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学者姓名：钟思宁
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Biological nitrogen fixation (BNF) as the primarily nitrogen supply for rice growth has lately been linked to Fe(III) reduction in paddy field. Rice root iron plaque (IP) is crucial in rhizosphere elements cycling and retaining pollutants, but the synergistic interaction between rhizospheric Fe cycle and BNF remains elusive. Herein, rice seedlings with and without IP on rice root were cultured under hydroponic conditions to explore the extent and the underlying mechanism of IP influencing BNF using acetylene reduction assay and N-15 labeling DNA-based stable isotope probing (DNA-SIP) combined with metagenomics. IP on rice root surface exhibited a diurnal Fe(III)/Fe(II) redox rhythm. In the presence of IP, the nifH gene abundance and nitrogenase activity were significantly increased by 1.15 x 10(8)similar to 1.15 x 10(11) copies/g.dw and 134 similar to 566 mu mol C2H4/(L.h), which enhanced the N-15 abundance in rice shoot and root by 36.4% and 23.1% and further facilitated 2.13 and 1.87 times more biomass accumulation than that without IP. The BNF activity was significantly inhibited by dissociating IP or breaking diurnal Fe redox rhythm. DNA-SIP revealed the enrichment of diazotrophic Azotobacter, Burkholderia, Phytobacter and Dechlormonas by IP and metagenomic binning identified the presence of genes related to BNF and extracellular electron transfer in such diazotrophs, suggesting their genetic potential to mediate synergetic BNF and Fe(III) reduction.
Keyword ：
Biological nitrogen fixation Biological nitrogen fixation DNA-SIP DNA-SIP Fe redox cycle Fe redox cycle Metagenomic binning Metagenomic binning Rice rhizosphere Rice rhizosphere
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| GB/T 7714 | Jia, Rong , Yu, Linpeng , Wang, Mengyi et al. Unveiling the crucial role of rice root iron plaque in enhancing biological nitrogen fixation via 15N-labeling DNA-SIP and metagenomics in a model study [J]. | BIOLOGY AND FERTILITY OF SOILS , 2025 , 61 (7) : 1183-1196 . |
| MLA | Jia, Rong et al. "Unveiling the crucial role of rice root iron plaque in enhancing biological nitrogen fixation via 15N-labeling DNA-SIP and metagenomics in a model study" . | BIOLOGY AND FERTILITY OF SOILS 61 . 7 (2025) : 1183-1196 . |
| APA | Jia, Rong , Yu, Linpeng , Wang, Mengyi , Wu, Yulu , Liu, Shiqi , Zhong, Sining et al. Unveiling the crucial role of rice root iron plaque in enhancing biological nitrogen fixation via 15N-labeling DNA-SIP and metagenomics in a model study . | BIOLOGY AND FERTILITY OF SOILS , 2025 , 61 (7) , 1183-1196 . |
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Groundwater ecosystems face increasing threat from declining water quality due to intensified urbanization, agricultural, and industrial activities. Accurately identifying anthropogenic disturbances remains challenging, and their effects on microbial nitrogen cycling are still largely unknown. Here, by collecting 64 groundwater samples from an aquifer beneath the Tanghe sewage reservoir in the North China Plain, we conducted a fullspectrum screening of 228 physiochemical indices, 47 nitrogen cycling genes (NCGs) and 2182 metagenomeassembled genomes (MAGs) harboring NCGs. Unmix model identified antibiotic usage, industrial manufacturing, and agricultural practices as the predominant pollution sources, explaining 49.6-92.2 % (averaged 81.0 %) of the variations in aquifer attributes. These activities were primary drivers governing distributions of groundwater NCGs and NCG-hosts, with fragmented denitrification processes being prevalent. Antibiotic usage and industrial activities were probably associated with suppressed nitrogen cycling, while agriculture had a positive effect. Notably, we observed enhanced mutualistic interactions within NCG-hosts and increased enrichment of NCG-antibiotic resistance gene (ARG), NCG-mental resistance gene (MRG), and NCGARG-MRG co-hosts under high anthropogenic stresses, suggesting microbial adaptation to optimize nutrient and energy metabolism. This study provided new insight into how groundwater nitrogen cycling responds to anthropogenic disturbances, offering valuable information for developing groundwater management and pollution control strategies.
