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The photo-based treatment technology simultaneously removes resistant bacteria and resistant genes from wastewater

Journal of Environmental Sciences 2025年第2期148卷 243-262页

作者： Zicong Guo Xiang Tang Wenjun Wang Zhangxiong Luo Yuxi Zeng Nan Zhou Zhigang Yu Dongbo Wang Biao Song Chengyun Zhou Weiping Xiong College of Environmental Science and Engineering and key laboratory of Environmental biology and Pollution Control(Ministry of Education) Hunan UniversityChangsha 410082China Fujian Provincial key laboratory of Soil Environmental Health and Regulation College of Resources and EnvironmentFujian Agriculture and Forestry UniversityFuzhou 350002China School of resources and Environment Hunan University of Technology and BusinessChangsha 410205China Australian Centre for Water and Environmental biotechnology The University of QueenslandBrisbaneQLD 4072Australia

Because of the recent widespread usage of antibiotics,the acquisition and dissemination of antibiotic-resistance genes(ARGs)were prevalent in the majority of ***,the biological wastewater treatment processes used in wastewater treatment plants have a limited efficiencies of antibiotics resistant bacteria(ARB)disinfection and ARGs degradation and even promote the proliferation of ***,ARB and ARGs in effluent pose potential risks if they are not further *** oxidation is considered a promising disinfection technology,where the photocatalytic process generates many free radicals that enhance the interaction between light and deoxyribonucleic acid(DNA)for ARB elimination and subsequent degradation of *** reviewaims to illustrate the progress of photocatalytic oxidation technology for removing antibiotics resistant(AR)from wastewater in recent *** discuss the sources and transfer of ARGs in *** overall removal efficiencies of ultraviolet radiation(UV)/chlorination,UV/ozone,UV/H_(2)O_(2),and UV/sulfate-radical based system for ARB and ARGs,as well as the experimental parameters and removal mechanisms,are systematically *** contribution of photocatalytic materials based on TiO_(2) and g-C_(3)N_(4) to the inactivation of ARB and degradation of ARGs is highlighted,producingmany free radicals to attack ARB and ARGs while effectively limiting the horizontal gene transfer(HGT)in ***,based on the reviewed studies,future research directions are proposed to realize specific photocatalytic oxidation technology applications and overcome current challenges.

关键词： Antibiotics resistant genes Antibiotics resistant bacteria Photocatalytic oxidation

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Morphology and phylogeny of two species of Bathypathes from the tropical western Pacific,with description of a new species

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Journal of Oceanology and Limnology 2025年第1期43卷 248-260页

作者： Ting LÜ Zifeng ZHAN Kuidong XU laboratory of Marine Organism Taxonomy and Phylogeny Qingdao Key Laboratory of Marine Biodiversity and ConservationInstitute of OceanologyChinese Academy of SciencesQingdao 266071China laboratory for Marine biology and biotechnology Laoshan LaboratoryQingdao 266237China University of Chinese Academy of Sciences Beijing 100049China

The black coral genus Bathypathes Brook,1889 represents a relatively diverse and ecologically important assemblage comprising the deep-sea hard substrate *** phylogenetic investigations have revealed the polyphyletic nature of Bathypathes,urging further morphological analysis to understand its *** combing morphological and molecular data,we describe Bathypathes multifurcata *** report *** Molodtsova,Opresko&Wagner,2022based on the specimens collected from the tropical western *** phylogenetic topology reconstructed using nuclear ITS1-5.8S-ITS2 and three mitochondrial fragments suggests the separation of Bathypathes into four *** analysis of morphological characters,particularly the colony branch and pinnule patterns also roughly classify Bathypathes into four morphological groups A–*** A is characterized by the unbranched colony and the subopposite arrangement of *** contrast to Group A,Groups B–D have the alternately arranged *** these,Group C exhibits a distinctly long unpinnulated stem compared to Groups B and *** B has unbranched colony,relatively short unpinnulated stem,and spines on pinnules have blunt *** Group D,large colonies(higher than 40 cm)have one or a few branches,small colonies(less than 40 cm)are unbranched,and spines on pinnules have acute *** data particularly those species without sequences are necessary to verify the classification of these groups.

