检索结果-南通市图书馆

Modulation of starch synthesis in Arabidopsis via phytochrome B-mediated light signal

Journal of Integrative Plant Biology 2024年第5期66卷 973-985页

作者： qingbiao Shi Ying Xia Na Xue Qibin Wang Qing Tao Mingjing li Di Xu Xiaofei Wang Fanying Kong Haisen Zhang Gang li National Key Laboratory of Wheat Improvement College of Life SciencesShandong Agricultural UniversityTai'an 271018China National Key Laboratory of Wheat Improvement College of AgronomyShandong Agricultural UniversityTai'an 271018China

Starch is a major storage carbohydrate in plants and is critical in crop yield and quality.Starch synthesis is intricately regulated by internal metabolic processes and external environmental cues;however,the precise molecular mechanisms governing this process remain largely unknown.In this study,we revealed that high red to far-red(high R:FR)light significantly induces the synthesis of leaf starch and the expression of synthesis-related genes,whereas low R:FR light suppress these processes.Arabidopsis phytochrome B(phyB),the primary R and FR photoreceptor,was identified as a critical positive regulator in this process.Downstream of phyB,basic leucine zipper transcription factor ELONGATED HYPOCOTYL5(HY5)was found to enhance starch synthesis,whereas the basic helix-loop-helix transcription factors PHYTOCHROME INTERACTING FACTORs(PIF3,PIF4,and PIF5)inhibit starch synthesis in Arabidopsis leaves.Notably,HY5 and PIFs directly compete for binding to a shared G-box cis-element in the promoter region of genes encoding starch synthases GBSS,SS3,and SS4,which leads to antagonistic regulation of their expression and,consequently,starch synthesis.Our findings highlight the vital role of phyB in enhancing starch synthesis by stabilizing HY5 and facilitating PIFs degradation under high R:FR light conditions.Conversely,under low R:FR light,PIFs predominantly inhibit starch synthesis.This study provides insight into the physiological and molecular functions of phyB and its downstream transcription factors HY5 and PIFs in starch synthesis regulation,shedding light on the regulatory mechanism by which plants synchronize dynamic light signals with metabolic cues to module starch synthesis.

关键词： Arabidopsis thaliana HY5 light signal phyB PIFs starch synthesis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Component analysis and risk assessment of biogas slurry from biogas plants

引用

Chinese Journal of Chemical Engineering 2022年第4期35卷 182-191页

作者： Lanting Ke Xiaobin liu Bingqing Du Yuanpeng Wang Yanmei Zheng qingbiao li Department of Chemical and Biochemical Engineering College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China College of Food and Biology Engineering Jimei UniversityXiamen 361021China

Massive amounts of biogas slurry are produced due to the development of biogas plants.The pollution features and the risk of biogas slurry were fully evaluated in this work.Thirty-one biogas slurry samples were collected from sixteen different cities and five different raw materials biogas plants(e.***.cattle manure,swine manure,straw-manure mixture,kitchen waste and chicken manure).The chemical oxygen demand(COD),ammonia nitrogen(NH_(4)^(+)-N),anions(e.g.Cl^(-1),SO_(4)^(2-),NO_(3)^(-)and PO_(4)^(3-)),antibiotics(e.***.sulphonamides,quinolones,β2-receptor agonists,macrolides,tetracyclines and crystal violet)and heavy metals(e.g.Cu,Cd,As,Cr,Hg,Zn and Pb)contents from these biogas slurry samples were systematically investigated.On this basis,risk assessment of biogas slurry was also performed.The concentrations of COD,NH_(4)^(+)-N and PO_(4)^(3-) in biogas slurry samples with chicken manure as raw material were significantly higher than those of other raw materials.Therefore,the biogas slurry from chicken manure raw material demonstrated the most serious eutrophication threat.The antibiotic contents in biogas slurry samples from swine manure were the highest among five raw materials,mostly sulphonamides,quinolones and tetracyclines.Biogas slurry revealed particularly serious arsenic contamination and moderate potential ecological risk.The quadratic polynomial stepwise regression model can quantitatively describe the correlation among NH_(4)^(+)-N,PO_(4)^(3+) and heavy metals concentration of biogas slurry.This work demonstrated a universal potential threat from biogas slurry that can provide supporting data and theoretical basis for harmless treatment and reuse of biogas slurry.

