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Nuclear phylogenomics of angiosperms and insights into their relationships and evolution

Journal of Integrative Plant Biology 2024年第3期66卷 546-578页

作者： Guojin Zhang Hong Ma College of Life Sciences Hunan Normal UniversityChangsha 410081China Department of Biology 510 Mueller LaboratoryHuck Institutes of the Life SciencesThe Pennsylvania State UniversityUniversity ParkPA 16802USA

Angiosperms(flowering plants) are by far the most diverse land plant group with over 300,000 species. The sudden appearance of diverse angiosperms in the fossil record was referred to by Darwin as the “abominable mystery,”hence contributing to the heightened interest in angiosperm evolution. Angiosperms display wide ranges of morphological, physiological,and ecological characters, some of which have probably influenced their species richness. The evolutionary analyses of these characteristics help to address questions of angiosperm diversification and require well resolved phylogeny. Following the great successes of phylogenetic analyses using plastid sequences,dozens to thousands of nuclear genes from next-generation sequencing have been used in angiosperm phylogenomic analyses, providing well resolved phylogenies and new insights into the evolution of angiosperms. In this review we focus on recent nuclear phylogenomic analyses of large angiosperm clades, orders, families,and subdivisions of some families and provide a summarized Nuclear Phylogenetic Tree of Angiosperm Families. The newly established nuclear phylogenetic relationships are highlighted and compared with previous phylogenetic results. The sequenced genomes of Amborella,Nymphaea, Chloranthus, Ceratophyllum, and species of monocots, Magnoliids, and basal eudicots, have facilitated the phylogenomics of relationships among five major angiosperms clades. All but one of the 64 angiosperm orders were included in nuclear phylogenomics with well resolved relationships except the placements of several orders. Most families have been included with robust and highly supported placements, especially for relationships within several large and important orders and families.Additionally, we examine the divergence time estimation and biogeographic analyses of angiosperm on the basis of the nuclear phylogenomic frameworks and discuss the differences compared with previous analyses. Furthermore,we discuss the implications of nuclear phylogenomic analyses on ancestral

关键词： angiosperms evolution flowering plants nuclear gene phylogenomics phylogeny

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Rif1 interacts with non-canonical polycomb repressive complex PRC1.6 to regulate mouse embryonic stem cells fate potential

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Cell Regeneration 2022年第1期11卷 246-266页

作者： Lu Li Pishun Li Jiale Chen Li Li Yunfan Shen Yangzixuan Zhu Jiayi Liu Lu Lv Song Mao Fang Chen Guang Hu Kai Yuan Hunan Key Laboratory of Molecular Precision Medicine Department of OncologyXiangya HospitalCentral South UniversityChangshaHunanChina Hunan Key Laboratory of Medical Genetics School of Life SciencesCentral South UniversityChangshaHunanChina Changjun High School ChangshaHunanChina Zhounan High School ChangshaHunanChina Epigenetics and Stem Cell Biology Laboratory National Institute of Environ-mental Health SciencesResearch Triangle ParkNC 2779USA National Clinical Research Center for Geriatric Disorders Xiangya HospitalCentral South UniversityChangshaHunanChina The Biobank of Xiangya Hospital Central South UniversityChangshaHunanChina

Mouse embryonic stem cells(mESCs)cycle in and out of a transient 2-cell(2C)-like totipotent state,driven by a com-plex genetic circuit involves both the coding and repetitive sections of the genome.While a vast array of regulators,including the multi-functional protein Rif1,has been reported to influence the switch of fate potential,how they act in concert to achieve this cellular plasticity remains elusive.Here,by modularizing the known totipotency regulatory factors,we identify an unprecedented functional connection between Rif1 and the non-canonical polycomb repres-sive complex PRC1.6.Downregulation of the expression of either Rif1 or PRC1.6 subunits imposes similar impacts on the transcriptome of mESCs.The LacO-LacI induced ectopic colocalization assay detects a specific interaction between Rif1 and Pcgf6,bolstering the intactness of the PRC1.6 complex.Chromatin immunoprecipitation followed by sequencing(ChIP-seq)analysis further reveals that Rif1 is required for the accurate targeting of Pcgf6 to a group of genomic loci encompassing many genes involved in the regulation of the 2C-like state.Depletion of Rif1 or Pcgf6 not only activates 2C genes such as Zscan4 and Zfp352,but also derepresses a group of the endogenous retroviral element MERVL,a key marker for totipotency.Collectively,our findings discover that Rif1 can serve as a novel auxiliary component in the PRC1.6 complex to restrain the genetic circuit underlying totipotent fate potential,shedding new mechanistic insights into its function in regulating the cellular plasticity of embryonic stem cells.