关键词： Antipatharia black coral taxonomy phylogeny seamount western Pacific

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Deciphering fungal metabolon coupling tandem inverse-electrondemand Diels-Alder reaction and semipinacol rearrangement for the biosynthesis of spiro polycyclic alkaloids

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Science china Chemistry 2025年第1期68卷 288-296页

作者： Shuai Liu Wen-Qiang Xu Ying-Tong Di Man-Cheng Tang Ding-Kang Chen Ming-Ming Cao Yao-Wen Chang Hong-Yu Tang Chun-Mao Yuan Jun-Bo Yang Zhi-Li Zuo Han Guo Zi-Fei Xu Ying Zeng Yun-Dong Wu Xiao-Jiang Hao key laboratory of Phytochemistry and Natural Medicines(Chinese Academy of Sciences) Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China Lab of Computational Chemistry and Drug Design State Key Laboratory of Chemical OncogenomicsPeking University Shenzhen Graduate SchoolShenzhen 518055China Shenzhen Bay laboratory Shenzhen 518055China University of Chinese Academy of Sciences Beijing 100049China State key laboratory of Microbial Metabolism School of Life Sciences&BiotechnologyShanghai Jiao Tong UniversityShanghai 200240China State key laboratory of Functions and Applications of Medicinal Plants Guizhou Medical UniversityGuiyang 550014China Molecular biology Experimental Center Germplasm Bank of Wild Species in Southwest ChinaKunming Institute of BotanyChinese Academy of SciencesKunming 650201China Yunnan key laboratory for Wild Plant resources Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China Research Unit of Chemical biology of Natural Anti-Virus Products Chinese Academy of Medical SciencesBeijing 100730China

In the intricate process of natural product biosynthesis,a metabolon can enhance metabolic flux by associating sequential enzymes.A fungal metabolon,comprising of flavin-dependent monooxygenase Spe F and P450 monooxygenase Spe G,is identified in the biosynthesis of spiro polycyclic alkaloids(+)-notoamide B and its diastereomer(+)-versicolamide *** notoamide E as a substance,Spe F/Spe G metabolon can control the stereoselectivity of its 2,3-epoxidation,followed by hydrogen atom ion at C-17 to generate reactive epoxide tau-m A with dienyl iminium ***,(+)-notoamide B and(+)-versicolamide B are produced via tandem nonenzymatic inverse-electron-demand Diels-Alder reaction and semipinacol *** provides the first example of metabolon in the biosynthesis of spiro-prenylated indole alkaloids.

关键词： metabolon Diels-Alder reaction semipinacol rearrangement biosynthesis notoamides spiro polycyclic alkaloids

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Mixture of Bacillus Amyloliquefaciens and Bacillus Pumilus Modulates Community Structures of Rice Rhizosphere Soil to Suppress Rice Seedling Blight

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Rice science 2025年第1期32卷 118-130,I0067-I0070页

作者： JIANG Nan QIU Jiehua TIAN Dagang SHI Huanbin LIU Zhiquan WEN Hui XIE Shuwei CHEN Huizhe WU Meng KOU Yanjun State key laboratory of Rice biology and Breeding China National Rice Research InstituteHangzhou 311400China biotechnology Research Institute Fujian Academy of Agricultural SciencesFuzhou 350003China State key laboratory of Soil and Sustainable Agriculture the Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China

Rice seedling blight,caused by various fungi,including Fusarium oxysporum,poses a severe threat to rice *** awareness grows regarding the environmental and safety hazards associated with the application of fungicides for managing rice seedling blight,there has been a shift in focus towards biological control *** this study,we isolated biocontrol bacteria from paddy fields that significantly inhibited the growth of *** in vitro and identified the strains as Bacillus amyloliquefaciens T40 and Bacillus pumilus ***,our findings indicated that the combined application of these Bacillus strains in soil was more effective in reducing the incidence of rice seedling blight than their individual *** of 16S and internal transcribed spacer rRNA gene sequencing data revealed that the mixture of the T40 and T208 strains exhibited the lowest average clustering coefficients,which were negatively correlated with the biomass of ***-inoculated rice ***,this mixture led to higher stochastic assembly(average|βNTI|resources for crop protection.

