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Morphofunctional characterization of hemocytes in black soldier fly larvae

Insect science 2023年第4期30卷 912-932页

作者： Daniele Bruno Aurora Montali Marzia Gariboldi Anna Katarzyna Wronska Agata Kaczmarek Amr Mohamed Ling Tian Morena Casarteli Gianluca Tettamanti Department of Biotechnology and Life Sciences University of InsubriaVareseItaly Host Parasites Molecular Interaction Research Unit Witold Stefanski Institute of ParasitologyPolish Academy of SciencesWarsawPoland Department of Entomology Faculty of ScienceCairo UniversityGizaEgypt Guangdong Provincial Key Laboratory of Agro-animal Genomics and Molecular Breeding Guangdong Provincial Sericulture and Mulberry Engineering Research CenterCollege of Animal ScienceSouth China Agricultural UniversityGuangzhouChina Department of Biosciences University of MilanoMilanoItaly Interuniversity Centerfor Studies on Bioinspired Agro-environmental Technology(BAT Center) University of Napoli Federico llPorticiItaly

In insects,the cell-mediated immune response involves an active role of hemo-cytes in phagocytosis,nodulation,and *** these processes have been well documented in multiple species belonging to different insect orders,information con-cerning the immune response,particularly the hemocyte types and their specific function in the black soldier fly Hermetia illucens,is still *** is a serious gap in knowledge given the high economic relevance of *** larvae in waste management strategies and considering that the saprophagous feeding habits of this dipteran species have likely shaped its immune system to efficiently respond to *** present study repre-sents the first detailed characterization of black soldier fly hemocytes and provides new insights into the cell-mediated immune response of this *** particular,in addition to prohemocytes,we identified five hemocyte types that mount the immune response in the larva,and analyzed their behavior,role,and morphofunctional changes in response to bac-terial infection and injection of chromatographic *** results demonstrate that the circulating phagocytes in black soldier fly larvae are *** cells also take part in nodulation and encapsulation with granulocytes and lamellocyte-like cells,devel-oping a starting core for nodule/capsule formation to remove/encapsulate large bacterial aggregates/pathogens from the hemolymph,*** processes are supported by the release of melanin precursors from crystal cells and likely by mobilizing nutrient reserves in newly circulating adipohemocytes,which could thus trophically support other hemocytes during the immune ***,the regulation of the cell-mediated im-mune response by eicosanoids was investigated.

关键词： eicosanoids encapsulation hemocytes Hermetia illucens immunity phagocytosis

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The elevation of salinity above 1% deteriorated nitrification performance and reshaped nitrifier community of an MBR: An often overlooked factor in the treatment of high-strength ammonium wastewater

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Chemosphere 2023年第1期335卷 139072页

作者： Zou, Jie Zhang, Kaoming Wang, Sifang Li, Mingji Wang, Zijia Wang, Shu Li, Yangkai Deng, Yuepeng Li, Xiuying Wang, Depeng Yang, Yunhua Feng, Yiping Hu, Chun Wang, Zhu Institute of Environmental Research at Greater Bay Key Laboratory for Water Quality and Conservation of the Pearl River Delta Ministry of Education Guangzhou University Guangzhou510006 China State Key Laboratory of Pollution Control and Resources Reuse School of the Environment Nanjing University Nanjing210023 China Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and Engineering Institute of Environmental Health and Pollution Control Guangdong University of Technology Guangzhou510006 China

