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Rapid gene expression change in a novel synthesized allopolyploid population of cultivated peanut×Arachis doigoi cross by cDNA-SCoT and HFO-TAG technique

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Journal of Integrative Agriculture 2017年第5期16卷 1093-1102页

作者： he liang-qiong TANG Rong-hua JIANG Jing XIONG Fa-qian HUANG Zhi-peng WU Hai-ning GAO Zhong-kui ZHONG Rui-chun he Xin-hua HAN Zhu-qiang Cash Crops Research Institute/Guangxi Crop Genetic Improvement and Biotechnology Laboratory Guangxi Academy of Agricultural SciencesNanning 530007P.R.China Guangxi University Nanning 530004P.R.China

AIIopolyploidy has played an important role in plant evolution and heterosis. Recent studies indicate that the process of wide hybridization and （or） polyploidization may induce rapid and extensive genetic and epigenetic changes in some plant species. To better understand the allopolyploidy evolutionism and the genetic mechanism of Arachis interspecific hybridization, this study was conducted to monitor the gene expression variation by cDNA start codon targeted polymorphism （cDNA-SCoT） and cDNA high-frequency oligonucleotide-targeting active gene （cDNA-HFO-TAG） techniques, from the hybrids （F1） and newly synthesized allopolyploid generations （S0-$3） between tetraploid cultivated peanut Zhongkaihua 4 with diploid wild one Arachis doigoi. Rapid and considerable gene expression variations began as early as in the FI hybrid or immediately after chromosome doubling. Three types of gene expression changes were observed, including complete silence （gene from progenitors was not expressed in all progenies）, incomplete silence （gene expressed only in some progenies） and new genes activation. Those silent genes mainly involved in RNA transcription, metabolism, disease resistance, signal transduction and unknown functions. The activated genes with known function were almost retroelements by cDNA-SCoT technique and all metabolisms by cDNA-HFO-TAG. These findings indicated that interspecific hybridization and ploidy change affected gene expression via genetic and epigenetic alterations immediately upon allopolyploid formation, and some obtained transcripts derived fragments （TDFs） probably could be used in the research of molecular mechanism of Arachis allopolyploidization which contribute to thwe genetic diploidization of newly formed allopolyploids. Our research is valuable for understanding of peanut evolution and improving the utilization of putative and beneficial genes from the wild peanut.

关键词： peanut allopolyploidy gene expression start codon-targeted polymorphism high-frequency oligonucleotide-targeting active gene

甘蔗/花生间作对根系生理及根际土壤养分的影响

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中国油料作物学报 2024年第4期46卷 889-896页

作者：邱江梅吴海宁黄志鹏贺梁琼李忠钟瑞春韩柱强蒋菁黎冰唐秀梅唐荣华广西壮族自治区农业科学院经济作物研究所广西南宁530007 广西作物遗传改良生物技术重点开放实验室广西南宁530007 贺州学院广西贺州542800

为探明甘蔗/花生间作对根系生理及根际土壤养分的影响,本文设置了甘蔗单作、花生单作、甘蔗/花生间作模式,系统分析了不同种植模式下根系分泌物、根系浸提物和根际土壤养分的变化及其相关性。结果表明:间作甘蔗根系分泌的总氨基酸及根... 详细信息

为探明甘蔗/花生间作对根系生理及根际土壤养分的影响,本文设置了甘蔗单作、花生单作、甘蔗/花生间作模式,系统分析了不同种植模式下根系分泌物、根系浸提物和根际土壤养分的变化及其相关性。结果表明:间作甘蔗根系分泌的总氨基酸及根系浸提液中的总糖显著高于单作,间作花生根系分泌的总糖显著高于单作。间作甘蔗根际土壤的碱解氮(alkali-hydrolyzed nitrogen,AN)、有效磷(available phosphorus,AP)、速效钾(available potassium,AK)和土壤有机质(soil organic matter,SOM)显著高于单作甘蔗,间作种植显著降低了花生根际土壤的有效磷、速效钾和pH。间作和单作甘蔗的酸性磷酸酶、过氧化氢酶、脲酶和蔗糖酶差异不显著,间作花生的过氧化氢酶显著高于单作花生。根系分泌的酚酸与土壤有机质呈显著负相关,总糖与蔗糖酶呈显著正相关,氨基酸与脲酶呈显著正相关;根系浸提液中的有机酸与pH呈显著正相关,氨基酸与SOM呈显著负相关、与AK呈极显著负相关。脲酶与AK呈显著负相关,蔗糖酶与SOM呈极显著负相关。综上,甘蔗/花生间作主要影响根系分泌氨基酸、总糖和酚酸的代谢活动,且可显著提高甘蔗的土壤有效养分。

