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Genome-Wide Exploration of Mtp Gene Family in Mustard (Brassica Juncea L.): Expression Networks Revealed the Underlying Core Modules and Specific Response Patterns Under Heavy Metal Stress

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SSRN 2024年

作者： You, Liang Chen, Hao Jiang, Guoxiang Yuan, Jiong Yuan, Yuhui Yan, Mingli Hu, Junhe Xiang, Guohong Duan, Renyan Chen, Yong Liu, Xianjun College of Agriculture and biology Hunan University of Humanities Science and Technology Key Laboratory of Development and Utilization and Quality and Safety Control of Characteristic Agricultural Resources in Central Hunan of College of Hunan Province Hunan Loudi417000 China College of Agronomy Hunan Agricultural University Changsha410128 China Crop Research Institute Hunan Academy of Agricultural Sciences Changsha410125 China

The Metal Tolerance Protein (MTP) family members play a crucial role in the transport and tolerance of divalent metal cations. However, a comprehensive study of MTP genes in Brassica juncea and their expression patterns under heavy metal (HM) exposure remains unclear. In this study, we identified 33 BjMTP genes through the HMMER program (Cation_efflux;PF01545) and BLAST analysis. Subsequently, these 33 BjMTP members were subjected to a series of bioinformatics methods, including physicochemical properties, phylogenetic tree, conserved motifs, protein structures, collinearity, spatiotemporal expression patterns by RNA-seq data, GO enrichment, and expression profilings under six HM stresses. As a result, the BjMTP genes were classified into three subgroups (Zn-CDF, Zn/Fe-CDF, and Mn-CDF) and seven branches (G1, G4, G5, G6, G7, G8, and G12). We also successfully identified specific genes and crucial expression modules within the BjMTP family genes that respond to various HM stresses. Notably, ***4 and ***5 exhibited strong responses to all six HM inductions, suggesting their vital role in facilitating plant tolerance to HM stresses. These findings provide excellent gene resources for the genetic improvement of HM-tolerant rapeseed and the remediation of HM-contaminated soils. © 2024, The Authors. All rights reserved.

关键词： Heavy metals

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Study of the Interaction Mechanism between Human Serum Albumin and Ti3c2tx with Different Degrees of Oxidation by Multi-Spectroscopic Method and Molecular Docking

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SSRN 2022年

作者： Tan, Chunhu Zhang, Tingting Wang, Gongyin Zhang, Libin Liu, Chang Li, Weihua Li, Jiansheng Lu, Rui Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological Engineering Nanjing University of Science and Technology Nanjing210094 China Information Materials and Intelligent Sensing Laboratory of Anhui Province Anhui University Hefei230601 China School of Environment and Energy Engineering Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse Anhui Jianzhu University Hefei230601 China

At present, despite the wide application of Ti3C2Tx in various fields, little information is available regarding its toxicity to humans, thus, it is necessary to study its interactions with human proteins as well as its biotoxicity. In the present study, spectroscopic analysis and molecular simulation were used to investigate the interaction mechanism between human serum albumin (HSA) and Ti3C2Tx with different oxidation degrees. The three prepared Ti3C2Tx materials with different oxidation degrees were analyzed by X-ray diffractometer, X-ray photoelectron spectroscopy, scanning electron microscope and transmission electron microscope, and the results demonstrate that TiO2 nanoparticles are formed during the oxidation process. In conclusion, the results of the ultra violet spectrum, fluorescence spectra and zeta potential measurements showed that fully oxidized Ti3C2Tx (F-Ti3C2Tx) has a greater binding ability to HSA than unoxidized Ti3C2Tx (U-Ti3C2Tx), followed by partially oxidized Ti3C2Tx (P-Ti3C2Tx). Based on synchronous fluorescence, circular dichroism and infrared characterization, it has been determined that with a gradual increase of Ti3C2Tx oxidation degree, its effect on the conformation of HSA increases, followed by F-Ti3C2Tx > P-Ti3C2Tx > U-Ti3C2Tx. Further analysis of the fluorescence binding ability revealed that hydrogen bonds play the major role in the interaction between HSA and Ti3C2Tx. © 2022, The Authors. All rights reserved.

