Rhizosphere
·
2025
·
IF 3.5
Gen Li,Simiao Wang,Yijin Wang,Yibang Zhang,Qing Dang,Yashuo Tian,Longfei Li,Lijuan Wang,Li Han
Perilla frutescens is a medicinal plant that bioactive compounds such as perillaldehyde and luteolin, but cadmium (Cd) contamination threatens its safe cultivation and medicinal quality. While dark septate endophytes (DSEs) are known to increase plant stress tolerance, their strain-specific roles in regulating Cd uptake and secondary metabolite biosynthesis remain poorly understood. This study aimed to investigate three DSE strains, DSE6 ( Paraphoma radicina ), DSE7 ( P. chlamydocopiosa ), and MD3-1 ( Acrocalymma aquatica ), to determine their effects on growth, physiological traits, Cd accumulation, and key metabolite production in P. frutescens under 0, 1, 5, and 10 mg/kg Cd stress. DSE6 and DSE7 significantly reduced root Cd content and improved photosynthetic pigments, antioxidant activity, and biomass under moderate Cd levels. Notably, MD3-1 did not reduce Cd uptake but increased luteolin content by 22.67 % under high Cd stress, suggesting a decoupling between Cd accumulation and metabolite production. All three strains increased perillaldehyde content, with DSE7 showing the greatest increase (262 %) at 5 mg/kg Cd. These findings demonstrate that DSEs regulate Cd tolerance and medicinal quality via distinct mechanisms, and that internal metabolic tolerance may sustain bioactive compound synthesis under heavy metal stress. This highlights their potential as microbial agents for cultivating medicinal plants in contaminated soils.
研究领域:
植物学
·
植物生理学
·
微生物学
·
环境毒理学
·
植物化学
✓ 已验证
产品关联
DOI
高影响因子
SOUTH AFRICAN JOURNAL OF BOTANY
·
2024
·
IF 2.7
Xiaoyu Ren,Haiou Wang,Wenxuan Wang,Wenxiao Zhang,Qian Li
Combined contamination of Organophosphate esters (OPEs) and heavy metal has been concerning on their potential threaten to human health through food chain. In order to estimate effects of OPEs and heavy metal's combined contamination on crop, the growth of rice seedlings, pollutant accumulations and their involved in transcript regulation pathway under OPEs and Cd contamination were investigated. In results, only single OPEs pollution improved the biomass of rice, while single Cd pollution inhibited the growth of plants. Although the combined contaminations of OPEs and Cd also showed negative effect for plant growth, OPEs could alleviate the negative effect of Cd on rice. The Octanol-water partition coefficients (log K ow ) of OPEs were positively correlated with root concentration factor (RCF) values in the trend line and negatively correlated with shoot concentration factor (SCRF) and translocation factor (TF). OPEs and Cd inferred with each other's accumulations in plants through reducing RCF, SCRF and TF. After addition of Cd, the expressions of OsTIL, OsLTP4, OsLTPL1 , and OsMLP423 genes involved in OPEs accumulation were downregulated. Moreover, the presence of Cd also affected the binding sites and binding energy of the four proteins with OPEs. Meanwhile, the expression of OsNramp1, OsNramp5, OsHMA2, OsGS1 , and OsPCS1 genes involved in Cd accumulation and toleration were also downregulated after addition of OPEs. These results suggested that OPEs and Cd directly repressed each other gene transcript involved in accumulation and toleration process.
研究领域:
环境科学
·
植物学
·
分子生物学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Shuyue Feng,Chenqian Chen,Wenjuan Zhang,Jianyong Che,Chengyan Wang,Yongqiang Chen
Nickel and cadmium are critical materials in the clean energy sector, but their limited availability poses significant challenges. Recycling these metals from secondary sources can mitigate supply risks, yet their separation during recovery is often difficult, especially when striving to conserve energy and minimize environmental impact. This study proposed an electrochemical method for the efficient separation and recovery of cadmium from Cd-Ni solutions. Under optimal conditions of 0.5 V applied voltage, 10 g/L initial acid concentration, 50 °C temperature, and a 2h duration, over 95.6 % of cadmium was recovered with a purity of 93.3 %, while nickel loss was restricted to just 5.38 %. The high separation efficiency is attributed to the preferential reduction of cadmium over nickel, even at low concentrations, as confirmed by impedance spectroscopy and SEM analysis. Cadmium deposition occurred exclusively at the anode, with minimal nickel loss primarily resulting from the formation of Ni(OH) 2 . Kinetic analyses revealed that zinc dissolution at both the anode and cathode followed a first-order rate, with the anode dissolving more rapidly, thereby facilitating cadmium deposition. This method offers a sustainable option for recovering these metals from secondary sources by effectively integrating electrochemical and cementation processes.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Xueyu Nie,Dongyue Luo,Huifen Ma,Longyan Wang,Chao Yang,Xike Tian,Yulun Nie
Currently, planting selenium-rich crops using inorganic selenium such as selenate and selenite is used to address human selenium deficiency problems. In this paper, besides the above two traditional inorganic selenium speciation, we chose a new organic selenium speciation of potassium selenocyanoacetate to investigate the different effects of selenium speciation on selenium absorption, selenium transformation and cadmium antagonism via foliar application. Planting experiments showed that the selenium content of garlic bulbs treated with organic selenium was 1.8–3.9 times higher than that of inorganic selenium. Additionally, the absorption and transformation efficiency of organic selenium in garlic was also the highest, reaching over 95 %. Importantly, it was noteworthy that the cadmium content in bulbs treated with organic selenium was significantly lower than the Chinese food safety standard (0.2 mg/kg). Hence, this study provides an efficient organic selenium speciation which is beneficial to meet human selenium requirements and ensure safe utilization of cadmium-contaminated soils.