关键词：间作系统根系分泌物根系浸提物土壤养分土壤酶

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Carbon emission reduction: Contribution of geothermal energy and practice in China

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China Geology 2024年第1期7卷 161-164页

作者： liang Wang Li-qiong Jia Natural Resources Integrated Survey Command Center China Geological SurveyMinistry of Natural ResourcesBeijing 100055China Development and Research Center China Geological SurveyMinistry of Natural ResourcesBeijing 100037China

As a kind of natural energy from the earth’s interior,geothermal energy is characterized by large reserve,wide distribution,good stability,high utilization coefficient,and positive effects of energy-saving and *** is of great significance for promoting green and low-carbon energy transition,reducing greenhouse gas emission,and achieving global climate goals and sustainable economic ***,it has been highly recognized and valued by lots of countries around the world,and has become one of the most important clean energy sources that countries are accelerating to develop and *** potential of the global geothermal energy resource is estimated to be 1.25×1027 J,equivalent to 4.27×10^(16) t of standard coal,among which the geothermal resource between 0 km and 5 km is 1.45×10^(26) J,equivalent to 4.95×1015 t of standard coal(China Geological Survey,2018).

关键词： energy utilize interior

Modeling and Analysis of Risk Propagation and Loss Causing Capacity for Key Nodes in Cyber-Physical Coupled Power Network

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Complex System Modeling and Simulation 2024年第2期4卷 124-136页

作者： Dongqi Liu qiong Zhang Haolan liang Tao Zhan Rui Wang National Key Laboratory of Disaster Prevention and Reduction for Power Grid Changsha University of Science and TechnologyChangsha 410114China the School of Electrical and Information Engineering Changsha University of Science and TechnologyChangsha 410114China the College of Electrical and Information Engineering Hunan Institute of EngineeringXiangtan 411104China the School of Systems Engineering National University of Defense TechnologyChangsha 410003China

The modern power system has evolved into a cyber-physical system with deep coupling of physical and information domains,which brings new security *** at the problem that the“information-physical”cross-domain attacks with key nodes as springboards seriously threaten the safe and stable operation of power grids,a risk propagation model considering key nodes of power communication coupling networks is proposed to study the risk propagation characteristics of malicious attacks on key nodes and the impact on the ***,combined with the complex network theory,a topological model of the power communication coupling network is established,and the key nodes of the coupling network are screened out by Technique for Order Preference by Similarity to Ideal Solution(TOPSIS)method under the comprehensive evaluation index based on topological characteristics and physical ***,a risk propagation model is established for malicious attacks on key nodes to study its propagation characteristics and analyze the state changes of each node in the coupled ***,two loss-causing factors:the minimum load loss ratio and transmission delay factor are constructed to quantify the impact of risk propagation on the coupled ***,simulation analysis based on the IEEE 39-node system shows that the probability of node being breached(α)and the security tolerance of the system(β)are the key factors affecting the risk propagation characteristics of the coupled network,as well as the criticality of the node is positively correlated with the damage-causing *** proposed methodological model can provide an effective exploration of the diffusion of security risks in control systems on a macro level.

关键词： cyber-physical system risk propagation complex network loss causative factor

Carbon emission reduction:Contribution of photovoltaic power and practice in China

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China Geology 2024年第2期7卷 371-376页

作者： liang Wang Li-qiong Jia Geng Xie Xi-jie Chen Yang Liu Natural Resources Integrated Survey Command Center China Geological SurveyMinistry of Natural ResourcesBeijing 100055China Development and Research Center China Geological SurveyMinistry of Natural ResourcesBeijing 100037China Center for Geophysical Survey China Geological SurveyLangfang 065000China

As a clean and renewable form of energy,photovoltaic(PV)power generation converts solar energy into electrical energy,reducing the consumption of fossil fuels and significantly lowering greenhouse gas *** the global t... 详细信息

