通讯机构：
[Xiaomin Gong] C;College of Resources and Environment, Hunan Agricultural University, Changsha, China<&wdkj&>Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, Changsha, China
摘要：
Main conclusion This review proposed that phytoremediation could be applied for the decontamination of MPs/NPs.Micro- and nano-plastics (MPs < 5 mm; NPs < 100 nm) are emerging contaminants. Much of the recent concerns have focused on the investigation of their pollution and their potential eco-toxicity. Yet little review was available on the decontamination of MPs/NPs. Recently, the uptake of MPs/NPs by plants has been confirmed. Here, in view of the current knowledge, this review introduces MPs/NPs pollution and highlights the updated information about the interaction between MPs/NPs and plants. This review proposed that phytoremediation could be a potential possible way for the in situ remediation of MPs/NPs-contaminated environment. The possible mechanisms, influencing factors, and existing problems are summarized, and further research needs are proposed. This review herein provides new insights into the development of plant-based process for emerging pollutants decontamination, as well as the alleviation of MPs/NPs-induced toxicity to the ecosystem.
通讯机构：
[Qin, P.] C;College of Resources and Environment, China
关键词：
acid-modified;capacitive deionization;iron-loaded;phosphorus and fluoride wastewater;simultaneous treatment
摘要：
Here, capacitive deionization technology (CDI) using modified activated carbon fiber felt (ACF) electrodes was proposed to provide a new strategy for the challenge of simultaneous phosphorus and fluoride wastewater treatment. The acid-modified iron-loaded ACF (A@Fe-ACF) was obtained by modifying ACF through a two-step impregnation method. After the modification, the oxygen-containing functional groups on ACF increased and provided more adsorption sites. The electron transfer efficiency on the A@Fe-ACF was increased by introducing Fe and synergistically promoted the adsorption of phosphorus and fluorine. Results showed that the removal efficiencies of total phosphorus (TP) and total fluorine (TF) in wastewater reached 89.4% and 85% under optimal conditions (voltage intensity 1.5 V, pH 7, plate spacing 1 cm), while the adsorption mechanism of phosphorus and fluorine was dominated by chemical adsorption. Meanwhile, A@Fe-ACF electrode has good recyclability and stability after five cycles.
通讯机构：
[Manyun Zhang] K;Key Laboratory for Rural Ecosystem Health in Dongting Lake Area, College of Resources and Environment, Hunan Agricultural University, Changsha, Hunan 410128, PR China<&wdkj&>Centre for Planetary Health and Food Security, School of Environment and Science, Griffith University, Brisbane, Queensland 4111, Australia
作者：
Muhammad Jamal Nasir;Abdul Wahab;Tehreem Ayaz*;Sardar Khan;Amir Zeb Khan;...
期刊：
Arabian Journal of Geosciences,2023年16(2):1-14 ISSN：1866-7511
通讯作者：
Tehreem Ayaz
作者机构：
[Muhammad Jamal Nasir; Abdul Wahab] Department of Geography, University of Peshawar, Peshawar, Pakistan;[Tehreem Ayaz] School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai, People’s Republic of China;[Sardar Khan] Department of Environmental Sciences, University of Peshawar, Peshawar, Pakistan;[Amir Zeb Khan] PaK-Austria Fachhochschule: Institute of Applied Sciences and Technology, Haripur, Pakistan;[Ming Lei] College of Resources and Environment, Hunan Agricultural University, Changsha, People’s Republic of China
通讯机构：
[Tehreem Ayaz] S;School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai, People’s Republic of China
关键词：
Heavy metals;River sediments;Water quality;Contamination factor;Geo-accumulation index;Pollution load index
摘要：
Kalpani River, Pakistan is an important stream that collects more than two third of the untreated domestic, commercial, industrial, and sewerage water, agricultural overflow, and other unwanted effluents of the surrounding area. These effluents have degraded the overall quality of this river water. The current study aims to examine the concentration of selected heavy metal (HM) contamination in Kalpani River sediments. The HMs studied were Pb, Cd, Zn, Ni, Fe, and Cu. Sediment samples were taken from nine selected locations (labeled as P1, P2, P3, … P9) and tested for HM contamination. The HMs contamination level in the sediment was computed using the contamination factor (CF), pollution load index (PLI), and geo-accumulation index (Igeo). All three indicators revealed that the Kalpani River in Mardan city is polluted with hazardous HMs such as Cd, Pb, and Zn. Pb, Ni, Fe, and Cu CF levels in sediment samples ranged from low (< 1) to moderate (1–3). However, the CF values for Cd and Zn indicated being highly polluted (> 6). The PLI values along the Kalpani River varied considerably and were observed lower upstream (P1 and P2, i.e., 0.821), highest (1.229) at the middle course, and lower (0.897) downstream. The Igeo for the studied HMs ranged from moderately to strongly polluted. The primary anthropogenic sources responsible for HM pollution in the Kalpani River were improper waste dumping, untreated sewage urban and industrial wastewater into the river, and excessive pesticide usage.