研究领域:
植物学
·
环境科学
·
营养学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2021
·
IF 7.963
Yan Li,Liangmin Gao,Yu Wang,Shuo Cheng,Guowei Wu,Xuan Yang,Shunli Wan
Biochar-supported metallic oxides are attractive adsorbents for heavy metal cleanup, but the adsorption performance is still unsatisfactory as a result of the self-aggregation of the incorporated metallic oxides. A new hybrid nano-material was prepared through impregnating hydrated ferric oxide (HFO) nanoparticles within biochar bearing high-density charged oxygen-containing groups (e.g., carboxyl and hydroxyl groups) (ABC) derived from HNO 3 treatment. The as-made adsorbent, denoted as HFO-ABC, possesses highly dispersed HFO nanoparticles with typical size lower than 20 nm, and exhibits greater sorption capacity for Cd(II) and Cu(II) than the pristine biochar-supported HFO. It also shows great sorption preference toward Cd(II) and Cu(II) in co-presence of high levels of Ca 2+ , Mg 2+ and humic acid (HA). Such prominent performance is put down to the high-density charged functional groups on the host ABC, which not only promote the dispersion of the immobilized HFO nanoparticles but also generate the potential Donnan membrane effect, i.e., the pre-concentration and permeation of target metals prior to their preferable adsorption by nano-HFO. The predicted effective coefficients of intra-particle diffusion for Cu(II) and Cd(II) are 3.83 × 10 −9 and 4.33 × 10 −9 cm 2 /s, respectively. HFO-ABC exhibits excellent performance for fixed-bed column application, and yields 513 and 990 BV effluents for Cd(II) and Cu(II) to achieve their discharge standards, respectively. The spent HFO-ABC could be in situ regenerated using binary HCl-CaCl 2 solution with desorption efficiency higher than 95%. All results manifest that increasing charged functional groups via HNO 3 treatment is an effective measure for boosting sorption performance of biochar-based nanocomposites.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
Journal of Toxicologic Pathology
·
2016
·
IF 0.848
Yuan Yuan,Shixun Ma,Yongmei Qi,Xue Wei,Hui Cai,Li Dong,Yufeng Lu,Yupeng Zhang,Qingjin Guo
The objective of the current study was to explore the inhibitory effects of quercetin on cadmium-induced autophagy in mouse kidneys. Mice were intraperitoneally injected with cadmium and quercetin once daily for 3 days. The LC3-II/β-actin ratio was used as the autophagy marker, and autophagy was observed by transmission electron microscopy. Oxidative stress was investigated in terms of reactive oxygen species, total antioxidant capacity, and malondialdehyde. Cadmium significantly induced typical autophagosome formation, increased the LC3-II/β-actin ratio, reactive oxygen species level, and malondialdehyde content, and decreased total antioxidant capacity. Interestingly, quercetin markedly decreased the cadmium-induced LC3-II/β-actin ratio, reactive oxygen species levels, and malondialdehyde content, and simultaneously increased total antioxidant capacity. Cadmium can inhibit total antioxidant capacity, produce a large amount of reactive oxygen species, lead to oxidative stress, and promote lipid peroxidation, eventually inducing autophagy in mouse kidneys. Quercetin could inhibit cadmium-induced autophagy via inhibition of oxidative stress. This study may provide a theoretical basis for the treatment of cadmium injury.