关键词： application strategy disease control disease resistance microbial community structure microbial community assembly process Oryza sativa

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Epigenetics in the modern era of crop improvements

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Science china Life Sciences 2025年

作者： Yan Xue Xiaofeng Cao Xiangsong Chen Xian Deng Xingwang Deng Yong Ding Aiwu Dong Chengguo Duan Xiaofeng Fang Lei Gong Zhizhong Gong Xiaofeng Gu Chongsheng He Hang He Shengbo He Xinjian He Yan He Yuehui He Guifang Jia Danhua Jiang Jianjun Jiang Jinsheng Lai Zhaobo Lang Chenlong Li Qing Li Xingwang Li Bao Liu Bing Liu Xiao Luo Yijun Qi Weiqiang Qian Guodong Ren Qingxin Song Xianwei Song Zhixi Tian Jiawei Wang Yuan Wang Liang Wu Zhe Wu Rui Xia Jun Xiao Lin Xu Zhengyi Xu Wenhao Yan Hongchun Yang Jixian Zhai Yijing Zhang Yusheng Zhao Xuehua Zhong Daoxiu Zhou Ming Zhou Yue Zhou Bo Zhu Jiankang Zhu Qikun Liu College of Life Sciences Institute of Life Science and Green Development Hebei University biotechnology Research Institute Chinese Academy of Agricultural Sciences College of biology Hunan Key Laboratory of Plant Functional Genomics and Developmental Regulation Hunan Engineering and Technology Research Center of Hybrid Rapeseed Hunan University Institute of Advanced Agricultural Sciences School of Advanced Agricultural Sciences Peking University State key laboratory for Conservation and Utilization of Subtropical Agro-Bioresources Guangdong Laboratory for Lingnan Modern Agriculture South China Agricultural University National Institute of Biological Sciences key laboratory of Seed Innovation Institute of Genetics and Developmental Biology Chinese Academy of Sciences School of Advanced Agricultural Sciences Peking-Tsinghua Center for Life Sciences Peking University Synthetic and Functional Biomolecules Center Beijing National Laboratory for Molecular Sciences Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education College of Chemistry and Molecular Engineering Peking University key laboratory of Seed Innovation State Key Laboratory of Plant Genomics and National Center for Plant Gene Research Institute of Genetics and Developmental Biology Chinese Academy of Sciences State key laboratory of Wheat Improvement Peking University Institute of Advanced Agricultural Sciences Shandong Laboratory of Advanced Agricultural Sciences in Weifang State key laboratory of Crop Stress Adaptation and Improvement School of Life Sciences Henan University State key laboratory of Maize Bio-breeding National Maize Improvement Center Department of Plant Genetics and Breeding China Agricultural University Frontiers Science Center for Molecular Design Breeding China Agricultural University Center for Crop Functional Genomics and Molecular Breeding China Agricultural University Sanya Institute of china Agricultural University Hainan Yazhou Bay Seed laboratory Institute of Advan

Epigenetic mechanisms are integral to plant growth, development, and adaptation to environmental stimuli. Over the past two decades,our comprehension of these complex regulatory processes has expanded remarkably, producing a substantial body of knowledge on both locus-specific mechanisms and genome-wide regulatory patterns. Studies initially grounded in the model plant Arabidopsis have been broadened to encompass a diverse array of crop species, revealing the multifaceted roles of epigenetics in physiological and agronomic traits. With recent technological advancements, epigenetic regulations at the single-cell level and at the large-scale population level are emerging as new focuses. This review offers an in-depth synthesis of the diverse epigenetic regulations, detailing the catalytic machinery and regulatory functions. It delves into the intricate interplay among various epigenetic elements and their collective influence on the modulation of crop traits. Furthermore, it examines recent breakthroughs in technologies for epigenetic modifications and their integration into strategies for crop improvement. The review underscores the transformative potential of epigenetic strategies in bolstering crop performance, advocating for the development of efficient tools to fully exploit the agricultural benefits of epigenetic insights.