关键词： Fourier transform infrared spectroscopy

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Effect of Polystyrene Microplastics on Tetracycline Photoconversion Under Simulated Sunlight: Vital Role of Aged Polystyrene

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SSRN 2023年

作者： Wang, Zhexian Zhai, Yunbo Liu, Guangli Liu, Xiangmin Liu, Xiaoping Zhou, Yin Huang, Cheng Wang, Wenjun Xu, Min College of Environmental Science and Engineering Hunan University Changsha410082 China Key Laboratory of Environmental Biology and Pollution Control Hunan University Ministry of Education Changsha410082 China Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology School of Environmental Science and Engineering Sun Yat-Sen University Guangzhou510006 China School of Resources and Environment Hunan University of Technology and Business Changsha410205 China Chinese Academy of Environmental Planning Beijing100012 China

Photoconversion of tetracycline (TC) has been widely reported, but the effect of microplastics (MPs) on TC conversion kinetics and mechanism is rarely discussed. In this study, the effect of (aged) MPs on TC degradation under simulated sunlight was investigated, and the mechanism was also discussed. The physical and chemical properties of polystyrene (PS), including particle size, surface groups and morphology, were significantly changed after aging. Furthermore, photoconversion efficiency of TC was suppressed with the spiking of aged PS, while virgin PS presented opposite tendency. 1O2 and HO were involved in the photodegradation reaction for photosensitization of PS, and light-screening of aged PS occupied predominance, which weakened direct UV-light absorption of TC and resulted in lower TC degradation efficiency. In addition, triplet-excited state PS generated after photon acceptance of aged PS, which could transfer energy to O2, and further caused the production of 1O2. The toxicity test manifested that the direct influence of TC products on fathead minnow was ignorable, but its long-term negative effect on growth deserved to observe. This study is beneficial for understanding the environmental fate of PS and TC under sunlight, and provides crucial reference information for better evaluating the potential risk of MPs and chemicals. © 2023, The Authors. All rights reserved.

关键词： Polystyrenes

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Sustainable Agricultural Water Supply: Atmospheric Water Harvesting with Degradable and Biosafe Hydrogel

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SSRN 2024年

作者： Bai, Meng Hou, Yahui Li, Gang Fang, Jing Wu, Xingjiang Zhou, Yingtang Qi, Junjie Yang, Zhensheng Li, Hao National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization School of Chemical Engineering and Technology Hebei University of Technology Tianjin300401 China Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control Marine Science and Technology College Zhejiang Ocean University Zhejiang Province Zhoushan316004 China

Seventy percent of global freshwater resources are consumed by agriculture, leading to severe water shortages due to the increasing demand for water in irrigated agriculture, which in turn poses a significant threat to food security. To address this challenge, innovative solutions are needed to optimize water use in agriculture. In this study, sodium lignosulfonate/chitosan/calcium chloride amphiphilic collection hydrogel (CSL-CaCl2) is prepared. This hydrogel captures water from the atmosphere for soil water harvesting, thereby reducing the requirement for irrigation water. The hydrogel captures moisture from the air through its salt and porous structures, transferring it to a polymer network for storage. When exposed to daylight, the water-absorbed hydrogel is able to quickly release water into the soil, increasing the soil water content. The amount of water released from the hydrogel is 0.81 kg∙m-2, equivalent to increasing the average annual precipitation in the temperate monsoon climate zone (i.e., Tianjin, China) by 51%, which could effectively reduce the demand for agricultural irrigation water. The hydrogel not only promotes plant growth, but also has excellent water retention, improved soil physicochemical properties and exhibits excellent degradability. This work provides important insights for alleviating water shortages in irrigated agriculture. © 2024, The Authors. All rights reserved.