摘要：
Nitrogen (N) is an essential plant growth nutrient whose coordinated distribution from source to sink organs is crucial for seed development and overall crop yield. We compared high and low N use efficiency (NUE) Brassica napus (rapeseed) genotypes. Metabonomics and transcriptomics revealed that leaf senescence induced by N deficiency promoted amino acid allocation from older to younger leaves in the high-NUE genotype at the vegetative growth stage. Efficient source to sink remobilization of amino acids elevated the numbers of branches and pods per plant under a N-deficiency treatment during the reproductive stage. A 15 N tracer experiment confirmed that more amino acids were partitioned into seeds from the silique wall during the pod stage in the high-NUE genotype, owing mainly to variation in genes involved in organic N transport and metabolism. We suggest that the greater amino acid source-to-sink allocation efficiency during various growth stages in the high-NUE genotype resulted in higher yield and NUE under N deficiency. These findings support the hypothesis that strong amino acid remobilization in rapeseed leads to high yield, NUE, and harvest index.
Nitrogen (N) is an essential plant growth nutrient whose coordinated distribution from source to sink organs is crucial for seed development and overall crop yield. We compared high and low N use efficiency (NUE) Brassica napus (rapeseed) genotypes. Metabonomics and transcriptomics revealed that leaf senescence induced by N deficiency promoted amino acid allocation from older to younger leaves in the high-NUE genotype at the vegetative growth stage. Efficient source to sink remobilization of amino acids elevated the numbers of branches and pods per plant under a N-deficiency treatment during the reproductive stage. A 15 N tracer experiment confirmed that more amino acids were partitioned into seeds from the silique wall during the pod stage in the high-NUE genotype, owing mainly to variation in genes involved in organic N transport and metabolism. We suggest that the greater amino acid source-to-sink allocation efficiency during various growth stages in the high-NUE genotype resulted in higher yield and NUE under N deficiency. These findings support the hypothesis that strong amino acid remobilization in rapeseed leads to high yield, NUE, and harvest index.
作者机构：
[Long, Jiumei; Liu, Zui; Zhang, Guocheng; Zhou, Dongsheng; Wang, Jing; Luo, Yuanlai; Huang, Binyan] Hengyang Normal Univ, Coll Life Sci, Hunan Key Lab Conservat & Utilizat Biol Resources, Hengyang 421008, Peoples R China.;[Lei, Ming] Hunan Agr Univ, Coll Resource & Environm, Hunan Engn Res Ctr Safe & High Efficient Utilizat, Changsha 410128, Peoples R China.