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The effect of pmpR on the type Ⅲ secretion system in Pseudomonas aeruginosa

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Chinese Science Bulletin 2012年第19期57卷 2413-2418页

作者： LIANG HaiHua KONG WeiNa SHEN Tuo DUAN JiaLi DUAN KangMin key laboratory of resources biology and biotechnology in western china Ministry of EducationFaculty of Life SciencesNorthwest UniversityXi'anShaanxi 710069China

The type III secretion system(T3SS) plays important roles in Pseudomonas aeruginosa ***,we reported that the uncharacterized protein PmpR could regulate pqsR,an important regulator in the quorum-sensing system,by directly binding to its promoter *** the T3SS is controlled by the quorum-sensing system,here,we investigated the relationship between PmpR and the *** data showed that expression of the T3SS genes exoS,exoY,exoT,and exsD was dramatically increased in a pmpR-deletion mutant compared with that in the wild-type *** strain *** from DNA mobility assays indicated that PmpR affects the T3SS *** is unlikely that PmpR controls the T3SS via the Pseudomonas quinolone signal(PQS) because the PQS negatively regulates the T3SS,while pmpR negatively regulates the *** effect of PmpR on the T3SS seems to be independent of the PQS;further investigation is required to uncover the underlying regulatory pathways.

关键词：分泌系统绿脓杆菌类型缺失突变体传感系统感应系统假单胞菌数据表

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Effect of Denaturant Concentration on Hen-egg White Lysozyme Renaturation

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Chinese Journal of Chemistry 2006年第5期24卷 653-659页

作者：边六交杨晓燕 key laboratory of Ministry of Education for Resource biology and biotechnology in western china Northwest University Xi' an Shaanxi 710069 China

Based on three-state renaturation process of denatured proteins, an equation describing the effect of denaturant concentration on renaturation yield of denatured proteins was presented. By this equation, two parameters n（m1 -m2） and Ka can be obtained. The former indicates the difference in the number of denaturant molecules between the renaturation process of n number of refolding intermediates from refolding intermediate state to native state and their aggregate process from refolding intermediate state to aggregate state, the latter denotes the apparent aggregate equilibrium constant for protein molecules aggregated from native state to aggregate state, and from them, the characteristics of the renaturation process of denatured proteins in denaturant solution can be identified. This equation was tested by the renaturation processes of denatured egg white lysozyme in guanidine hydrochloride and urea solutions, with the results to show that when guanidine hydrochloride and urea concentrations were separately higher than 1.25 and 3.00 mol/L or separately lower than 1.00 and 3.00 mol/L, the refolding intermediates of egg white lysozymes were more easily aggregated to aggregate state or more easily renatured to native state, respectively. Under different initial total egg white lysozyme concentrations in urea solution, the refolding egg white lysozyme intermediates could be deduced to have a tendency to form a bimolecular intermediate aggregate, and this inference was further confirmed by their nonreducing SDS-PAGE and size exclusion chromatography.

关键词： egg white lysozyme urea guanidine hydrochloride renaturation yield denaturant concentration

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The immunophilin CYCLOPHILIN28 affects PSII-LHCII supercomplex assembly and accumulation in Arabidopsis thaliana

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Journal of Integrative Plant biology 2022年第4期64卷 915-929页

作者： Weining Zhu Linqing Xu Xiaoxia Yu Ying Zhong Chinese Education Ministry's key laboratory of western resources and Modern biotechnology Key Laboratory of Biotechnology Shaanxi ProvinceCollege of Life SciencesNorthwest UniversityXi'an 710069China

In plant chloroplasts,photosystem II(PSII)complexes,together with light-harvesting complex II(LHCII),form various PSII-LHCII supercomplexes(SCs).This process likely involves immunophilins,but the underlying regulatory mechanisms are ***,by comparing Arabidopsis thaliana mutants lacking the chloroplast lumen-localized immunophilin CYCLOPHILIN28(CYP28)to wildtype and transgenic complemented lines,we determined that CYP28 regulates the assembly and accumulation of PSII-LHCII *** to the wild type,cyp28 plants showed accelerated leaf growth,earlier flowering time,and enhanced accumulation of high molecular weight PSII-LHCII SCs under normal light *** lack of CYP28 also significantly affected the electron transport *** native-polyacrylamide gel electrophoresis analysis revealed more Lhcb6 and less Lhcb4 in M-LHCII-Lhcb4-Lhcb6 complexes in cyp28 versus wild-type ***-prolyl cis/trans isomerase(PPIase)activity assays revealed that CYP28 exhibits weak PPIase activity and that its K113 and E187 residues are critical for this *** analysis suggested that CYP28 may regulate PSIILHCII SC accumulation by altering the configuration of Lhcb6 via its PPIase ***,the Lhcb6-P139 residue is critical for PSII-LHCII SC assembly and ***,our findings suggest that CYP28 likely regulates PSII-LHCII SC assembly and accumulation by altering the configuration of P139 of Lhcb6 via its PPIase activity.