关键词： convert power emissions

Multifunctional cellular carbon foams derived from chitosan toward self-cleaning, thermal insulation, and highly efficient microwave absorption properties

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Nano Research 2024年第3期17卷 927-938页

作者： Beibei Zhan Yanling Hao Xiaosi Qi Yunpeng Qu Junfei Ding Jing-liang Yang Xiu Gong Yanli Chen qiong Peng Wei Zhong College of Physics Guizhou Province Key Laboratory for Photoelectrics Technology and ApplicationGuizhou UniversityGuiyang 550025China Minzu Normal University of Xingyi Xingyi 562400China National Laboratory of Solid State Microstructures and Jiangsu Provincial Laboratory for NanoTechnology Nanjing UniversityNanjing 210093China

To adapt the practical demand,designing and constructing the multifunctional microwave absorbers(MAs)is the key future direction of research and ***,effective integrating the multiple functions into a single material remains a huge ***,cellular carbon foams(CCFs)with different porous structures were elaborately designed and fabricated in high efficiency through a facile continuous freeze-drying and carbonization processes using a sustainable biomass chitosan as the *** obtained results revealed that the thermal treated temperature and g-C_(3)N_(4) amount played a great impact on the carbonization degrees,pore sizes,and morphologies of CCFs,which led to their tunable electromagnetic(EM)parameters,improved conduction loss,and polarization loss *** to the special cellular structure,the designed CCFs samples simultaneously displayed the strong absorption capabilities,broad absorption bandwidths,and thin matching ***,the as-prepared CCFs exhibited the strong hydrophobicity and good thermal insulation,endowing its attractive functions of self-cleaning and thermal ***,our findings not only presented a facile approach to produce different porous structures of CCFs,but also provided an effective strategy to develop multifunctional high-performance MAs on basis of three-dimensional CCFs.

关键词： multifunctional microwave absorbers carbon foams cellular structure self-cleaning thermal insulation

Tough Semi-interpenetrating Polyvinylpyrrolidone/Polyacrylamide Hydrogels Enabled by Bioinspired Hydrogen-bonding Induced Phase Separation

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Chinese Journal of Polymer Science 2024年第5期42卷 591-603,I0006页

作者： qiong-Jun Xu Zhao-Yang Yuan Chang-Cheng Wang Hao liang Yu Shi Hai-Tao Wu Hu Xu Jing Zheng Jin-Rong Wu State Key Laboratory of Polymer Materials Engineering College of Polymer Science and EngineeringSichuan UniversityChengdu610065China

Semi-interpenetrating(semi-IPN)hydrogels formed by the continuous interpenetration of cross-linked polymer network and linear non-crosslinked polymer with multifunctionality are widely used in biomedical and other ***,the negative impact of linear polymer on the homogeneity of the cross-linked network often leads to a decrease in the mechanical properties of semi-IPN hydrogels and severely limits their ***,a bioinspired hydrogen-bonding induced phase separation strategy is presented to construct the tough semi-IPN polyvinylpyrrolidone/polyacrylamide hydrogels(named PVP/PAM hydrogels),including the linear polymer polyvinylpyrrolidone(PVP)and cross-linked polyacrylamide(PAM)*** resultant PVPx/PAM hydrogels exhibit unique phase separation induced by the hydrogen bonding between PVP and PAM and affected by the amount of substance of ***,the phase separation of PVPx/PAM hydrogels results in excellent mechanical properties with a strain of 2590%,tensile strength of 0.28 MPa and toughness of 2.17 MJ/m^(3).More importantly,the hydrogen bonding between PVP and PAM firstly disrupts to dissipate energy under external forces,so the PVPx/PAM hydrogels exhibit good self-recovery properties and outperform chemically cross-linked PAM hydrogels in impact resistance and damping *** is believed that the PVPx/PAM hydrogels with hydrogen-bonding induced phase separation possess more potential application prospects.