关键词： Biogas slurry Antibiotics Heavy metals Risk assessment

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Insight into the dynamic adsorption behavior of graphene oxide multichannel architecture toward contaminants

引用

Chinese Journal of Chemical Engineering 2023年第1期53卷 124-132页

作者： Jian Tian Gen li Wang He Kok Bing Tan Daohua Sun Junfu Wei qingbiao li Department of Chemical and Biochemical Engineering College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China College of Chemistry and Chemical Engineering Tiangong UniversityTianjin 300387China College of Food and Biological Engineering Jimei UniversityXiamen 361021China

Graphene oxide(GO) channels exhibit unique mass transport behaviors due to their flexibility, controllable thinness and extraordinary physicochemical properties, enabling them to be widely used for adsorption and membrane separation. Nevertheless, the adsorption behavior of nanosized contaminants within the channels of GO membrane has not been fully discussed. In this study, we fabricated a GO membrane(PGn, where n represents the deposition cycles of GO) with multi channels via the crosslinking of GO and multibranched poly(ethyleneimine)(PEI). Phenol was used as molecular probe to determine the correlations between dynamic adsorption behavior and structural parameters of the multilevel GO/PEI membrane. PG8 shows higher adsorption capacities and affinity, which is predominantly attributed to the multichannel structure providing a large specific surface for phenol adsorption, enhancing the accessibility of active sites for phenol molecules and the transport of phenol. Density functional theory calculations demonstrate that the adsorption mechanism of phenol within GO channel is energetically oriented by hydrogen bonds, which is dominated by oxygen-containing groups compared to amino groups. Particularly, the interfaces which facilitate strong π-π interaction and hydrogen bonds maybe the most active regions. Moreover, the as-prepared PG8 membrane showed outstanding performance for other contaminants such as methyl orange and Cr(VI). It is anticipated that this study will have implications for design of GO-related environmental materials with enhanced efficiency.

关键词： Graphene oxide Multichannel Adsorptive behavior Phenol DFT calculations

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Utilization of waste vanadium-bearing resources in the preparation of rare-earth vanadate catalysts for semi-hydrogenation of α,β-unsaturated aldehydes

引用

Frontiers of Chemical Science and Engineering 2022年第12期16卷 1793-1806页

作者： Yang Zhang Guowu Zhan Yibo Song Yiping liu Jiale Huang Shu-Feng Zhou Kok Bing Tan qingbiao li College of Chemical Engineering Integrated Nanocatalysts Institute(INCI)Huaqiao UniversityXiamen 361021China College of Food and Biology Engineering Jimei UniversityXiamen 361021China College of Chemistry and Chemical Engineering Xiamen UniversityXiamen 361005China

Recycling industrial solid waste not only saves resources but also eliminates environmental concerns of toxic threats.Herein,we proposed a new strategy for the utilization of petrochemical-derived carbon black waste,a waste vanadium-bearing resource(V>30000 ppm(10−6)).Chemical leaching was employed to extract metallic vanadium from the waste and the leachate containing V was used as an alternative raw material for the fabrication of vanadate nanomaterials.Through the screening of various metal cations,it was found that the contaminated Na^(+)during the leaching process showed strong competitive coordination with the vanadium ions.However,by adding foreign Ce^(3+)and Y^(3+)cations,two rare-earth vanadates,viz.,flower-like CeVO_(4)and spherical YVO_(4)nanomaterials,were successfully synthesized.Characterization techniques such as scanning electron microscopy,transmission electron microscopy,X-ray diffraction,energy-dispersive X-ray spectroscopy,Fourier-transform infrared,and N2 physisorption were applied to analyze the physicochemical properties of the waste-derived nanomaterials.Importantly,we found that rare-earth vanadate catalysts exhibited good activities toward the semi-hydrogenation ofα,β-unsaturated aldehydes.The conversion of cinnamaldehyde and cinnamic alcohol selectivity were even higher than those of the common CeVO_(4)prepared using pure chemicals(67.2%vs.27.7%and 88.4%vs.53.5%).Our work provides a valuable new reference for preparing vanadate catalysts by the use of abundant vanadium-bearing waste resources.