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Reversing inhibition to promotion in phenol-ammonium metabolism via algal-microbial fuel cell: Mechanisms of phenol-ammonium interaction and synergistic removal

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Journal of Hazardous Materials 2025年 493卷 138417页

作者： Liu, Yaqi Zheng, Mengqi Lv, Longyi Chen, Guowei Wang, Chengye Hu, Zhenhu Feng, Jingwei Xie, Binghan Han, Hongjun Wang, Wei Department of Municipal Engineering School of Civil Engineering Hefei University of Technology Hefei230009 China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology Harbin150090 China Anhui Province Key Laboratory of Industrial Wastewater and Environmental Treatment Hefei230024 China Anhui Provincial Engineering Laboratory for Rural Water Environment and Resources Hefei230009 China Tianjin Key Laboratory of Clean Energy and Pollution Control School of Energy and Environmental Engineering Hebei University of Technology Tianjin300401 China

Addressing the challenge of metabolic inhibition between phenol and ammonium in coal gasification wastewater (CGW), this study introduced a novel algal-microbial fuel cell (AMFC). It combined the advantages of electroactive bacteria and Synechocystis to achieve synergistic metabolism, establishing a cooperative mechanism for pollutant separation and enhanced transformation to achieve the mutual promotion of phenol and ammonium removal. Remarkably, raising phenol to 1500 mg COD/L boosted ammonium removal by 31.51 % in AMFC, due to a consistently higher potential difference than the control, which enhanced extracellular electron transfer (EET) via conductive nanowire and drove ammonium migration. Similarly, elevating ammonium concentration to 150 mg/L resulted in an 11.79 % increase in phenol removal efficiency, driven by superior solution conductivity and EET, as well as more electron acceptors (oxygen) from the algal cathode. This system challenged the conventional understanding of the antagonistic relationship between phenol and ammonium. Under high phenol conditions, the electroactive bacteria Clostridium sensu stricto 1 and Acinetobacter, Perlucidibaca formed a synergistic metabolic network, whereas Zoogloea, Ideonella, and other phenol-degrading bacteria were significantly enriched in high ammonium environments. The AMFC represented a breakthrough in reversing the metabolic inhibition between phenol and ammonium, providing a novel and energy-efficient strategy for treating complex industrial wastewater. © 2025 Elsevier B.V.

关键词： Microbial fuel cells

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Fabrication of an Ag-Based Sers Nanotag for Histamine Quantitative Detection

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SSRN 2022年

作者： Zhang, Tingting Wang, Gongying Bao, Juan Liu, Chang Li, Weihua Sun, Xiuyun Li, Jiansheng Lu, Rui Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological Engineering Nanjing University of Science and Technology Nanjing210094 China Information Materials and Intelligent Sensing Laboratory of Anhui Province Anhui University Hefei230601 China School of Environment and Energy Engineering Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse Anhui Jianzhu University Hefei230601 China

A crucial issue in analytical science and physiology is the detection of histamine with high sensitivity, specificity and credibility, which served as an important neurotransmitter in biofluids. Despite the high sensitivity of surface-enhanced Raman spectroscopy (SERS) at the level of single molecule, there are still challenges in providing high sensitivity for histamine with a small cross section. For the selective detection of histamine using SERS, a highly sensitive sandwich structure substrate combining Fe3O4 and an Ag-based SERS nanotag was developed. The Fe3O4@SiO2-COOH served as a capture component for enriching histamine. Upon functionalized Ag nanoparticles with glycine (Gly) and (3-Aminopheyonyl) boronic acid (APBA), they were then used to connect with histamine and serve as a SERS nanotag, respectively. A linear relationship between the Raman intensity and the histamine concentration was observed over the range 10-4-10-8 M with a limit of detection of 7.24×10-9 M. This methodology also exhibited good selectivity in the presence of other neurotransmitters. With our new approach, histamine can be detected sensitively and reliably in fish samples, which indicates the potential prospect of an effective method for analyzing histamine in complex specimens. © 2022, The Authors. All rights reserved.