研究领域:
毒理学
·
药理学
·
分子生物学
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Xueying Guo,Zhiwei Peng,Danlian Huang,Piao Xu,Guangming Zeng,Shuang Zhou,Xiaomin Gong,Min Cheng,Rui Deng,Huan Yi,Hao Luo,Xuelei Yan,Tao Li
Microorganism biotransformation of sulfamethazine (SMT) in aqueous environments is a major concern, especially considering their exposure to coexisting SMT and heavy metals. Phanerochaete chrysosporium ( P. chrysosporium ) is a more concerned Cadmium (Cd) and SMT hyper accumulation specie. This study, referring to metabolic mechanisms and application, was performed to investigate the single and combined effects of Cd-SMT, including toxicity, resistance, as well as the accumulation and biotransformation by P. chrysosporium . The results revealed that Cd-SMT co-contamination caused increasing active oxygen accumulation, and the number of antioxidant enzyme and non-enzymatic antioxidants were higher than that under the stress of their individual pollution. It was found that P. chrysosporium accumulated high levels of Cd with the increment of 6.98–23.96% induced by Cd-SMT co-contamination compared to under the stress of Cd individual pollution. What's more, the addition of Cd reduced the toxicity of SMT to P. chrysosporium . The decrease of malonaldehyde and the increase of protein also proved that P. chrysosporium held enormous potential to fit in the co-contaminated environment, and to remediate the co-contaminated water especially in the long-term treatment. These results undoubtedly contribute to the development of fungi-based technologies and the applications of P. chrysosporium in realistic environment rather than laboratory simulation environment.
研究领域:
环境科学
·
微生物学
✓ 已验证
DOI
高影响因子
Water
·
2021
·Vol. 13
·期 18
·2498
·
IF 3.103
Wenlong Lu,Yifeng Xu,Chuanzhou Liang,Baba Imoro Musah,Lai Peng
The biosorption behaviour of arsenic(V) and cadmium(II) ions by unmodified and five types of chemically modifiedChlorella vulgarisandSpirulina platensiswas investigated. The biosorption rates of As(V) and Cd(II) in binary metal solutions were lower than those in sole metal systems, which exhibited a competition between As(V) and Cd(II) ions to occupy the active sites of the adsorbent. Among the five chemical reagents, NaCl and ZnCl2were the most suitable modifiers for improving the biosorption performance ofC. vulgarisandS. platensis, respectively. The maximum biosorption capacities of As(V) and Cd(II) were: (a) 20.9 and 1.2 mg/g, respectively, forC. vulgarismodified with NaCl; (b) 24.8 and 29.4 mg/g, respectively, forS. platensismodified with ZnCl2, which were much higher than those using other chemically modifying methods. The pseudo-second-order kinetic model fitted well with all the biosorption processes. The SEM analysis revealed that the modification changed the surface morphologies and enhanced the porosity of the algae biomass. The FTIR analysis established the presence of diverse groups of compounds that were largely hydroxyl, carboxylate, amino, and amide groups on the adsorbents that contributed significantly to the upregulated biosorption. This work showed the potential application of chemically modifiedC. vulgarisandS. platensisbiomasses to effectively remove both from water.Keywords:arsenic;cadmium;simultaneous biosorption;algae;chemical modification
研究领域:
环境科学
·
生物学
✓ 已验证
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2024
·Vol. 171
·期 12
·122503
·
IF 3.1
Yanhong Jia,Hong Zhang,Ahmet Burak Çubuk,Biao Wu,Shaoqiang Guo
A mesh-type assembly and stirrer assembly were developed to improve the performance of liquid cadmium cathodes for the electrodeposition of U and Ce from LiCl-KCl molten salt at 773 K. The thermodynamic basis for electrodepositing U and Ce was established through the calculation of equilibrium potentials and cyclic voltammograms, while also examining the co-deposition of Li. Thereafter, U and Ce electrodeposition was performed by galvanostatic electrolysis, and the current efficiency was determined. It was found that both assemblies effectively hampered the growth of U dendrites and Ce-Cd dendritic alloys. However, the utilization of the mesh-type assembly resulted in a greater current efficiency for U, with the maximum deposited amount attaining 7.7 wt% U/Cd without causing U dendrites formation. In contrast, the current efficiency for Ce was enhanced after using the stirrer assembly due to an improved diffusion flux of Ce ions. Finally, cathode deposits were characterized by scanning electron microscopy, energy-dispersive spectroscopy, and X-ray diffraction, which revealed that disrupted fine U dendrites were randomly scattered in the Cd bulk, and that the CeCd11 dendritic alloys were also damaged, leading to an increased atomic ratio of Ce to Cd at the Cd bottom.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2024
