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Temporal control of the Aux/IAA genes BnIAA32 and BnIAA34 mediates Brassica napus dual shade responses

Journal of Integrative Plant Biology 2024年第5期66卷 928-942页

作者： Yafei Li Yiyi Guo Yue Cao Pengguo Xia Dongqing Xu Ning Sun Lixi Jiang Jie Dong Institute of Crop Science College of Agriculture and BiotechnologyZhejiang UniversityHangzhou 310058China Key Laboratory of Plant secondary Metabolism and Regulation of Zhejiang Province College of Life Sciences and MedicineZhejiang Sci-TechUniversityHangzhou310018China State Key Laboratory of Crop Genetics and Germplasm Enhancement College of AgricultureNanjing Agricultural UniversityNanjing 210095China Key Laboratory of Growth Regulation and Transformation Research of Zhejiang Province School of Life SciencesWestlake UniversityHangzhou 310024China

Precise responses to changes in light quality are crucial for plant growth and *** example,hypocotyls of shade-avoiding plants typically elongate under shade *** this typical shade-avoidance response(TSR)has been studied in Arabidopsis(Arabidopsis thaliana),the molecular mechanisms underlying shade tolerance are poorly *** we report that ***(Brassica napus)seedlings exhibit dual shade *** addition to the TSR,*** seedlings also display an atypical shade response(ASR),with shorter hypocotyls upon perception of early-shade ***-wide selective sweep analysis indicated that ASR is associated with light and auxin ***,genetic studies demonstrated that phytochrome A(BnphyA)promotes ASR,whereas BnphyB inhibits *** ASR,YUCCA8 expression is activated by early-shade cues,leading to increased auxin *** inhibits hypocotyl elongation,as young *** seedlings are highly sensitive to ***,two non-canonical AUXIN/INDOLE-3-ACETIC ACID(Aux/IAA)repressor genes,BnIAA32 and BnIAA34,are expressed during this early ***32 and BnIAA34 inhibit hypocotyl elongation under shade conditions,and mutations in BnIAA32 and BnIAA34 suppress ***,our study demonstrates that the temporal expression of BnIAA32 and BnIAA34 determines the behavior of *** seedlings following shade-induced auxin biosynthesis.

关键词： Brassica napus high-density planting IAA32/34 light signal transduction shade response temporal gene expression

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Preparation of bifunctional electrocatalyst by recycling heavy metal ions from wastewater using EDTAD-functionalized MOF as highly efficient adsorbent

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Rare Metals 2024年第10期43卷 5105-5116页

作者： Yue Qian Pei-Xue Fu Rui-Ze Yin Han-Ni Yang Si-Yang Li Wei-Wei Xiong Fen-Fen Zheng Jun-Hao Zhang Ai-Hua Yuan Huan Pang school of Environmental and Chemical Engineering Jiangsu University of Science and Technology school of Chemistry and Chemical Engineering Yangzhou University

The recovery and subsequent reuse of heavy metal ions from industrial wastewater are crucial for promoting sustainable development,but they also presen significant *** this article,ethylenediaminetetraacetic dianhydride （EDTAD）,which possesses strong metal chelating ability,is covalently attached to MIL-101-NH2（Fe）,resulting in a significant improvement in the removal rate of heavy metal ions in ***,the recovered waste metal ions are transformed into high-performance FeNi3/NiFe2O4@NC dual-functional oxygen evolution reaction （OER） and oxygen reduction reaction （ORR） ***,FeNi3/NiFe2O4@NC exhibits outstanding OER performance,with only a264 mV overpotential at 10 mA·*** functiona theory （DFT） calculations reveal that the synergistic effect of the FeNi3/NiFe2O4@NC heterostructure can enhance conductivity,optimize the free energy of*to OH*during OER reaction,and promote catalytic *** work not only improves the removal rate of heavy metal ions but also obtains high-performance catalysts,while providing a new approach for the treatment and secondary utilization of heavy metal ion wastewater as well as the preparation of low-cost catalysts.