关键词： cyclophilin28 immunophilin peptidyl-prolyl cis/trans isomerase activity photosynthesis PSII-LHCII supercomplexes thylakoid lumen

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A Hydrogen Peroxide Sensor Based on Silver Nanoparticles Biosynthesized by Bacillus subtilis

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Chinese Journal of Chemistry 2013年第12期31卷 1519-1525页

作者： Ruixiao Liu Yahui Wei Jianbin Zheng Hongfang Zhang Qinglin Sheng Institute of Analytical Science/Shaanxi Provincial key laboratory of Electroanalytical Chemistry Northwest University Xi'an Shaanxi 710069 China key laboratory of resources biology and biotechnology in western china Ministry of Educational Northwest University Xi' an Shaanxi 710069 China

In this study, silver nanoparticles （AgNPs） were biosynthesized by Bacillus subtilis and used to construct a nonenzymatic hydrogen peroxide （H202） sensor, Scanning electron microscopy, transmission electron microscopy and energy dispersive spectroscopy confirmed that the AgNPs were prepared successfully with spherical morphol- ogy. The electrochemical properties of the resulted sensor were investigated by cyclic voltammetry, chronoam- perometry and electrochemical impedance spectroscopy. It was found that the sensor exhibited good electrocatalytic activity towards H202 reduction with a wider linear range from 0.05 to 120 mmol.L-1, a detection limit of 8 gmol.L-1 and a fast response time less than 2 s. The sensor exhibited good selectivity for H202 determination in the presence of glucose, acetaminophen, ascorbic acid and uric acid.

关键词： sensor biosynthesis Bacillus subtilis silver nanoparticles hydrogen peroxide

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A Sensitive Derivatization Method for the Determination of the Sugar Composition after Pre-column Reductive Amination with 3-Amino-9-ethylcarbazole （AEC） by High-Performance Liquid Chromatography

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Chinese Journal of Chemistry 2007年第10期25卷 1522-1528页

作者：张英黄琳娟王仲孚 key laboratory of Resource biology and biotechnology in western china Ministry of Education Xi'an Shaanxi 710069 China Shaanxi Provincial key laboratory of biotechnology Xi'an Shaanxi 710069 China Life Science College Northwest University Xi'an Shaanxi 710069 China

3-Amino-9-ethylcarbazole （AEC） was employed for monosaccharide derivatization. The derivatives can be analyzed by high-performance liquid chromatography （HPLC） with an ultraviolet detection （wavelength： 254 nm）. Monosaccharides were quantitatively derivatized with 3-amino-9-ethylcarbazole （AEC） at 70 ℃ for 60 min. The method was linear for all samples over the concentration range tested （r〉0.999）, the precision was found to be satisfactory （R.S.D. 〈 3%）, and the recovery ratios were 〉98.62%. The stability analysis showed R.S.D. was between 1.81%-3.16%. Detection limits for the samples （D-glucose, L-xylose, D-mannose, L-arabinose, and L-rhamnose） ranged from 0.06 to 1.97 ng/mL （S/N=3）. Under the optimized derivatization and HPLC conditions, five monosaccharides were well separated using a narrow bore C18 column （250 mm×4.6 mm） with 0.1 mol/L ammonium acetate containing 25% acetonitrile at a flow rate of 0.5 mL/min. As an application, the method has been successfully applied to the determination of monosaccharide compositions of three polysaccharides SPPA-1, SPPB-1 and SPPC- 1 of Spirulina platensis. This method also has potential application to oligosaccharide or glycan analyses.

关键词： 3-amino-9-ethylcarbazole HPLC monosaccharide derivatization MALDI-TOF

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