Keyword ：
Anthropogenic disturbances Anthropogenic disturbances Denitrification Denitrification Full-spectrum screening Full-spectrum screening Groundwater Groundwater Microbial cooperation Microbial cooperation Pollution source identification Pollution source identification
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| GB/T 7714 | Zhong, Sining , Li, Bin , Chen, Qian et al. Identifying groundwater anthropogenic disturbances and their predominant impact on microbial nitrogen cycling at a former contamination site adjacent to Baiyangdian Lake [J]. | WATER RESEARCH , 2025 , 280 . |
| MLA | Zhong, Sining et al. "Identifying groundwater anthropogenic disturbances and their predominant impact on microbial nitrogen cycling at a former contamination site adjacent to Baiyangdian Lake" . | WATER RESEARCH 280 (2025) . |
| APA | Zhong, Sining , Li, Bin , Chen, Qian , Zhang, Jinzheng , Cai, Hetong , An, Rui et al. Identifying groundwater anthropogenic disturbances and their predominant impact on microbial nitrogen cycling at a former contamination site adjacent to Baiyangdian Lake . | WATER RESEARCH , 2025 , 280 . |
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Biological nitrogen fixation (BNF) by methanotrophic bacteria has been shown to play an important role in maintaining fertility. However, this process is still limited to aerobic methane oxidation with sufficient oxygen. It has remained unknown whether and how methanotrophic BNF proceeds in hypoxic environments. Herein, we incubated paddy soils with a ferrihydrite-containing mineral salt medium to enrich methanotrophic bacteria in the presence of methane (20%, v/v) under oxygen constraints (0.27%, v/v). The resulting microcosms showed that ferrihydrite-dependent aerobic methane oxidation significantly contributed (81%) to total BNF, increasing the 15N fixation rate by 13-fold from 0.02 to 0.28 mu mol 15N2 (g dry weight soil) -1 d-1. BNF was reduced by 97% when ferrihydrite was omitted, demonstrating the involvement of ferrihydrite in methanotrophic BNF. DNA stable-isotope probing indicated that Methylocystis, Methylophilaceae, and Methylomicrobium were the dominant methanotrophs/methylotrophs that assimilated labeled isotopes (13C or 15N) into biomass. Metagenomic binning combined with electrochemical analysis suggested that Methylocystis and Methylophilaceae had the potential to perform methane-induced BNF and likely utilized riboflavin and c-type cytochromes as electron carriers for ferrihydrite reduction. It was concluded that ferrihydrite mediated methanotrophic BNF by methanotrophs/methylotrophs solely or in conjunction with iron-reducing bacteria. Overall, this study revealed a previously overlooked yet pronounced coupling of iron-dependent aerobic methane oxidation to BNF and improves our understanding of methanotrophic BNF in hypoxic zones. Graphical Abstract
Keyword ：
biological nitrogen fixation biological nitrogen fixation iron reduction iron reduction metagenomics metagenomics methane oxidation methane oxidation methane-oxidizing bacteria methane-oxidizing bacteria
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| GB/T 7714 | Yu, Linpeng , Jia, Rong , Liu, Shiqi et al. Ferrihydrite-mediated methanotrophic nitrogen fixation in paddy soil under hypoxia [J]. | ISME COMMUNICATIONS , 2024 , 4 (1) . |
| MLA | Yu, Linpeng et al. "Ferrihydrite-mediated methanotrophic nitrogen fixation in paddy soil under hypoxia" . | ISME COMMUNICATIONS 4 . 1 (2024) . |
| APA | Yu, Linpeng , Jia, Rong , Liu, Shiqi , Li, Shuan , Zhong, Sining , Liu, Guohong et al. Ferrihydrite-mediated methanotrophic nitrogen fixation in paddy soil under hypoxia . | ISME COMMUNICATIONS , 2024 , 4 (1) . |