关键词： petrochemical solid wastes vanadium recovery resource utilization nanomaterials semi-hydrogenation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Genomic and metabolomic analysis of Bacillus licheniformis with enhanced poly-γ-glutamic acid production through atmospheric and room temperature plasma mutagenesis

引用

Frontiers of Chemical Science and Engineering 2022年第12期16卷 1751-1760页

作者： Xiaoyu Wei lijie Yang Haiyan Wang Zhen Chen Yiyuan Xu Yue Weng Mingfeng Cao qingbiao li Ning He Department of Chemical and Biochemical Engineering College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China College of Food and Biological Engineering Jimei UniversityXiamen 361021China College of life Science Xinyang Normal UniversityXinyang 464000China

Poly-γ-glutamic acid is an extracellular polymeric substance with various applications owing to its valuable properties of biodegradability,flocculating activity,water solubility,and nontoxicity.However,the ability of natural strains to produce poly-γ-glutamic acid is low.Atmospheric and room temperature plasma was applied in this study to conduct mutation breeding of Bacillus licheniformis CGMCC 2876,and a mutant strain M32 with an 11%increase in poly-γ-glutamic acid was obtained.Genome resequencing analysis identified 7 nonsynonymous mutations of ppsC encoding lipopeptide synthetase associated with poly-γ-glutamic acid metabolic pathways.From molecular docking,more binding sites and higher binding energy were speculated between the mutated plipastatin synthase subunit C and glutamate,which might contribute to the higher poly-γ-glutamic acid production.Moreover,the metabolic mechanism analysis revealed that the upregulated amino acids of M32 provided substrates for glutamate and promoted the conversion between L-and D-glutamate acids.In addition,the glycolytic pathway is enhanced,leading to a better capacity for using glucose.The maximum poly-γ-glutamic acid yield of 14.08 g·L^(–1)was finally reached with 30 g·L^(–1)glutamate.

关键词： ARTP mutagenesis Bacillus licheniformis poly-γ-glutamic acid metabolomics

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Breeding and Application Techniques of a New Rice Variety liliang-you 3822 with High Yield and Disease Resistance

引用

Plant Diseases and Pests 2024年第3期15卷 31-33,39页

作者： Hui GONG qingbiao HE Zhikuan liU Taoshi li Jianhui JIANG Yong YANG Lei XIONG Hunan Cotton Science Institute Changde 415101China Hubei lizhong Seed Industry Technology Co. Ltd.Wuhan 430072China Luxi County Agriculture and Rural Bureau Luxi 416100China Shimen County Agriculture and rural Bureau Shimen 415300China Pingjiang County Agriculture and rural Bureau Pingjiang 414500China

liliangyou 3822 is a novel indica hybrid rice variety that exhibits disease resistance,high yield,lodging resistance,and late maturity.It employs a self-selected two-line sterile line,li 38S,and a self-selected restorer line,R22.This variety was subjected to a regional test of indica late-maturing groups in the middle and lower reaches of the Yangtze River in 2020.The results demonstrated that the average yield of the variety was 9.95 t/hm 2,which was 10.67%higher than that of the control Fengliangyou 4,indicating a highly significant yield increase.In the continuous test in 2021,the average yield was 9.74 t/hm 2,representing a 6.52%increase over the control,which also exhibited a significant increase.Finally,the average yield of the two years regional test was 9.84 t/hm 2,which was 8.58%higher than that of the control.In the 2021 production test,the average yield of the variety was 9.32 t/hm 2,which was 12.19%higher than that of the control,indicating a remarkably significant yield increase.In 2022,the variety was validated by the National Crop Variety Approval Committee(GSD 20220143).