关键词： Bifunctional electrocatalyst Covalently modified MOF Ethylenediaminetetraacetic dianhydride Heavy metals

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Oxygen-assisted zinc recovery from electric arc furnace dust using magnesium chloride

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International Journal of Minerals,Metallurgy and Materials 2024年第10期31卷 2300-2311页

作者： Jingdong Huang Xiao Yang school of Materials Science and Engineering Zhejiang UniversityHangzhou 310027China school of Engineering Westlake UniversityHangzhou 310030China

Electric arc furnace(EAF)dust is an important secondary resource containing metals,such as zinc(Zn)and iron(Fe).Recover-ing Zn from EAF dust can contribute to resource recycling and reduce environmental ***,the high chemical stability of ZnFe_(2)O_(4)in EAF dust poses challenges to Zn *** address this issue,a facile approach that involves oxygen-assisted chlorination using molten MgCl_(2)is *** work focused on elucidating the role of O2 in the reaction between ZnFe_(2)O_(4)and molten MgCl_(2).The results demonstrate that MgCl_(2)effectively broke down the ZnFe_(2)O_(4)structure,and the high O2 atmosphere considerably promoted the sep-aration of Zn from other components in the form of ZnCl_(2).The presence of O2 facilitated the formation of MgFe_(2)O_(4),which stabilized Fe and prevented its ***,the excessive use of MgCl_(2)resulted in increased evaporation loss,and high temperatures pro-moted the rapid separation of *** on these findings,we successfully extracted ZnCl_(2)-enriched volatiles from practical EAF dust through oxygen-assisted *** optimized conditions,this method achieved exceptional Zn chlorination percentage of over 97%within a short period,while Fe chlorination remained below 1%.The resulting volatiles contained 85wt%of ZnCl_(2),which can be further processed to produce metallic *** findings offer guidance for the selective recovery of valuable metals,particularly from solid wastes such as EAF dust.

关键词： electric arc furnace dust zinc oxygen magnesium chloride chlorination

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Base-controlled NHC-Ru-catalyzed transfer hydrogenation andα-methylation/transfer hydrogenation of ketones using methanol

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Chinese Chemical Letters 2024年第7期35卷 276-280页

作者： Ming Huang Xiuju Cai Yan Liu Zhuofeng Ke school of pharmacy School of clinical pharmacyGuangdong Pharmaceutical UniversityGuangzhou 510006China school of Materials Science&Engineering PCFM LabSchool of ChemistrySun Yat-sen UniversityGuangzhou 510275China school of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China

Herein,we report the NHC-Ru catalyst system that realizes the chemo-selective transformation of ketones with *** simply changing the base,a broad range of structurally diverse ketones,could be selectively and efficiently converted to the correspondingβ-methylated secondary alcohols or secondary ***,this catalytic system was very effective for the synthesis of bio-related molecules and deuterated alcohols,as well as the three-component coupling between methyl ketones,primary alcohols,and *** reaction mechanism was further revealed by experiment and DFT mechanistic investigations.

关键词： Ru complexes Methanol Ketones β-Methylated secondary alcohols Transfer hydrogenation

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Anthropogenic mineral generation and its potential resource supply:The case of niobium

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Science China Earth Sciences 2024年第8期67卷 2583-2591页

作者： Xianlai ZENG Moisés Gómez Mahmoud BAKRY Yong GENG Jinhui LI school of Environment Tsinghua UniversityBeijing 100084China school of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China school of International and Public Affairs Shanghai Jiao Tong UniversityShanghai 200030China

The strategy of carbon neutrality is reshaping the global landscape of resource flow and *** the final sink of geological minerals,the proliferated anthropogenic minerals,also called secondary resources,play an increasingly important role in resource supply *** is a critical metal that lacks full concern for its *** fundamental principle of niobium circularity is to recycle and maintain the material as close to the manufacturing process as *** we estimate the niobium-containing applications lost at their end-of-life,underscoring the imperative to minimize such ***,we elucidate the extraction processes for scrap and alloy quantities throughout the industry's *** from anticipated waste generated by the majority of niobium applications,a forecast indicates a potential loss of approximately 168 kt by 2090 in the absence of ***,with a recycling efficiency of 90%for niobium,the projected loss diminishes to approximately 16 *** delve into the significance of niobium's circular economy and explore various aspects that demand further investigation for a seamless transition from linear to circular practices.