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Vanadium(V) contaminated soil is abundant in iron(Fe) oxides due to co-occurrence of V and Fe bearing minerals. However, biogeochemical transformation of redox-active V and Fe in soil, and the bacteria involved, has remained less investigated. This study explored the extent to which microbial mediated organic decomposition coupled to Fe(III) reduction contributed to V(V) release/reduction in V-contaminated paddy soil under different organic amendments. Soil flooding decreased toxic reducible V while increased less toxic oxidizable V. Glucose and straw promoted V(V) release with temporarily increasing V(V) concentration by 73.59-106.34 mg/kg compared to the control treatment and subsequently promoted V(V) reduction with decreasing V(V) to concentrations eventually similar to the control treatment. Biochar incorporation under glucose and straw amendments moderately alleviated V(V) release. The significantly positive correlation between Fe(II) and V(V) concentrations during the V solubilization process indicated a temporal coupling of Fe(III) reduction and V(V) release. Clostridium and Massilia mediated Fe(III) reductive dissolution and V(V) release, while Anaeromyxobacter, Sphingomonas, Bryobacter, Acidobacteriaceae and Anaerolineaceae contributed to V(V) reduction. This study provides a deeper understanding of V biotransformation coupled to Fe and C cycling and suggests a remediation strategy for V-contaminated soils via regulating Fe(III) reduction to weaken V(V) release or to promote V(V) reduction.
Keyword ：
Flooded paddy soil Flooded paddy soil Iron(III) reduction Iron(III) reduction Organic carbon decomposition Organic carbon decomposition Vanadium biotransformation Vanadium biotransformation Vanadium tolerant and reducing bacteria Vanadium tolerant and reducing bacteria
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| GB/T 7714 | Jia, Rong , Huang, Xiaoxuan , Dang, Panpan et al. Fe(III) reduction mediates vanadium release and reduction in vanadium contaminated paddy soil under different organic amendments [J]. | ENVIRONMENT INTERNATIONAL , 2024 , 193 . |
| MLA | Jia, Rong et al. "Fe(III) reduction mediates vanadium release and reduction in vanadium contaminated paddy soil under different organic amendments" . | ENVIRONMENT INTERNATIONAL 193 (2024) . |
| APA | Jia, Rong , Huang, Xiaoxuan , Dang, Panpan , Chen, Qiaolin , Zhong, Sining , Fan, Fangmei et al. Fe(III) reduction mediates vanadium release and reduction in vanadium contaminated paddy soil under different organic amendments . | ENVIRONMENT INTERNATIONAL , 2024 , 193 . |
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The ongoing permafrost degradation under climate warming has modified aboveground biogeochemical processes mediated by microbes, yet groundwater microbial structure and function as well as their response to permafrost deg-radation remain poorly understood. We separately collect 20 and 22 sub-permafrost groundwater samples from Qilian Mountain (alpine and seasonal permafrost) and Southern Tibet Valley (plateau isolated permafrost) on the Qinghai-Tibet Plateau (QTP) to investigate the effects of permafrost groundwater characteristics on the diversity, struc-ture, stability, and potential function of bacterial and fungal communities. Regional discrepancy of groundwater mi-crobes between two permafrost regions reveals that permafrost degradation might reshape microbial community structure, increase community stability and potential functions relevant to carbon metabolism. Bacterial community assembly in permafrost groundwater is governed by deterministic processes, whereas fungal communities are mainly controlled by stochastic processes, suggesting that bacterial biomarkers might provide the better 'early warning sig-nals' to permafrost degradation in deeper layers. Our study highlights the importance of groundwater microbes in eco-logical stability and carbon emission on the QTP.