关键词： Two-line hybrid rice liliangyou 3822 Disease resistance Breeding

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano-sized Fe_2O_3/Fe_3O_4 facilitate anaerobic transformation of hexavalent chromium in soil–water systems

引用

Journal of Environmental Sciences 2017年第7期29卷 329-337页

作者： Yaxian Zhang Hua li libo Gong Guowen Dong liang Shen Yuanpeng Wang qingbiao li Department of Chemical and Biochemical Engineering College of Chemistry and Chemical EngineeringXiamen University College of Chemistry and life Science Quanzhou Normal University

The purpose of this study is to investigate the effects of nano-sized or submicro Fe_2O_3/Fe_3O_4 on the bioreduction of hexavalent chromium（Cr（VI）） and to evaluate the effects of nano-sized Fe_2O_3/Fe_3O_4 on the microbial communities from the anaerobic flooding soil.The results indicated that the net decreases upon Cr（VI） concentration from biotic soil samples amended with nano-sized Fe_2O_3（317.1 ± 2.1 mg/L） and Fe_3O_4（324.0 ± 22.2 mg/L） within21 days,which were approximately 2-fold of Cr（VI） concentration released from blank control assays（117.1 ± 5.6 mg/L）.Furthermore,the results of denaturing gradient gel electrophoresis（DGGE） and high-throughput sequencing indicated a greater variety of microbes within the microbial community in amendments with nano-sized Fe_2O_3/Fe_3O_4 than the control assays.Especially,Proteobacteria occupied a predominant status on the phylum level within the indigenous microbial communities from chromium-contaminated soils.Besides,some partial decrease of soluble Cr（VI） in abiotic nano-sized Fe_2O_3/Fe_3O_4 amendments was responsible for the adsorption of nano-sized Fe_2O_3/Fe_3O_4 to soluble Cr（VI）.Hence,the presence of nano-sized Fe_2O_3/Fe_3O_4 could largely facilitate the mobilization and biotransformation of Cr（VI） from flooding soils by adsorption and bio-mediated processes.

关键词： Chromium Iron oxide Nanoparticle Reduction High-throughput sequencing Cr（Ⅵ） reducing bacteria

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Enhanced active site extraction from perovskite LaCoO_(3) using encapsulated PdO for efficient CO_(2) methanation

引用

Journal of Energy Chemistry 2021年第2期30卷 9-19,I0001页

作者： Kuncan Wang Wen li Junjie Huang Jiale Huang Guowu Zhan qingbiao li Department of Chemical and Biochemical Engineering College of Chemistry and Chemical EngineeringNational Laboratory for Green Chemical Productions of AlcoholsEthers and EstersKey Lab for Chemical Biology of Fujian ProvinceXiamen UniversityXiamen 361005FujianChina Department of Ecological Engineering for Environmental Sustainability College of the Environment&EcologyXiamen UniversityXiamen 361102FujianChina College of Chemical Engineering Huaqiao UniversityXiamen 361021FujianChina College of Food and Biology Engineering Jimei UniversityXiamen 361021FujianChina

The extraction of metallic nanoparticles from perovskite-type oxides(ABO_(3)) under mild reducing conditions is a novel way to prepare well-dispersed supported catalysts(B/AOd). Herein, we found that the encapsulated PdO in perovskite LaCoO_3(PdO@LaCoO_3) could facilitate the phase transformation of the perovskite structure at a low temperature owing to both strong H2 spillover of Pd and intimate interaction between the encapsulated PdO and LaCoO_(3). The pure LaCoO_(3) without PdO was relatively inert to CO_(2) hydrogenation(CO_(2) conversion 99% CH4 selectivity. The characterization results demonstrated that the catalytically active Co2 C was in-situ formed by carburization of the extracted Co0 during CO_(2) methanation for the PdO@LaCoO_(3) sample. Whereas, the LaCoO_(3) with surface supported PdO(PdO/LaCoO_(3)) showed a weak interaction and remained a perovskite structure with few Co_(2)C active centers after the catalytic reaction, which was similar to the parent LaCoO_(3). Accordingly, the PdO/LaCoO_(3) showed an inferior catalytic performance with 31.8% CO_(2) conversion and 87.4% CH_(4) selectivity. Therefore, the designed encapsulation structure of PdO within perovskite is critical to extract metallic NPs from perovskite-type oxides, which has the potential to prepare other integrated nanocatalysts based on perovskite-type oxides.