关键词： 2C-like Totipotency MERVL Rif1 PRC1.6

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Research on Influence Factors of Landscape Health of National Wetland park from Tourists' Perspective:A Case Study of changsha Yanghu National Wetland park

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Journal of Landscape Research 2022年第4期14卷 53-56,60页

作者： YANG Li ZHANG Yiqiong College of Tourism Hunan Normal UniversityChangshaHunan 410000China

This paper designed the index system for the evaluation of landscape health influence factors of Yanghu Wetland park from tourists’ perspective,applied the principal component method to extract 19 indexes of 5 public factors,i.***.policy system,ecological environment,functional management,landscape facility,tourists’ behavior,to analyze the influence factors for the landscape health of national wetland parks.The results showed that tourists’ evaluation varied greatly on the significance of 19 indexes and their satisfaction in the influence factor system of landscape health,then used IPA modified model to classify the factors influencing landscape health of Yanghu Wetland park into 4 categories,defined the orientation of the 19 indexes in the 4 categories,and proposed the corresponding landscape health optimization strategies based on the analysis results of IPA modified model.

关键词： Yanghu Wetland park Landscape health IPA modified model Optimization strategy

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Evidence for moiréintralayer excitons in twisted WSe_(2)/WSe_(2) homobi layer superlattices

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Light(Science & Applications) 2022年第7期11卷 1493-1500页

作者： Biao Wu Haihong Zheng Shaofei Li Junnan Ding Jun He Yujia Zeng Keqiu Chen Zongwen Liu Shula Chen Anlian Pan Yanping Liu School of Physics and Electronics Hunan Key Laboratory for Super-microstructure and Ultrafast ProcessCentral South University932 South Lushan RoadChangshaHunan 410083China State Key Laboratory of High-Performance Complex Manufacturing Central South University932 South Lushan RoadChangshaHunan 410083China Department of Applied Physics School of Physics and ElectronicsHunan UniversityChangsha 410082China School of Chemical and Biomolecular Engineering The University of SydneySydneyNSW 2006Australia The University of Sydney Nano Institute The University of SydneySydneyNSW 2006Australia Hunan Institute of Optoelectronic Integration College of Materials Science and EngineeringHunan UniversityChangshaHunan 410082China Shenzhen Research Institute of Central South University A510aVirtual University BuildingSouthern DistrictHigh-tech Industrial ParkYuehai StreetNanshan DistrictShenzhenChina

Recent advances in twisted van der Waals heterostructure superlattices have emerged as a powerful and attractive platform for exploring novel condensed matter physics due to the interplay between the moirépotential and Coulomb interactions.The moirésuperlattices act as a periodic confinement potential in space to capture interlayer excitons(IXs),resulting in moiréexciton arrays,which provide opportunities for quantum emitters and many-body physics.The observation of moiréIXs in twisted transition-metal dichalcogenide(TMD)heterostructures has recently been widely reported.However,the capture and study of the moiréintralayer excitons based on TMD twisted homobilayer(T-HB)remain elusive.Here,we report the observation of moiréintralayer excitons in a WSe_(2)/WSe_(2) T-HB with a small twist angle by measuring PL spectrum.The multiple split peaks with an energy range of 1.55-1.73 eV are different from that of the monolayer WSe_(2) exciton peaks.The split peaks were caused by the trapping of intralayer excitons via the moirépotential.The confinement effect of the moirépotential on the moiréintralayer excitons was further demonstrated by the changing of temperature,laser power,and valley polarization.Our findings provide a new avenue for exploring new correlated quantum phenomena and their applications.

关键词： twisted layer quantum

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Energy Loss Analysis of Distributed Rooftop Photovoltaics in Industrial parks

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Energy Engineering 2023年第2期120卷 511-527页

作者： Yu Xiao Kai Li HongqiaoHuang Haibo Tan Hua Li State Grid Hunan Electric Power Corporation Limited ChangshaChina Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology ChangshaChina Hunan Institute of Metrology and Inspection ChangshaChina

The analysis of the loss of distributed photovoltaic power generation systems involves the interests of energy users,energy-saving service companies,and power grid companies,so it has always been the focus of the industry and society in some manner or another.However,the related analysis for an actual case that considers different cooperative corporations’benefits is lacking in the presently available literature.This paper takes the distributed rooftop photovoltaic power generation project in an industrial park as the object,studies the analysis and calculation methods of line loss and transformer loss,analyzes the change of transformer loss under different temperatures and different load rates,and compares the data and trend of electricity consumption and power generation in industrial parks before and after the photovoltaic operation.This paper explores and practices the analysis method of the operating loss of distributed photovoltaic power generation and provides an essential reference for the benefit analysis and investment cost estimation of distributed photovoltaic power generation systems in industrial parks.The analyzed results reveal that the change loss is stable after the photovoltaic is connected,and there is no additional transformer loss.And before and after the photovoltaic system installation,there was no significant change in the total monthly data difference between the total meter and the sub-meter.