The effects of synchronous variations of influent salinity with the elevation of NH4+-N concentration on nitrification performance and microbial community structure of bioreactor are often ignored. In this study, we investigated the dynamic response of nitrifying activated sludge to synchronously increased salinity and ammonia loading rate (ALR) in a nitrification membrane bioreactor (MBR). We found that the increase in influent salinity above 1% (from 0.91 to 1.32%) led to the deterioration of the nitrification performance of the MBR. The combined inhibition effect of salinity (1.32%), free ammonia (FA, an average of 1.37 mg/L), and free nitrous acid (FNA, an average of 0.155 mg/L) on nitrite-oxidizing bacteria (NOB) resulted in long-term (35 days) nitrite accumulation. The further increase of salinity and ALR exhibited little influence on the nitrification performance of MBR after the activated sludge had adapted to high salinity (>1%), effective nitrification performance was achieved at high ALR up to 1.71 kg NH4+-N/m3·d and high salinity (2.13%). The microbial analysis showed that the elevated salinity and accumulation of FNA reshaped the microbial community structure of ammonia-oxidizing bacteria (AOB) and NOB. The dominant species of AOB and NOB shifted from the salinity-resistant species Nitrosomonas aestuarii to the species Nitrosomonas mobilis with dual resistant to salinity and FNA, and from non-salinity-resistant species Candidatus Nitrospira defluvii to salinity-resistant species Nitrobacter winogradskyi and Nitrospira marina, respectively. Therefore, the salinity of 1% may be a critical level for the nitrification performance and the shift in the nitrifier community of activated sludge without salinity acclimation. © 2023 Elsevier Ltd

关键词： Bioreactors

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Corrigendum to "Na-mediated carbon nitride realizing CO2 photoreduction with selectivity modulation" [J. Colloid Interface Sci. 670 (2024) 348-356]

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Journal of colloid and interface science 2024年 681卷 305-306页

作者： Yi Han Wen Li Chuanzhou Bi Jinyuan Liu Hangmin Xu Hao Song Kang Zhong Jinman Yang Weiyi Jiang Jianjian Yi Bin Wang Paul K Chu Penghui Ding Hui Xu Xingwang Zhu College of Environmental Science and Engineering Institute of Technology for Carbon Neutralization Yangzhou University Yangzhou 225009 PR China. Department of Physics Department of Materials Science and Engineering and Department of Biomedical Engineering City University of Hong Kong Tat Chee Avenue Kowloon Hong Kong PR China. School of the Environment and Safety Engineering Jiangsu University Zhenjiang 212013 PR China. School of the Environment and Safety Engineering Jiangsu University Zhenjiang 212013 PR China. Electronic address: jmyang@***. Laboratory of Organic Electronics Department of Science and Technology Linkoping University Norrkoping SE-601 74 Sweden. Electronic address: penghui.ding@liu.se. College of Environmental Science and Engineering Institute of Technology for Carbon Neutralization Yangzhou University Yangzhou 225009 PR China. Electronic address: zxw@***.

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Long-Term Exposure of Triclocarban to the Performance of Partial Nitrification Process: Its Fate and Microbial Dynamics

SSRN

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SSRN 2024年

作者： Yan, Jingying Zhong, Dinglei Li, Junjie Miao, Hengfeng Yang, Kunlun Gu, Peng Ren, Xueli Xiong, Jianglei Zhang, Zengshuai School of Environmental and Ecology Jiangnan University Wuxi214122 China Jiangsu Key Laboratory of Anaerobic Biotechnology Jiangnan University Wuxi214122 China Jiangsu Engineering Laboratory of Biomass Energy and Carbon Reduction Technology Jiangnan University Wuxi214122 China Water Treatment Technology and Material Innovation Center Suzhou University of Science and Technology Suzhou215009 China China Electronics Innovation Environmental Technology Co. Ltd Wuxi214111 China

Triclocarban (TCC), as an antibacterial agent, is widely used in personal care products. Large amount of TCC utilization led to its frequent detection in sewage. The present study aimed to investigate the effect of TCC on the partial nitrification (PN) process and its interaction with nitrifiers via the nitrite accumulation, TCC degradation path, and microbial community response at long-term exposure. The results showed that the accumulation of NO2-N was observed after a long period of operation. Interestingly, the concentration of NO3-N was also decreased. Moreover, long-term exposure of TCC increased the activity of ammonia monooxygenase (AMO) and increased the secretion of extracellular polymeric substances (EPS) to resist the toxicity of TCC. Mass balance analysis showed that the biodegradation efficiency of TCC adsorbed in sludge increased from 4.30% to 70.57%. Meanwhile, abundance of AOB with long-term exposure of TCC increased, while abundance of NOB decreased. In addition, the abundance of TCC degrading bacteria (i.e., Sphingomonas) also increased. This indicated that TCC inhibited NOB and enriched TCC-degrading bacteria. This work contributed to a better understanding of the effects of TCC on wastewater treatment systems, which provided a basis for the comprehensive management of TCC in the future. © 2024, The Authors. All rights reserved.