关键词： Niobium Anthropogenic mineral Circular economy Recycling Sustainability

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Study on Coded Permutation Entropy of Finite Length Gaussian White Noise Time Series

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Chinese Journal of Electronics 2024年第1期33卷 185-194页

作者： Huihui SUN Xiaofeng ZHANG school of Physics and Information Technology Shaanxi Normal University

As an extension of permutation entropy(PE), coded permutation entropy(CPE) improves the performance of PE by making a secondary division for ordinal patterns defined in PE. In this study, we provide an exploration of the statistical properties of CPE using a finite length Gaussian white noise time series theoretically. By means of the Taylor series expansion, the approximate expressions of the expected value and variance of CPE are deduced and the Cramér-Rao low bound(CRLB) is obtained to evaluate the performance of the CPE estimator. The results indicate that CPE is a biased estimator, but the bias only depends on relevant parameters of CPE and it can be easily corrected for an arbitrary time series. The variance of CPE is related to the encoding patterns distribution,and the value converges to the CRLB of the CPE estimator when the time series length is large enough. For a finitelength Gaussian white noise time series model, the predicted values can match well with the actual values, which further validates the statistic theory of CPE. Using the theoretical expressions of CPE, it is possible to better understand the behavior of CPE for most of the time series.

关键词： Time series analysis White noise Predictive models Taylor series Entropy Encoding Time measurement

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H∞ Robustness for Distributed Control in Autonomous Microgrids Considering Cyber Disturbances

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CSEE Journal of Power and Energy Systems 2024年第2期10卷 696-706页

作者： Ge Cao Guannan Lou Wei Gu Lina Sheng school of Electrical Engineering Southeast UniversityNanjing 210096China

The physical connections and logical relationships between microgrids and communication networks allow microgrids to develop into typical cyber-physical systems(CPSs).With the extensive use of open communication mechanisms,the impact of cyber disturbances in public communication networks cannot be *** this paper,a parameter optimal method for a distributed secondary controller based on the robust control theory and consensus algorithm is presented to enhance the robustness of a secondary control system under data disturbance,parameter perturbation,and time ***,a distributed secondary control strategy of microgrids is demonstrated that coordinates frequency and voltage restoration and power ***,considering the impact of cyber events on the secondary control,a distributed robust controller gain design method is proposed to satisfy the H∞ performance *** solution of the distributed robust control is transformed into a linear matrix in equation problem and latency margin is simultaneously ***,a test microgrid CPS is simulated with and without time delay to investigate the impact of cyber events on system operational states and the effectiveness and robustness of the proposed method.

关键词： Cyber disturbance cyber-physical lsystem distributed control microgrid robust H∞control

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Compositionally graded high-voltage P2-type cathode with superior structural stability and redox kinetics for advanced Na-ion batteries

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Nano Research 2024年第4期17卷 2755-2762页

作者： Peiyu Hou Mohan Dong Zhenbo Sun Feng Li school of Physics and Technology University of JinanJinan 250022China

Layered P2-type cathodes with high voltage,large capacity,and easy synthesis show great potential for developing sodium(Na)-ion batteries(NIBs).However,the P2–O2 phase transition makes their structural degradation and the Na^(+)/vacancy ordering lowers their redox ***,we rationally propose a compositionally graded P2-type cathode,where nickel(Ni)and manganese(Mn)fractions decrease gradually,and cobalt(Co)content increases contiguously from the inside to the outside of a secondary *** these particles,the Ni/Mn-based compound delivers high capacity and high *** the surface of particles,the Co/Mn-based solid solution offers a stable buffer *** from these synergistic effects,this graded P2-type cathode shows the elimination of P2–O2 transformation even when charged to 4.4 V,which enables good structural stability,maintaining capacity retention reaching~80%within 300 ***,the Na^(+)/vacancy ordering superstructure is further suppressed,and the Na^(+)diffusion kinetics is significantly *** proposed graded structure with optimized chemical composition offers a new perspective for eliminating the unwanted phase transition and thus enhancing the electrochemistry of high-voltage layered cathodes for advanced NIBs.

关键词： Na-ion battery P2-type cathode composition regulation phase transition redox stability

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Antibacterial and cytotoxic metabolites produced by Streptomyces tanashiensis BYF-112 isolated from Odontotermes formosanus

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Chinese Journal of Natural Medicines 2024年第9期22卷 822-830页

作者： WU Jun SONG Tao ZHANG Le HUANG Zhongdi HUANG Fang YIN Caiping ZHANG Shuxiang LIU Xinhua ZHANG Yinglao school of Life Science Anhui Agricultural UniversityHefei 230036China school of Pharmacy Anhui Medical UniversityHefei 230036China