关键词： Magnetite

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Current progress on fluoride occurrence in the soil environment: Sources, transformation, regulations and remediation

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Chemosphere 2023年第1期341卷 139901页

作者： Wang, Minghan Wang, Haoyang Lei, Ge Yang, Biao Hu, Teng Ye, Yingying Li, Wei Zhou, Yaoyu Yang, Xiao Xu, Huaqin College of Environment and Ecology Hunan Agricultural University Changsha410128 China School of Biology and Chemistry Key Laboratory of Chemical Synthesis and Environmental Pollution Control-Remediation Technology of Guizhou Province Minzu Normal University of Xingyi Xingyi562400 China Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing100101 China

Fluorine is a halogen element widely distributed in nature, but due to excessive emissions from industrial manufacturing and agricultural production, etc., the soil is over-enriched with fluoride and the normal growth of plants is under stress, and it also poses a great threat to human health. In this review, we summarized the sources of fluoride in soil, and then analyzed the potential mechanisms of fluoride uptake in soil-plant systems. In addition, the main influences of soil ecosystems on plant fluoride uptake were discussed, soil management options to mitigate fluoride accumulation in plants were also summarized. The bioremediation techniques were found to be a developmental direction to improve fluoride pollution. Finally, we proposed other research directions, including fluoride uptake mechanisms in soil-plant systems at the molecular expression levels, development of visualization techniques for fluoride transport in plants, interactions mechanisms between soil microhabitats and plant metabolism affecting fluoride uptake, as well as combining abiotic additives, nanotechnology and biotechnology to remediate fluoride contamination problems. © 2023

关键词： Soils

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Porous pillararene-based polymer as adsorbent and solid disinfectant for water treatment

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Chemosphere 2023年 341卷 140056页

作者： Xu, Guizhou Yang, Pingping Zhang, Yalan Sun, Lin Hu, Xuejiao Zhang, Wenrui Tu, Yizhou Tian, Yuansong Li, Aimin Xie, Xianchuan Gu, Xueyuan State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China Key Laboratory of Poyang Lake Environment and Resource Utilization Ministry of Education School of Resources and Environment Nanchang University Nanchang330031 China Jiangxi Nanxin Environmental Protection Technology Co. LTD Jiujiang City of Jiangxi Province 330300 China Nanjing University & Yancheng Academy of Environment Protection Technology and Engineering Nanjing210023 China

Pillararene polymers have been widely used as excellent adsorbents for water treatment, but pillararene polymers with ultra-high specific surface area and versatility are still rarely reported. Herein, a quaternary ammonium salt modified pillar [5] arene polymer, QPBP [5], with specific surface area of 1844 m2 g−1 was successfully synthesized. Since QPBP [5] has abundant different adsorption sites, it exhibits excellent performance for the simultaneously removal of organic pollutants with different charges from water. The selected three model pollutants, Rhodamine B (RhB, positively charged), Sulfamethazine (SMT, electrically neutral) and Fulvic acid (FA, negatively charged), could be rapidly and efficiently removed from water by QPBP [5] within 10 min, which are much faster than them by most of the reported adsorbents. RhB and SMT are mainly adsorbed through hydrophobic interactions with the QPBP [5] surface, while FA is mainly removed through ion exchange. In addition, QPBP [5] also showed excellent reusability and adsorption performance for the environmentally relevant concentration of pollutants. Furthermore, the quaternary ammonium groups on QPBP [5] makes it a solid disinfectant with excellent antibacterial properties. In conclusion, QPBP [5] is a promising multifunctional adsorbent for the treatment of complex pollutants in water. © 2023 Elsevier Ltd

