aziz, Hafiza Mamona Allah Ditta, Muhammad Farooq Azhar, Ahmed M. El-Shehawi, Sajjad Hussain, Noman Mehboob, Mubshar Hussain, Shahid Farooq Cadmium (Cd) is a widespread heavy metal, which commonly exert negative impacts on agricultural soils and living organisms. Foliar application of seed water extract of black cumin (Nigella sativa L.) can mitigate the adverse...
Tue, 07/13/2021 - 08:02
Childhood lead exposure has devastating lifelong consequences, as even low-level exposure stunts intelligence and leads to delinquent behavior. However, these consequences may be more extensive than previously thought because childhood lead exposure may adversely affect normal-range personality traits. Personality influences nearly every aspect of human functioning, from well-being to career...
Sun, 07/11/2021 - 06:08
Author(s): Haotian Xue, Huabin Cao, Chenghong Xing, Jiapei Feng, Linwei Zhang, Caiying Zhang, Guoliang Hu, Fan Yang Cadmium (Cd) is a toxic heavy metal that accumulates in the brain and causes a series of histopathological changes. Selenium (Se) exerts a crucial function in protecting damage caused by toxic heavy metals, but its potential mechanism is rarely studied. The main purpose of this...
Sat, 07/10/2021 - 08:02
COVID-19 has led to over 3.47 million deaths worldwide and continues to devastate primarily middle- and low-income countries. High-frequency testing has been proposed as a potential solution to prevent outbreaks. However, current tests are not sufficiently low-cost, rapid, or scalable to enable broad COVID-19 testing. Here, we describe LEAD (Low-cost...
Fri, 07/09/2021 - 08:02
by Maria N. Ayala, Denise Y. P. Henriques The ability to switch between different visuomotor maps accurately and efficiently is an invaluable feature to a flexible and adaptive human motor system. This can be examined in dual adaptation paradigms where the motor system is challenged to perform under randomly switching, opposing perturbations. Typically, dual adaptation doesn’t proceed unless each...
Wed, 07/07/2021 - 22:08
Journal of Basic Microbiology, EarlyView. In this study, lead (Pb) biosorption studies in aqueous solution were performed with metal-resistant Bacillus strain MRS-2 (ATCC 55674) bacterium which was previously isolated from wastewater plant. It showed minimum inhibition concentration of 300 ppm Pb on the nutrient agar plates. Pb biosorption using MRS-2 bacteria was investigated under different...
Wed, 07/07/2021 - 06:09
Author(s): Karl Bryan S. Perelonia, Kathlene Cleah D. Benitez, Riza Jane S. Banicod, Gezelle C. Tadifa, Flordeliza D. Cambia, Ulysses M. Montojo This paper describes the validation of analytical methods for the determination of heavy metals in fish and fishery resources by microwave assisted digestion method followed by Graphite Furnace Atomic Absorption Spectrometry (GFAAS) and Cold Vapor Atomic...
Tue, 07/06/2021 - 06:10
Author(s): Zhi Chen, Yan Liang, QinYue Lu, Mudasir Nazar, Yongjiang Mao, Ahmad Aboragah, Zhangping Yang, Juan J. Loor Cadmium is a common environmental heavy metal pollutant that can accumulate over long periods of time and cause disease. Thus, analysis of the molecular mechanisms affected by cadmium in the body could be of great significance for the prevention and treatment of cadmium-related...
Tue, 07/06/2021 - 02:02
Reliable stable indicators are very important for assessing soil quality. This paper compares the dynamics of microbial parameters in two different soils (rich/poor in organic carbon), contaminated in laboratory experiments with an equal dose of heavy metals (HMs) after 30 and 90 days. For this purpose, the changes in the number, biomass, and taxonomic structure of bacterial and fungal...
Tue, 07/06/2021 - 02:02
Concentrated pig production is a major source of environmental pollution. Metal–organic frameworks (MOFs) show potential for reducing heavy metal pollution. Two zirconium-based octahedral MOFs, UiO-66 and UiO-66-NH2, were prepared by solvothermal method and were characterized by XRD, SEM, FT-IR, and BET. The adsorption capacity, treatability, and reusability of the adsorbents were tested in batch...
Mon, 07/05/2021 - 04:03
OfChi-h, a lepidopteran-exclusive glycoside hydrolase family 18 (GH18) chitinase from the agricultural insect pest Ostrinia furnacalis, is a promising molecular target candidate for pest control and management. Berberine (BER), a traditional Chinese medicine, binds to a wide variety of glycosyl hydrolases via an identical mechanism, showing potential as a pesticide lead compound. In this work, we...
Mon, 07/05/2021 - 02:01
This study was carried out to investigate the efficacy of electrokinetics to remediate two identical soft kaolinite clay slurries with a water content of 70%. The first slurry was contaminated with copper at a concentration of 150 mg/kg of dry soil and the second with cadmium at the same concentration. The tests were performed in four identical electrokinetic columns (two for the electrokinetics...
Mon, 07/05/2021 - 02:01
Predation is known to play a prominent role in maintaining ecosystem structure and functioning. Despite metals being known to potentially affect predation in aquatic ecosystems, few studies have been conducted, so far, with the aim of evaluating this interplay. In the present study, the effects of four metal salts (copper, cadmium, mercury, and manganese) on the feeding rates and food preference...
Sun, 07/04/2021 - 22:07
Journal of Applied Microbiology, Accepted Article. Aims The study aims to identify a novel plant growth-promoting bacteria (PGPB), which contributes to promoting growth and reducing cadmium (Cd) concentration in rice under Cd-contaminated conditions. Methods and Results Nine bacterial strains were isolated from plants grown in Cd-contaminated soil. These bacteria were tolerant to 1000 μmol l...