Keyword ：
Groundwater Groundwater Microbial community Microbial community Permafrost degradation Permafrost degradation Qinghai-Tibet Plateau Qinghai-Tibet Plateau
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| GB/T 7714 | Zhong, Sining , Li, Bin , Hou, Bowen et al. Structure, stability, and potential function of groundwater microbial community responses to permafrost degradation on varying permafrost of the Qinghai-Tibet Plateau [J]. | SCIENCE OF THE TOTAL ENVIRONMENT , 2023 , 875 . |
| MLA | Zhong, Sining et al. "Structure, stability, and potential function of groundwater microbial community responses to permafrost degradation on varying permafrost of the Qinghai-Tibet Plateau" . | SCIENCE OF THE TOTAL ENVIRONMENT 875 (2023) . |
| APA | Zhong, Sining , Li, Bin , Hou, Bowen , Xu, Xuming , Hu, Jinyun , Jia, Rong et al. Structure, stability, and potential function of groundwater microbial community responses to permafrost degradation on varying permafrost of the Qinghai-Tibet Plateau . | SCIENCE OF THE TOTAL ENVIRONMENT , 2023 , 875 . |
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Oxidative decomposition of polystyrene (PS) by insects has been previously demonstrated, yet little is known about the oxidation mechanism and its effect on the metabolism of plastics within the insect gut. Here, we demonstrate the generation of reactive oxygen species (ROS) in the gut of superworms (Zophobas atratus larvae) under different feeding trails, which in turn induced the oxidative decomposition of ingested PS. The ROS were commonly generated in the larva gut, and PS consumption resulted in a significant increase of ROS with a maximum center dot OH of 51.2 mu mol/kg, which was five times higher than in the bran feeding group. Importantly, scavenging of ROS significantly decreased the oxidative depolymerization of PS, indicating a vital role of ROS in effective PS degradation in the gut of superworms. Further investigation suggested that the oxidative depolymerization of PS was caused by the combinatorial effect of ROS and extracellular oxidases of gut microbes. These results demonstrate that ROS were extensively produced within the intestinal microenvironment of insect larvae, which greatly favored the digestion of ingested bio-refractory polymers. This work provides new insights into the underlying biochemical mechanisms of plastic degradation in the gut.
Keyword ：
gut microbes gut microbes oxidative degradation oxidative degradation polystyrene polystyrene reactive oxygen species reactive oxygen species Zophobas atratus Zophobas atratus
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| GB/T 7714 | Chen, Zhi , Zhang, Yilan , Xing, Ruizhi et al. Reactive Oxygen Species Triggered Oxidative Degradation of Polystyrene in the Gut of Superworms (Zophobas atratus Larvae) [J]. | ENVIRONMENTAL SCIENCE & TECHNOLOGY , 2023 , 57 (20) : 7867-7874 . |
| MLA | Chen, Zhi et al. "Reactive Oxygen Species Triggered Oxidative Degradation of Polystyrene in the Gut of Superworms (Zophobas atratus Larvae)" . | ENVIRONMENTAL SCIENCE & TECHNOLOGY 57 . 20 (2023) : 7867-7874 . |
| APA | Chen, Zhi , Zhang, Yilan , Xing, Ruizhi , Rensing, Christopher , Lu, Jian , Chen, Mingli et al. Reactive Oxygen Species Triggered Oxidative Degradation of Polystyrene in the Gut of Superworms (Zophobas atratus Larvae) . | ENVIRONMENTAL SCIENCE & TECHNOLOGY , 2023 , 57 (20) , 7867-7874 . |
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Groundwater contamination in China has been greatly concerned due to dramatically increasing fresh water demand accompanied by economic development. However, little is known about aquifer vulnerability to hazardous matters especially in previously contaminated site of rapidly urbanizing cities. Here, we collected 90 groundwater samples from Xiong'an New Area during wet and dry seasons of 2019 and characterized the composition and distribution of emerging organic contaminants (EOCs) in this strategically developing city. A total of 89 EOCs, assigned to organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), and volatile organic compounds (VOCs), were detected with the frequencies ranging from 1.11 %-85.6 %. Methyl tert-butyl ether (16.3 & mu;g/L), Epoxid A (6.15 & mu;g/L), and & alpha;-Lindane (5.15 & mu;g/L) could be identified as major contributors to groundwater organic pollution. Significant aggregation of groundwater EOCs along Tang River were found due to historical residue and accumulation from wastewater storage there before 2017. Significant seasonal variations (p < 0.05) in the types and concentrations of EOCs could be attributed to discrepant pollution sources between varying seasons. Human health effects from exposure to groundwater EOCs were further evaluated with negligible risk (<10-4) in most samples (97.8 %) and notable risk (10-6-10-4) in several monitored wells (2.20 %) located along Tanghe Sewage Reservoir. This study provides new evidences for aquifer vulnerability to hazardous matters in historically contaminated sites and is of significant to groundwater pollution controlling and drinking water safety for rapidly urbanizing cities.