关键词： Perovskite reduction PdO nanoparticles Encapsulated structure Supported catalyst CO_(2)methanation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effects of substrate types on the transformation of heavy metal speciation and bioavailability in an anaerobic digestion system

引用

Journal of Environmental Sciences 2021年第3期33卷 361-372页

作者： Xiarong Zheng Kuanhuai Wu Pengju Sun Siyu Zhouyang Yuanpeng Wang Haitao Wang Yanmei Zheng qingbiao li Department of Chemical and Biochemical Engineering College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China College of Food and Biological Engineering Jimei UniversityXiamen 361021China

Chemical speciation can fundamentally affect the potential toxicity and bioavailability of heavy metals.The transformation of heavy metal speciation and change of bioavailability were investigated in an anaerobic digestion(AD)system using four different substrates(pig manure(PM),cattle manure(CAM),chicken manure(CHM)and rice straw(RS)).The results obtained indicated that the total contents of heavy metals in PM,CHM and GAM were higher than in RS and decreased in the order Zn>Cu>Ni>Pb>As>Cd in all substrates.Moreover,the speciation with the largest proportion for each heavy metal was the same both in the different substrates and the biogas residues.Among them,Zn,Ni,Cd and As were mainly in the reducible fraction(F2),while Cu was mainly in the oxidizable fraction(F3)and Pb occurred predominantly in the residual fraction(F4).Our results further indicated that the AD process had a greater effect on the speciation of heavy metals in CHM and PM,but less on CAM and RS.The rates of change in bioavailability followed the order PM>CHM>CAM>RS.Changes in organic matter,humic acid or local metal ion environment as a result of AD were inferred as likely mechanisms leading to the transformation of heavy metal speciation.These results enhanced our understanding of the behavior of heavy metals in AD and provided a new perspective for the treatment and disposal of the substrates.

关键词： Anaerobic digestion Heavy metal Speciation Bioavailability

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

State of arts on the bio-synthesis of noble metal nanoparticles and their biological application

引用

Chinese Journal of Chemical Engineering 2021年第2期34卷 272-290页

作者： Kok Bing Tan Daohua Sun Jiale Huang Tareque Odoom-Wubah qingbiao li Department of Chemical and Biochemical Engineering College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Department of Biomedical Engineering College of Engineering and Computer ScienceWentworth Institute of Technology550 Huntington AvenueBostonMA 02115United States College of Food and Biology Engineering Jimei UniversityXiamen 361021China

Nanomaterials are materials in which at least one of the dimensions of the particles is 100 nm and below.There are many types of nanomaterials,but noble metal nanoparticles are of interest due to their uniquely large surface-to-volume ratio,high surface area,optical and electronic properties,high stability,easy synthesis,and tunable surface functionalization.More importantly,noble metal nanoparticles are known to have excellent compatibility with bio-materials,which is why they are widely used in biological applications.The synthesis method of noble metal nanoparticles conventionally involves the reduction of the noble metal salt precursor by toxic reaction agents such as NaBH4,hydrazine,and formaldehyde.This is a major drawback for researchers involved in biological application researches.Hence,the bio-synthesis of noble metal nanoparticles(NPs)by bio-materials via bio-reduction provides an alternative method to synthesize noble metal nanoparticles which are potentially non-toxic and safer for biological application.In this review,the bio-synthesis of noble metal nanoparticle including gold nanoparticle(AuNPs),silver nanoparticle(AgNPs),platinum nanoparticle(PtNPs),and palladium nanoparticle(PdNPs)are first discussed.This is followed by a discussion of these biosynthesized noble metal in biological applications including antimicrobial,wound healing,anticancer drug,and bioimaging.Based on these,it can be concluded that the study on bio-synthesized noble metal nanoparticles will expand further involving bio-reduction by unexplored bio-materials.However,many questions remain on the feasibility of bio-synthesized noble metal nanoparticles to replace existing methods on various biological applications.Nevertheless,the current development of the biological application by bio-synthesized noble metal NPs is still intensively ongoing,and will eventually reach the goal of full commercialization.

关键词： Noble metal nanoparticles Bio-synthesis Bio-templating Bio-material Bio-logical application Nanomaterials

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：