Chemical investigations of the termite-associated Streptomyces tanashiensis BYF-112 resulted in the discovery of four novel alkaloid derivatives: vegfrecines A and B(1 and 2), exfoliazone A(3), and venezueline H(7), in addition to nine known metabolites(4-6, 8-13). The structures of these compounds were elucidated through comprehensive spectroscopic analysis and comparison with existing literature data. Antibacterial assays revealed that viridomycin A(11) exhibited potent antibacterial activity against Staphylococcus aureus, with a zone of inhibition(ZOI) of 12.67 mm, in comparison to a ZOI of 17.67 mm for the positive control gentamicin sulfate. Viridomycin A(11) showed moderate activity against Micrococcus tetragenus and Pseudomonas syringae pv. actinidae, with ZOI values of 15.50 and 14.33 mm, respectively, which were inferior to those of gentamicin sulfate(34.67 and 24.00mm). Viridomycin F(12) also exhibited moderate antibacterial effects against S. aureus, M. tetragenus, and P. syringae pv. actinidae,with ZOI values of 8.33, 16.50, and 10.83 mm, respectively. Cytotoxicity assays demonstrated that viridobruunine A(5), exfoliazone(6), viridomycin A(11), and X-14881E(13) exhibited significant cytotoxicity against human malignant melanoma(A375), ovarian cancer(SKOV-3), and gastric cancer(MGC-803) cell lines, with IC_(50) values ranging from 4.61 to 19.28 μmol·L^(-1). Furthermore, bioinformatic analysis of the complete genome of S. tanashiensis suggested a putative biosynthetic gene cluster(BGC) responsible for the production of compounds 1-12. These findings indicate that the secondary metabolites of insect-associated S. tanashiensis BYF-112hold promise as potential sources of novel antibacterial and anticancer agents.

关键词： Odontotermes formosanus Streptomyces tanashiensis Alkaloid Cytotoxic activity Antibacterial activity Biosynthetic pathway

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The ERF transcription factor LTF1 activates DIR1 to control stereoselective synthesis of antiviral lignans and stress defense in Isatis indigotica roots

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Acta Pharmaceutica Sinica B 2024年第1期14卷 405-420页

作者： Ruibing Chen Jian Yu Luyao Yu Liang Xiao Ying Xiao Junfeng Chen Shouhong Gao Xianghui Chen Qing Li Henan Zhang Wansheng Chen Lei Zhang Department of Pharmaceutical Botany School of PharmacyNaval Medical UniversityShanghai 200433China Research and Development Center of Chinese Medicine Resources and Biotechnology Shanghai University of Traditional Chinese MedicineShanghai 201203China Department of Pharmacy Shanghai Changzheng HospitalNaval Medical UniversityShanghai 200003China school of Medicine Shanghai UniversityShanghai 200433China Institute of Edible Fungi Shanghai Academy of Agricultural SciencesNational Engineering Research Center of Edible FungiKey Laboratory of Edible Fungi Resources and Utilization(South)Ministry of AgricultureShanghai 201403China College of Life Sciences and Medicine Key Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang ProvinceZhejiang Sci-Tech UniversityHangzhou 310018China State Key Laboratory of Dao-di Herbs Beijing 100700China

Lignans are a powerful weapon for plants to resist stresses and have diverse bioactive functions to protect human *** the mechanisms of stereoselective biosynthesis and response to stresses of lignans is important for the guidance of plant ***,we identified the complete pathway to stereoselectively synthesize antiviral(-)-lariciresinol glucosides in Isatis indigotica roots,which consists of three-step sequential stereoselective enzymes DIR1/2,PLR,and ***1 was further identified as the key gene in respoJanuary 2024nse to stresses and was able to trigger stress defenses by mediating the elevation in lignan ***,the phytohormone-responsive ERF transcription factor LTF1 colocalized with DIR1 in the cell periphery of the vascular regions in mature roots and helped resist biotic and abiotic stresses by directly regulating the expression of *** systematic results suggest that DIR1 as the first common step of the lignan pathway cooperates with PLR and UGT71B2 to stereoselectively synthesize(-)-lariciresinol derived antiviral lignans in *** roots and is also a part of the LTF1-mediated regulatory network to resist *** conclusion,the LTF1-DIR1 module is an ideal engineering target to improve plant Defenses while increasing the content of valuable lignans in plants.

关键词： Lignans Stereoselective synthesis Stress resistance Dirigent protein ERF

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