Keyword ：
Groundwater Groundwater Health risk Health risk Organochlorine pesticides Organochlorine pesticides Polychlorinated biphenyls Polychlorinated biphenyls Sourceidentification Sourceidentification Volatile organic compounds Volatile organic compounds
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| GB/T 7714 | An, Rui , Li, Bin , Zhong, Sining et al. Distribution, source identification, and health risk of emerging organic contaminants in groundwater of Xiong'an New Area, Northern China [J]. | SCIENCE OF THE TOTAL ENVIRONMENT , 2023 , 893 . |
| MLA | An, Rui et al. "Distribution, source identification, and health risk of emerging organic contaminants in groundwater of Xiong'an New Area, Northern China" . | SCIENCE OF THE TOTAL ENVIRONMENT 893 (2023) . |
| APA | An, Rui , Li, Bin , Zhong, Sining , Peng, Guyu , Li, Jie , Ma, Ruoqi et al. Distribution, source identification, and health risk of emerging organic contaminants in groundwater of Xiong'an New Area, Northern China . | SCIENCE OF THE TOTAL ENVIRONMENT , 2023 , 893 . |
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Polycyclic aromatic hydrocarbons (PAHs) in urban environments have been globally concerned due to their significant health impacts on residents. However, little is known about potential risks of PAHs from centralized water source areas. In the present study, 326 soils samples from the main water source areas of Beijing were collected and the occurrence, source appointment, and risks of PAHs were systematically investigated based on the monitoring results from high-performance liquid chromatography (HPLC). The total PAHs ( n-ary sumation (16) PAHs) concentrations ranged from 5.70 to 1512 ng/g with median value of 44.2 ng/g, in which 4-ring and 5-ring groups were the major components. PAHs concentrations in the cultivated land were significantly higher than other areas, which could reflect significant impact of soil organic matter and total nitrogen contents on the spatial variations of PAHs. Further source identifications through positive matrix factorization model (PMF) revealed that biomass (22.5%), coal (21.4%), gasoline (17.6%) and diesel (16.4%) combustion were dominant sources of soil PAHs in the study area. Moreover, the risk assessment indicated that total ecological and health risk of PAHs were negligible, but individual PAH, including pyrene and benzo(b)fluoranthene, should be concerned due to their potential risks in several monitored stations located in the secondary protection area of four reservoirs. Our study provided new insights into environmental risks of soils in main water source areas from PAHs and could be helpful for organic micropollutant controlling and drinking water safety in rapidly urbanizing cities.
Keyword ：
Land use patterns Land use patterns Polycyclic aromatic hydrocarbons Polycyclic aromatic hydrocarbons Reservoirs Reservoirs Risk assessment Risk assessment Soils Soils Source identification Source identification
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| GB/T 7714 | Li, Bin , Zhao, Liang , Zhong, Sining et al. Occurrence, distribution and risk assessment of polycyclic aromatic hydrocarbons in soils around main water source areas of Beijing, China [J]. | ENVIRONMENTAL GEOCHEMISTRY AND HEALTH , 2023 , 45 (11) : 7569-7584 . |
| MLA | Li, Bin et al. "Occurrence, distribution and risk assessment of polycyclic aromatic hydrocarbons in soils around main water source areas of Beijing, China" . | ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 45 . 11 (2023) : 7569-7584 . |
| APA | Li, Bin , Zhao, Liang , Zhong, Sining , An, Rui , Ma, Ruoqi , Xu, Xuming et al. Occurrence, distribution and risk assessment of polycyclic aromatic hydrocarbons in soils around main water source areas of Beijing, China . | ENVIRONMENTAL GEOCHEMISTRY AND HEALTH , 2023 , 45 (11) , 7569-7584 . |
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increased our understanding of distribution patterns, co-occurrence networks and environmental drivers of microbial communities in metal pollution soils.