·Vol. 31
·期 39
·52582-52595
·
IF 0
Zhou Hao,Dang Yan,Chen Xinyu,Ivanets Andrei,Ratko Alexander A.,Kouznetsova Tatyana,Liu Yongqi,Yang Bo,Zhang Xulong,Sun Yiwei,He Xiaoyan,Ren Yanjie,Su Xintai
Due to industrialization, soil heavy metal pollution is a growing concern, with humic substances (HS) playing a pivotal role in soil passivation. To address the long duration of the compost humification problem, coal fly ash (CFA) in situ catalyzes the rapid pyrolysis of the cotton stalk (CS) to produce HS to address Cd passivation. Results indicate that the highest yield of humic acid (HA) (8.42%) and fulvic acid (FA) (1.36%) is obtained when the CS to CFA mass ratio is 1:0.5, at 275 ℃ for 120 min. Further study reveals that CFA catalysis CS humification, through the creation of alkaline pyrolysis conditions, Fe 2 O 3 can stimulate the protein and the decomposition of hemicellulose in CS, and then, through the Maillard and Sugar-amine condensation reaction synthesis HA and FA. Applying HS-CS&CFA in Cd-contaminated soil demonstrates a 26.69% reduction in exchangeable Cd within 30 days by chemical complexation. Excellent maize growth effects and environmental benefits of HS products are the prerequisites for subsequent engineering applications. Similar industrial solid wastes, such as steel slag and red mud, rich in Fe 2 O 3 , can be explored to identify their catalytic humification effect. It could provide a novel and effective way for industrial solid wastes to be recycled for biomass humification and widely applied in remediating Cd-contaminated agricultural soil.
研究领域:
环境科学
·
土壤修复
✓ 已验证
产品关联
DOI
PubMed
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2016
·
IF 3.782
Changkun Liu,Xiaoyan Liang,Ji’an Liu,Xiaobin Lei,Xinzhen Zhao
In this study, a porphyrin functionalized cotton fiber was prepared and investigated for the visual detection and efficient adsorption of cadmium (Cd 2+ ) ions in aqueous solutions. The pristine cotton fiber was first grafted with poly (3-sulfopropyl methacrylate potassium salt) (PSMP) via the surface-initiated atom transfer radical polymerization (SI-ATRP), and subsequently immobilized with 5,10,15,20-tetrakis(1-methy-4-pyridinio)porphyrin tetra(p-toluenesulfonate) (TMPyP), to form the CPT (Cotton-PSMP-TMPyP) material. The CPT was characterized by SEM, FTIR, XPS and elemental analysis, and examined for the detection and adsorption of cadmium ions. The influencing factors such as pH and the initial cadmium ion concentrations on the adsorption performances were investigated. Results showed that the cadmium ion adsorption isotherm was best fitted with the Langmuir isotherm model, with the derived maximum adsorption capacity of 0.8638 mmol/g. The thermodynamic study showed the endothermic nature of the adsorption process. In addition, the adsorption kinetics was fast with over 90% of the total cadmium ions adsorbed within 2 min. Furthermore, the distinctive color response of the CPT to the cadmium ions in aqueous solutions was clearly displayed. A linear relationship between the light absorbance of CPT-Cd (CPT adsorbed with cadmium ions) and the initial concentrations of cadmium ions was successfully established, which could be used for the fast determination of the cadmium ion concentrations in aqueous solutions.
研究领域:
环境科学
·
材料科学
·
化学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Guanqiong Li,Tong Xu,Ruifang He,Chunping Li,Jie Bai
Photocatalytic water splitting is a promising method to obtain clean hydrogen energy, and the corresponding catalyst has received extensive attention. Among them, cadmium sulfide (CdS) has a relatively narrow band gap (2.4 eV) and a high conduction band position. It can be considered to be a good visible light photocatalyst in response to visible light. However, its application is limited because the existence of rapid photo-electron-hole recombination and photo-corrosion. In this work, a series of hollow CdS tubes have been successfully prepared with the novel morphology via simple one-step solvo-thermal method. The as-prepared catalysts displayed great photocatalytic activity for photocatalytic split water product H 2 under light (λ ≥ 350 nm). Due to the presence of the solvent carbon layer, the photo-corrosion of CdS was prevented, so it had good cycle performance. Meanwhile, the appropriate mole of cadmium sulfur dosage was explored and found that 3 mmol was the most suitable. The CdS-3 sample performed the optimal hydrogen (H 2 ) evolution rate (312.6 μmol g −1 h −1 ) within 4 h. In addition, based on various characterization results of the photocatalyst, the novel structure and probable catalytic mechanism were further explored.
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）