关键词： Sewage

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Deeper Insight into the Storge Time of Food Waste on Black Soldier Fly Larvae Growth and Nutritive Value: Interactions of Substrate and Gut Microorganisms

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SSRN 2024年

作者： Sheng, Kuang Zhang, Zengshuai Ni, Jun Yang, Kunlun Gu, Peng Ren, Xueli Xiong, Jianglei Miao, Hengfeng School of Environmental and Ecology Jiangnan University Wuxi214122 China Jiangsu Key Laboratory of Anaerobic Biotechnology Jiangnan University Wuxi214122 China Jiangsu Engineering Laboratory of Biomass Energy and Carbon Reduction Technology Jiangnan University Wuxi214122 China Water Treatment Technology and Material Innovation Center Suzhou University of Science and Technology Suzhou215009 China China Electronics Innovation Environmental Technology Co. Ltd Wuxi214111 China

Biological treatment of black soldier fly (BSFL) has become an effective solution for food waste (FW) management, but the changes of physicochemical properties derived from storage time on BSFL growth have not been explored. The present study systematically investigated that different storage time of FW on the BSFL growth and its influential mechanism via determining the larvae weight, nutritive value and interactions of substrate and gut microorganisms. Results showed that the highest larvae weight of 282 mg and the shortest growth time of 14 days was achieved at the group of FW stored for 15 days, but lower storage time (i.e., 2 ~ 7 days) had adverse effect on BSFL growth. Short storage time (2 ~ 4d) improved protein content of BSFL biomass and prolonged storage time led to the accumulation of fat content. Mechanistic investigation demonstrated the changes of substrate characteristics and indigenous microorganisms via FW storage time were the main reasons for BSFL growth difference. The lactic acid accumulation in FW storage for 7 days (i.e., 19.84 g/L) significantly limited the BSFL growth, leading to lowest larvae weight. Same bacterial communities (e.g., Klebsiella and Proteus) both in substrate and BSFL, which exhibited similar trend with the prolonged storage time. The transfer of Clostridioides from substrate to BSFL gut promoted intestinal health and immune function with the FW stored for 15 days. Pathogens (e.g., Acinetobacter) in BSFL gut feeding with FW storage time of 7 days led to the decreased digestive function, consistent with the lowest larvae weight. © 2024, The Authors. All rights reserved.

关键词： Bacteria

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Strong Suppression of Silver Nanoparticles on Antibiotic Resistome in Anammox Process

SSRN

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SSRN 2024年

作者： Sun, Hongwei Chang, Huanhuan Zhu, Yuliang Li, Xiaoli Yang, Xiaoyong Zhou, Xin Wu, Daishun Ding, Jing Liu, Yucan School of Environmental and Material Engineering Yantai University Shandong Yantai264005 China School of Environmental and Municipal Engineering Lanzhou Jiaotong University Lanzhou730070 China School of Civil Engineering Yantai University Shandong Yantai264005 China College of Environmental Science and Engineering Taiyuan University of Technology Taiyuan030024 China Fujian Provincial Key Laboratory of Coastal Basin Environment School of Marine and Biochemical Engineering Fujian Polytechnic Normal University Fujiang Fuqing350300 China

This study comprehensively deciphered the effect of silver nanoparticles (AgNPs) on anammox flocculent sludge, including nitrogen removal performance, microbial community structure, functional enzyme abundance, antibiotic resistance gene (ARGs) dissemination, and horizontal gene transfer (HGT) mechanisms. Acute experiments demonstrated that the half inhibitory concentration (IC50) of AgNPs on anammox was 1.41 mg/L, and 3.5 mg/L AgNPs almost completely inhibited anammox. Additionally, after long-term exposure to 0-2.5 mg/L AgNPs for 200 cycles, anammox performance significantly decreased (P © 2024, The Authors. All rights reserved.