Sun, 07/04/2021 - 06:07
Author(s): Lu Li, Fuhong Sun, Qun Liu, Xiaoli Zhao, Kang Song Lead is a widely distributed priority controlled heavy metals in aquatic system, its toxicity to aquatic organisms affected by water quality parameters. This study investigated the acute toxicity of lead (Pb) to the aquatic organisms in Taihu Lake under various water hardness, corresponding regional water quality criteria were derived...
Sat, 07/03/2021 - 06:09
Author(s): Lihong Su, Yongdong Xie, Zhongqun He, Jianwei Zhang, Yi Tang, Xiaoting Zhou Soil cadmium (Cd) contamination severely threatens human health. Therefore, screening and breeding low-Cd absorption cultivars of cherry tomato (Solanum lycopersicum L.) is essential to restrict human Cd intake. In this study, a hydroponic experiment was conducted to perform a comparative transcriptome analysis...
Sat, 07/03/2021 - 02:02
In this paper, a sensitive and simple zirconium nanoparticles (Zr-NPs) based vortex assisted ligandless dispersive solid phase extraction (VA-LDSPE) method was developed for the preconcentration of lead from wastewater samples for the determination by slotted quartz tube–flame atomic absorption spectrometry (SQT-FAAS). Zr-NPs were synthesized using zirconium (IV) chloride salt as a starting...
Sat, 07/03/2021 - 02:02
Abstract Aims Phosphorus (P) fertilizers are often considered an important source of cadmium (Cd) in crop plants. However, increased plant Cd concentrations are not strictly related to the Cd content of P fertilizers. Considering this, we hypothesized that, alternatively, reduction of arbuscular mycorrhizal colonization by P fertilization enhances Cd accumulation in plants. Methods Wheat and...
Thu, 07/01/2021 - 06:10
Author(s): Lu Huang, Xun Wang, Yihan Chi, Linan Huang, Wai Chin Li, Zhihong Ye Cadmium (Cd) and arsenic (As) contamination in paddy soils poses serious health risks to humans. The accumulation of Cd and As in rice (Oryza sativa L.) depends on their bioavailability, which is affected by soil physicochemical properties and soil microbial activities. However, little is known about the intricate...
Thu, 07/01/2021 - 00:00
Cadmium (Cd) is one of the most toxic pollutants for health due to its accumulation in several tissues, including testis. This report confirms that Cd increased oxidative stress and apoptosis of germ and somatic cells and provoked testicular injury, as documented by biomolecular and histological alterations, i.e., CAT and SOD activity, the protein level of steroidogenic enzymes (StAR and 3β-HSD...
Wed, 06/30/2021 - 04:04
The insect chitinase OfChtI from the agricultural pest Ostrinia furnacalis (Asian corn borer) is a promising target for green insecticide design. OfChtI is a critical chitinolytic enzyme for the cuticular chitin degradation at the stage of molting. In this study, piperine, a natural amide compound isolated from black pepper, Piper nigrum L., was discovered for the first time to have inhibitory...
Wed, 06/30/2021 - 02:03
Abstract Main conclusion Key miRNAs including sbi-miR169p/q, sbi-miR171g/j, sbi-miR172a/c/d, sbi-miR172e, sbi-miR319a/b, sbi-miR396a/b, miR408, sbi-miR5384, sbi-miR5565e and nov_23 were identified to function in the regulation of Cd accumulation and tolerance. Abstract As an energy plant, sweet sorghum shows great potential in the phytoremediation of Cd-contaminated soils. However, few studies...
Tue, 06/29/2021 - 16:00
The rapid development of antimalarial resistance motivates the continued search for novel compounds with a mode of action (MoA) different to current antimalarials. Phenotypic screening has delivered thousands of promising hit compounds without prior knowledge of the compounds’ exact target or MoA. Whilst the latter is not initially required to progress a compound in a medicinal chemistry program...
Mon, 06/28/2021 - 06:12
Author(s): Gang Zhou, Yuying Wu, Peifang Wang, Hao Li, Rong Huang, Yitong Liu, Junhong Guo Exploring photocatalysts to accelerate heavy metal Cr(VI) photoreduction is of great significance. Different from traditional strategies, this work proposes a simple and feasible strategy to construct cadmium/rhenium sulfide (CdS/ReS2) S-scheme heterojunctions for enhancing carrier separation through a...
Sun, 06/27/2021 - 06:11
Author(s): Song Cheng, Yongzhi Liu, Baolin Xing, Xiaojing Qin, Chuangxiang Zhang, Hongying Xia Biochar is produced at 400–800 °C by pyrolysis of poplar saw dust, which is used as the sustainable adsorbent to investigate the adsorption performance of Pb2+/Cd2+ from wastewater. The adsorption kinetics and isotherms of Pb2+/Cd2+ on biochar were determined. The maximum adsorption amount of Pb2+ is 62...
Sat, 06/26/2021 - 02:02
This study presents a successful treatment of biological acidic Se(IV)- and Cd(II)-containing wastewater via the SBR with limited carbon source (100 mg/L COD). Scanning electron microscopy coupled with energy dispersive X-ray spectroscopy (SEM-EDS), high solution transmission electron microscopy (HRTEM) and X-ray photoelectron spectrometer (XPS) results verified the formation of elemental Se and...
Sat, 06/26/2021 - 02:01
Lead (Pb) is one of the greatly toxic heavy metals that can enter into the biological system through food chain and induce serious health impairments. Lead ion (Pb (II)) can be released in the environment through natural and anthropogenic sources. Among different types of remediation techniques, adsorption is one of the most well-accepted techniques due to its economic feasibility and versatility...

Pages