通讯机构：
[Ming Lei] H;Hunan Engineering Research Center for Safe & High-Efficient Utilization of Heavy Metal Pollution Farmland, College of Resource & Environment, Hunan Agricultural University, Changsha, 410128, PR China
摘要：
<jats:title>Abstract</jats:title><jats:p>To improve the hydrophilicity and long‐lasting bacterial inhibition of poly(vinylidene fluoride) (PVDF) ultrafiltration membranes, DA/Ag‐GO/PSF/PVDF hybrid ultrafiltration membranes were prepared with PVDF and polysulfone (PSF) as substrates, graphene oxide (GO) as additives, and dopamine (DA) and silver as surface modifications. The structure and performance of PSF/PVDF hybrid membranes were investigated by SEM, FTIR, contact angle, filtration flux, and bacterial inhibition tests. The results showed that with the addition of GO, the hydrophilicity of the PSF/PVDF hybrid membranes were enhanced, the water flux tended to be increased, the retention rate of bovine serum albumin were maintained above 94%, and the bacterial inhibition against Gram‐negative and positive bacteria were obvious. When GO was added at 0.2wt%, the contact angle of the hybrid membrane decreased from 87° to 69°, the water flux increased from 406.05 to 650.52 L m<jats:sup>−2</jats:sup>h<jats:sup>−1</jats:sup>, the flux recovery increased from 49.18% to 84.40%, and the resistance to organic contamination was significantly improved.</jats:p>
通讯机构：
[Yaocheng Deng; Ying Huang] C;[Chengyang Feng] K;KAUST Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia<&wdkj&>College of Resources & Environment, Hunan Agricultural University, Changsha 410128, China
通讯机构：
[Manyun Zhang] K;Key Laboratory for Rural Ecosystem Health in Dongting Lake Area, College of Resources and Environment, Hunan Agricultural University, Changsha, People’s Republic of China<&wdkj&>Jiangxi Provincial Key Laboratory of Silviculture, College of Forestry, Jiangxi Agricultural University, Nanchang, China
期刊：
Frontiers in Microbiology,2023年13:1084452 ISSN：1664-302X
通讯作者：
Hu, A.;Zhang, Y.
作者机构：
[Zhang, Yuping; Han, Lei; Xiao, Xiwen; Chen, Hongri; Hu, Ang] Hunan Agr Univ, Coll Resources & Environm, Changsha, Peoples R China.;[Wang, Jianjun] Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing, Peoples R China.
通讯机构：
[Zhang, Y.; Hu, A.] C;College of Resources and Environment, China
关键词：
bacterial and fungal diversity;ecosystem functions;effect size (effect magnitude);intercropping;soil properties
摘要：
<jats:sec><jats:title>Background and aims:</jats:title><jats:p>Intercropping, a widely used planting pattern, could affect soil physicochemical properties, microbial community diversity, and further crop yields. However, its impacts on soil microbial diversity and ecosystem functioning and further soil sustainability are poorly understood.</jats:p></jats:sec><jats:sec><jats:title>Methods:</jats:title><jats:p>We conducted field experiments by intercropping maize with four important crops (i.e., sesame, peanut, soybean, and sweet potato), and examined soil microbial community diversity and ecosystem functioning such as microbial biomass and enzyme activities under monocropping and intercropping. We quantified their intercropping effects on microbial diversity and ecosystem functions with effect size metric Cohen d by comparing to the monocropping of maize.</jats:p></jats:sec><jats:sec><jats:title>Results:</jats:title><jats:p>We found that the four intercropping systems significantly increased soil aggregates in respective of the 2–0.25 mm grain size. Intercropping consistently elevated ecosystem functioning, such as soil enzyme activities of urease, phosphatase, and catalase, soil microbial biomass carbon and soil microbial biomass nitrogen. The Cohen d of bacterial richness also increased from 0.39 to 2.36, the latter of which was significant for maize/peanut intercropping. Notably, these ecosystem functions were strongly associated with the diversity of bacteria and fungi and the relative abundance of their ecological clusters identified with network analysis.</jats:p></jats:sec><jats:sec><jats:title>Conclusion:</jats:title><jats:p>Together, our findings indicate that intercropping generally affected soil physicochemical properties, ecosystem functions, and promoted microbial community diversity. More importantly, our findings highlight the important roles of microbial diversity of ecological clusters (that is, network modules) in maintaining ecosystem functioning after intercropping. These results will help to better understand the microbial diversity and ecosystem function in intercropping systems and guide agricultural practice.</jats:p></jats:sec>
作者机构：
[丁司铎; 罗斯] College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China;Engineering Research Center for Water Pollution Purification of Irrigation Source in Hunan Province, Changsha, 410128, China;[刘玉玲; 姚俊帆; 伍德; 张朴心; 铁柏清] College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China<&wdkj&>Engineering Research Center for Water Pollution Purification of Irrigation Source in Hunan Province, Changsha, 410128, China