Keyword ：
Keystone species Keystone species Metal-microbe interaction Metal-microbe interaction Microbial community Microbial community Soil depth Soil depth Vertical distribution Vertical distribution
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| GB/T 7714 | Du, Lei , Zhong, Sining , Luo, Kongyan et al. Effect of metal pollution on the distribution and co-occurrence pattern of bacterial, archaeal and fungal communities throughout the soil profiles [J]. | CHEMOSPHERE , 2023 , 315 . |
| MLA | Du, Lei et al. "Effect of metal pollution on the distribution and co-occurrence pattern of bacterial, archaeal and fungal communities throughout the soil profiles" . | CHEMOSPHERE 315 (2023) . |
| APA | Du, Lei , Zhong, Sining , Luo, Kongyan , Yang, Shanqing , Xia, Jianxin , Chen, Qian . Effect of metal pollution on the distribution and co-occurrence pattern of bacterial, archaeal and fungal communities throughout the soil profiles . | CHEMOSPHERE , 2023 , 315 . |
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Background Microbes constitute almost the entire biological community in subsurface groundwater and play an important role in ecological evolution and global biogeochemical cycles. Ecological baseline as a fundamental reference with less human interference has been investigated in surface ecosystems such as soils, rivers, and ocean, but the existence of groundwater microbial ecological baseline (GMEB) is still an open question so far.Results Based on high-throughput sequencing information derived from national monitoring of 733 newly constructed wells, we find that bacterial communities in pristine groundwater exhibit a significant lateral diversity gradient and gradually approach the topsoil microbial latitudinal diversity gradient with decreasing burial depth of phreatic water. Among 74 phyla dominated by Proteobacteria in groundwater, Patescibacteria act as keystone taxa that harmonize microbes in shallower aquifers and accelerate decline in bacterial diversity with increasing well-depth. Decreasing habitat niche breadth with increasing well-depth suggests a general change in the relationship among key microbes from closer cooperation in shallow to stronger competition in deep groundwater. Unlike surface-water microbes, microbial communities in pristine groundwater are predominantly shaped by deterministic processes, potentially associated with nutrient sequestration under dark and anoxic environments in aquifers.Conclusions By unveiling the biogeographic patterns and mechanisms controlling the community assembly of microbes in pristine groundwater throughout China, we firstly confirm the existence of GMEB in shallower aquifers and propose Groundwater Microbial Community Index (GMCI) to evaluate anthropogenic impact, which highlights the importance of GMEB in groundwater water security and health diagnosis.
Keyword ：
Bacterial community Bacterial community Deterministic processes Deterministic processes GMEB GMEB Groundwater Groundwater Keystone taxa Keystone taxa
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| GB/T 7714 | Zhong, Sining , Zhou, Shungui , Liu, Shufeng et al. May microbial ecological baseline exist in continental groundwater? [J]. | MICROBIOME , 2023 , 11 (1) . |
| MLA | Zhong, Sining et al. "May microbial ecological baseline exist in continental groundwater?" . | MICROBIOME 11 . 1 (2023) . |
| APA | Zhong, Sining , Zhou, Shungui , Liu, Shufeng , Wang, Jiawen , Dang, Chenyuan , Chen, Qian et al. May microbial ecological baseline exist in continental groundwater? . | MICROBIOME , 2023 , 11 (1) . |
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