关键词： Adsorption

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Enhanced removal of I^- on hierarchically structured layered double hydroxides by in suit growth of Cu/Cu2O

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Journal of Environmental Sciences 2020年第2期32卷 338-348页

作者： Jiuyu Chen Junyi Wang Qianhong Gao Xiaomei Zhang Ying Liu Peng Wang Yan Jiao Zongxiang Zhang Yi Yang Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological EngineeringNanjing University of Science and TechnologyNanjing 210094China Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control(AEMPC)Nanjing University of Information Science&TechnologyNanjing 210044China Jiangsu Environmental Protection Key Laboratory of Monitoring for Organic Pollutants in Soil Taizhou Environmental Monitoring CenterTaizhou 225300China

To further improve the removal ability of layered double hydroxide(LDH) for iodide(I^-) anions from wastewater, we prepared hierarchically porous Cu5Mg10Al5-LDH and used as a matrix for in suit growth of Cu/Cu2O on its surface, forming Cu/Cu2O-LDH, which was characterized and applied as an *** displayed high I^-saturation uptake capability(137.8 mg/g) of Cu/Cu2O-LDH compared with Cu5Mg10Al5-LDH(26.4 mg/g) even thermal activated LDH(76.1 mg/g).Thermodynamic analysis showed that the reaction between I^-anions and Cu/Cu2O-LDH is a spontaneous and *** kinetics analysis exhibited that adsorption equilibrium can be reached after 265 ***, the adsorbent showed satisfactory selectivity in the presence of competitive anions(e.g., SO4^2-), and could achieve good adsorption performance in a wide pH range of 3–8.A cooperative adsorption mechanism was proposed on the basis of the following two aspects:(1) ion exchange between iodide and interlayer anions;(2) the adsorption performance of Cu, Cu(Ⅱ) and Cu2O for I^-.Meanwhile, the difference between the adsorption mechanism of Cu/Cu2O-LDH, Cu5Mg10Al5-LDH and Cu5Mg10Al5-CLDH adsorbents was also elaborated and verified.

关键词： Layered double hydroxide Cu/Cu2O Iodide adsorption Hierarchical structure In suit growth

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Reveal Brønsted–Evans–Polanyi relation and attack mechanisms of reactive oxygen species for photocatalytic H2O2 production

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Applied Catalysis B: Environmental 2022年 301卷 120757-120757页

作者： Luo, Jun Fan, Changzheng Tang, Lin Liu, Yani Gong, Zhixuan Wu, Tangshan Zhen, Xinlan Feng, Chengyang Feng, Haopeng Wang, Lingling Xu, Liang Yan, Ming Hunan University Changsha410082 China Key Laboratory of Water Pollution Control Technology Hunan Research Academy of Environmental Sciences Changsha410004 China Key Laboratory for Micro-Nano Physics and Technology of Hunan Province School of Physics and Electronics Hunan University Changsha410082 China Energy Materials Computing Center Jiangxi University of Science and Technology Nanchang330013 China

The generation of H+ by active species attacking proton donor (PD) is a key step in photocatalytic H2O2 production (PHP). Deeply analyzing the involved mechanism may be a crucial factor to break through the bottleneck of H2O2 yield. Here, nitrogen-deficient and boron-doped g-C3N4 are synthesized for PHP and the interaction mechanisms between active species and PD are revealed. The prepared photocatalyst exhibits a high H2O2 production rate (455 μM h−1 g−1). The 1O2, •O2- and hole promoted by modification site dominate twelve different reaction mechanisms, respectively. For the oxidation pathways dominated by hole, H2O2 generation is limited by the dissociation of PD or desorption of H+ on catalyst surface. Interestingly, •O2- and 1O2 could directly attack PD, or diffuse into solution to react with PD to produce H2O2 with lower barriers. Moreover, there is a synergistic effect between doped-boron, 1O2 and water bridge, which further reduces the reaction barrier. © 2021 Elsevier B.V.

关键词： Oxygen

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