关键词： Silver nanoparticles

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Use of carbon-14 labeled trichloroethene to assess degradation potential in rock core microcosms

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science of the Total Environment 2024年 957卷 177540页

作者： Wang, Hao Yu, Rong Iery, Ramona Darlington Freedman, David L. Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing China SynTerra Corp. GreenvilleSC United States Naval Facilities Engineering and Expeditionary Warfare Center Port HuenemeCA United States Department of Environmental Engineering and Earth Sciences Clemson University ClemsonSC29634 United States

In fractured rock aquifers contaminated with trichloroethene (TCE), the extent of groundwater plumes is impacted by degradation occurring within the rock matrix. The objective of this study was to evaluate TCE degradation in rock samples from three sites where in situ conditions may favor natural or enhanced attenuation. Intact rock core microcosms (94 total) were used to assess in situ conditions and enhancement by addition of lactate or lactate + sulfate. A key advance for this study was inclusion of carbon-14 (14C) labeled TCE in the experimental design, which enables monitoring of 14C-labeled products in addition to more readily detectable compounds associated with TCE degradation (i.e., cis-1,2-dichloroethene (cDCE), vinyl chloride, acetylene, ethene, and ethane). 14C-labeled products comprised 35–95 % of the total degradation products recovered over 9–21 months of monitoring, indicating that inclusion of 14C-TCE was essential to capturing the full potential for abiotic and biotic degradation of TCE. Microcosms infused with TCE but not 14C-TCE exhibited enrichment in δ13C-TCE, and enrichment in δ13C-cDCE in microcosms that underwent reductive dechlorination of TCE to cDCE. The results demonstrate the advantages of using diffusion-transport microcosms and 14C-TCE to document degradation of chlorinated ethenes in fractured rock aquifers. © 2024 Elsevier B.V.

关键词： Dechlorination

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An Ultra-Sensitive Bimetallic Based Electrochemical Sensor for Speciation Analysis of Iron in Coastal Water

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SSRN 2024年

作者： Pan, Fei Li, Mengjie Hu, Xueping Han, Haitao Department of Criminal Science and Technology Shandong Police College Jinan250014 China School of Chemistry and Chemical Engineering Linyi University Linyi276005 China CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation Shandong Key Laboratory of Coastal Environmental Processes Research Center for Coastal Environment Engineering Technology of Shandong Province Yantai Institute of Coastal Zone Research Chinese Academy of Sciences Yantai264003 China

Different speciation of iron plays a crucial role in the biogeochemical cycle, so the determination of different speciation of iron is essential. Electrochemical method is one of the most promising and easiest methods for rapid on-site determination of different speciation of iron. Here,a new electrode (Au-Bi/ITO) based on commercial indium tin oxide electrode (ITO) was etched and functionalized with bismuth nanoparticles (BiNPs) and gold nanoparticles (AuNPs) nanocomposites for voltammetry speciation analysis of iron (Fe) in coastal water. The indium tin oxide electrode after etching can provide better attachment sites for the nanomaterials to improve the stability of the electrode, and the introduction of nanocomposites improves the sensitivity of the electrode, which makes it easier to realize the purpose of on-site detection compared with other modified electrodes. Under the synergistic effect of the two nanomaterials,the so-designed Au-Bi/ITO electrode showed excellent performance for the determination of different speciation of iron in coastal water. Under the optimal conditions, the Au-Bi/ITO electrode was linear in the concentration range from 5 nM to 1.5 μM with an ultralow detection limit of 1.4 nM. The results are consistent with certified values when used for the determination of certified reference materials. In summary, the Au-Bi/ITO electrode, with high stability and sensitivity, has been successfully used for the direct determination of different speciation of Fe (III) in coastal water via cathodic stripping voltammetry with satisfactory results. The electrode is simple to prepare, easy to use, low preparation cost, and has a very high potential for rapid detection of different speciation of iron in the field in the future. © 2024, The Authors. All rights reserved.