关键词： Tough Semi-interpenetrating networks Polyvinylpyrrolidone/polyacrylamide Hydrogels Phase separation

Ternary-phase layered cathodes toward ultra-stable and highrate sodium ion storage

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Rare Metals 2024年第4期43卷 1589-1598页

作者： Wen-Ji Yin Pei-Dan Su Qi Lu Xiao-qiong Li Ji-Ming Peng Teng-Fei Zhou Ge-Meng liang Yu-liang Cao Hong-Qiang Wang Qing-Yu Li Si-Jiang Hu Guangxi Key Laboratory of Low Carbon Energy Materials School of Chemistry and Pharmaceutical SciencesGuangxi Normal UniversityGuilin541004China Institutes of Physical Science and Information Technology Anhui UniversityHefei230601China Department of Chemistry and Pharmaceutical Sciences Guilin Normal CollegeGuilin541199China College of Chemistry and Chemical Engineering Huanggang Normal UniversityHuanggang438000China School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaide5005Australia Engineering Research Center of Organosilicon Compounds and Materials of Ministry of Education College of Chemistry and Molecular SciencesWuhan UniversityWuhan430072China

With the shortage of lithium resources,sodiumion batteries(SIBs)are considered one of the most promising candidates for lithium-ion batteries.P2-type and O3-type layered oxides are one of the few cathodes that can access high energy ***,they usually exhibit structural change,capacity decay,and slow Na ion ***,we present layered ternary-phase cathodes with P2,P3 and O3 phases by a lattice doping strategy,which is demonstrated by X-ray diffraction(XRD)*** the characteristics of P2,P3 and O3 phases,the layered composites show performance improvement during long-term battery *** particular,Na_(0.7)Li_(0.1)Co_(0.3-)Fe_(0.3)Mn_(0.3)O_(2)(NLCFM)delivers a reversible capacity of120.1 mAh·g^(-1)at 0.1C(1.0C=175 mA·g^(-1))with a superior capacity retention of 72.5%after 1000 cycles *** work offers insights into the development of advanced cathode materials for SIBs.

关键词： Sodium-ion battery Cathode material Layered oxides Lattice doping Mixed phase

Mixed‑Dimensional Assembly Strategy to Construct Reduced Graphene Oxide/Carbon Foams heterostructures for Microwave Absorption,Anti‑Corrosion and Thermal Insulation

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Nano-Micro Letters 2024年第11期16卷 1-18页

作者： Beibei Zhan Yunpeng Qu Xiaosi Qi Junfei Ding Jiao‑jing Shao Xiu Gong Jing‑liang Yang Yanli Chen qiong Peng Wei Zhong Hualiang Lv College of Physics Guizhou Province Key Laboratory for Photoelectrics Technology and ApplicationGuizhou UniversityGuiyang City 550025People’s Republic of China College of Materials and Metallurgy Guizhou UniversityGuiyang City 550025People’s Republic of China National Laboratory of Solid State Microstructures and Jiangsu Provincial Laboratory for NanoTechnology Nanjing UniversityNanjing 210093People’s Republic of China Department of Materials Science and Laboratory of Advanced Materials Fudan UniversityShanghai 200433People’s Republic of China

Considering the serious electromagnetic wave(EMW)pollution problems and complex application condition,there is a pressing need to amalgamate multiple functionalities within a single ***,the effective integration of diverse functions into designed EMW absorption materials still faces the huge ***,reduced graphene oxide/carbon foams(RGO/CFs)with two-dimensional/three-dimensional(2D/3D)van der Waals(vdWs)heterostructures were meticulously engineered and synthesized utilizing an efficient methodology involving freeze-drying,immersing absorption,secondary freeze-drying,followed by carbonization *** to their excellent linkage effect of amplified dielectric loss and optimized impedance matching,the designed 2D/3D RGO/CFs vdWs heterostructures demonstrated commendable EMW absorption performances,achieving a broad absorption bandwidth of 6.2 GHz and a reflection loss of-50.58 dB with the low matching ***,the obtained 2D/3D RGO/CFs vdWs heterostructures also displayed the significant radar stealth properties,good corrosion resistance performances as well as outstanding thermal insulation capabilities,displaying the great potential in complex and variable ***,this work not only demonstrated a straightforward method for fabricating 2D/3D vdWs heterostructures,but also outlined a powerful mixeddimensional assembly strategy for engineering multifunctional foams for electromagnetic protection,aerospace and other complex conditions.

关键词： Multifunctionality Reduced graphene oxide/carbon foams 2D/3D van der Waals heterostructures Electromagnetic wave absorption Thermal insulation