关键词： Distributed photovoltaic generation line loss transformer loss power generation

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Key Techniques of Artificial Incubation and Brooding of Bonasa bonasia

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Animal Husbandry and Feed Science 2019年第5期11卷 157-160页

作者： Liu Hao Huang Huiwen Heilongjiang Research Institute of wildlife Harbin 150040China changsha wildlife park Changsha 410009China

The key techniques of artificial incubation and brooding of Bonasa bonasia during breeding technology promotion was summed up in the paper.Electric incubation and dielectric incubation,electric brooding and dielectric brooding were compared with each other.The results showed that the effect of dielectric inoculation was poor,and there were no significant difference between electric brooding and dielectric brooding.

关键词： Bonasa bonasia Artificial incubation Brooding

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Artificial Incubation of Tetrao parvirostris

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Animal Husbandry and Feed Science 2020年第1期12卷 41-42页

作者： Liu Hao Huang Huiwen Heilongjiang Research Institute of wildlife Harbin 150040China changsha wildlife park Changsha 410009China

The eggs of Tetrao parvirostris were artificially incubated in Huzhong area of Heilongjiang Province.The results showed that the average incubation rate of 377 eggs was 86.7%;the suitable temperature for artificial incubation was 37.5℃;and the relative humidity was(60±5)%.The incubation lasted 24-26 d,and the weight loss ratio of artificially incubated eggs was 21.6%.The regression equation between egg weight and incubation days was Y=54.31-0.37X(γ=0.98).

关键词： Tetrao parvirostris Artificial incubation

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Artificial Incubation of Bonasa bonasia Eggs

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Animal Husbandry and Feed Science 2020年第2期12卷 43-44页

作者： Liu Hao Huang Huiwen Heilongjiang Research Institute of wildlife Harbin 150040China changsha wildlife park Changsha 410009China

Bonasa bonasia eggs were artificially incubated.The results showed that the temperature of 37.5-38℃(slightly lower temperature in the late stage),the relative humidity of 55%-60%in the middle stage and 60%-70%in the ... 详细信息

关键词： Bonasa bonasia Egg Artificial incubation

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Inhibition of HeLa cell growth by doxorubicin-loaded and tuftsinconjugated arginate-PEG microparticles

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Bioactive Materials 2018年第1期3卷 48-54页

作者： Tianmu Hu Anwar Saeed Ahmed Qahtan Lei Lei Zhixin Lei Dapeng Zhao Hemin Nie Institute of Bionanotechnology and Tissue Engineering College of Life SciencesHunan UniversityChangsha410082China Department of Orthodontics Xiangya Stomatological HospitalCentral South UniversityChangsha410008China changsha DMY Medical Technology Co. LtdChangsha410005China Shenzhen Research Institute of Hunan University Nanshan Hi-new Technology and Industry ParkShenzhen518057China

In order to improve the release pattern of chemotherapy drug and reduce the possibility of drug resistance,poly(ethylene glycol amine)(PEG)-modified alginate microparticles(ALG-PEG MPs)were developed then two different mechanisms were employed to load doxorubicin(Dox):1)forming Dox/ALGPEG complex by electrostatic attractions between unsaturated functional groups in Dox and ALG-PEG;2)forming Dox-ALG-PEG complex through EDC-reaction between the amino and carboxyl groups in Dox and ALG,respectively.Additionally,tuftsin(TFT),a natural immunomodulation peptide,was conjugated to MPs in order to enhance the efficiency of cellular uptake.It was found that the Dox-ALG-PEGTFT MPs exhibited a significantly slower release of Dox than Dox/ALG-PEG-TFT MPs in neutral medium,suggesting the role of covalent bonding in prolonging Dox retention.Besides,the release of Dox from these MPs was pH-sensitive,and the release rate was observably increased at pH 6.5 compared to the case at pH 7.4.Compared with Dox/ALG-PEG MPs and Dox-ALG-PEG MPs,their counterparts further conjugated with TFT more efficiently inhibited the growth of HeLa cells over a period of 48 h,implying the effectiveness of TFT in enhancing cellular uptake of MPs.Over a period of 48 h,Dox-ALG-PEG-TFT MPs inhibited the growth of HeLa cells less efficiently than Dox/ALG-PEG-TFT MPs but the difference was not significant(p>0.05).In consideration of the prolonged and sustained release of Dox,Dox-ALGPEG-TFT MPs possess the advantages for long-term treatment.

关键词： Controlled release Tuftsin Cellular uptake Chemotherapy

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Domesticated Feed of Tetrao parvirostris

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Animal Husbandry and Feed Science 2020年第3期12卷 43-44页

作者： Liu Hao Huang Huiwen Heilongjiang Research Institute of wildlife Harbin 150040China changsha wildlife park Changsha 410009China

The digestive characteristics,wild feeding habits and food nutrients of Tetrao parvirostris were analyzed,in order to develop the feed that could meet the nutritional needs of T.parvirostris.

关键词： Tetrao parvirostrisy Digestive characteristics Feeding habits Nutrient Feed

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