关键词： Gold nanoparticles

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Fast Pyrolysis of Biomass with Diverse Properties to Produce Liquid Hydrogen Storage Molecules

SSRN

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SSRN 2024年

作者： Xie, Wensheng Zhang, Yutao Zhang, Yeshui Liu, Chuanqun Wang, Yinxiang Xie, Yuanbo Ji, Guozhao Li, Aimin Key Laboratory of Industrial Ecology and Environmental Engineering School of Environmental Science and Technology Dalian University of Technology Dalian116000 China Zhejiang Province Key Laboratory of Soil Contamination Bioremediation School of Environment and Resources Zhejiang Agriculture and Forestry University Hangzhou311300 China School of Engineering University of Aberdeen AberdeenAB24 3UE United Kingdom Co. Ltd. Dalian116033 China

Liquid organic hydrogen carriers (LOHCs), such as methanol and formic acid, offer a reliable solution for the challenges associated with transporting and storing gaseous hydrogen. However, the current industrial LOHCs are costly and in limited supply due to complex synthesis methods involving gasification and Fischer-Tropsch synthesis. An alternative approach utilizing efficient pyrolysis methods can convert biomass into substances that mimic LOHCs, making them a promising avenue for hydrogen storage. Compounds with a high hydrogen content, including glycolaldehyde, acetic acid, and acetol, hold potential as effective LOHCs. This study seeks to assess how the specific properties of biomass impact the resulting products and target molecules, focusing on identifying the primary sources of LOHCs compounds. The experimental results indicate that glycolaldehyde primarily originates from cellulose, while acetic acid and acetol are mainly derived from hemicellulose. At a pyrolysis temperature of 500 ºC and a particle size of 0.38-0.83mm, corn cob yields a higher quantity of glycolaldehyde, acetic acid, and acetol (107 mg/g) compared to rice husks (85.6 mg/g) and pine (68.9 mg/g) due to its significant cellulose and hemicellulose content. It is notable that the primary sources of these hydrogen storage molecules during pyrolysis are the initial biomass pyrolysis products rather than from secondary reactions. © 2024, The Authors. All rights reserved.

关键词： Biomass

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Machine learning for pore-water pressure time-series prediction:Application of recurrent neural networks

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Geoscience Frontiers 2021年第1期12卷 453-467页

作者： Xin Wei Lulu Zhang Hao-Qing Yang Limin Zhang Yang-Ping Yao State Key Laboratory of Ocean Engineering Department of Civil EngineeringShanghai Jiao Tong University800 Dongchuan RoadShanghai 200240China Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration(CISSE) Shanghai 200240China Shanghai Key Laboratory for Digital Maintenance of Buildings and Infrastructure Shanghai 200240China Department of Civil and Environmental Engineering The Hong Kong University of Science and TechnologyHong KongChina Department of Civil Engineering School of Transportation Science and EngineeringBeihang University37 Xueyuan RoadHaidian DistrictBeijing 100191China

Knowledge of pore-water pressure(PWP)variation is fundamental for slope stability.A precise prediction of PWP is difficult due to complex physical mechanisms and in situ natural *** explore the applicability and advantages of recurrent neural networks(RNNs)on PWP prediction,three variants of RNNs,i.e.,standard RNN,long short-term memory(LSTM)and gated recurrent unit(GRU)are adopted and compared with a traditional static artificial neural network(ANN),i.e.,multi-layer perceptron(MLP).Measurements of rainfall and PWP of representative piezometers from a fully instrumented natural slope in Hong Kong are used to establish the prediction *** coefficient of determination(R^2)and root mean square error(RMSE)are used for model *** influence of input time series length on the model performance is *** results reveal that MLP can provide acceptable performance but is not *** uncertainty bounds of RMSE of the MLP model range from 0.24 kPa to 1.12 k Pa for the selected two *** standard RNN can perform better but the robustness is slightly affected when there are significant time lags between PWP changes and *** GRU and LSTM models can provide more precise and robust predictions than the standard *** effects of the hidden layer structure and the dropout technique are *** single-layer GRU is accurate enough for PWP prediction,whereas a double-layer GRU brings extra time cost with little accuracy *** dropout technique is essential to overfitting prevention and improvement of accuracy.

关键词： Pore-water pressure Slope Multi-layer perceptron Recurrent neural networks Long short-term memory Gated recurrent unit

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