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Plant Diversity 2021年第2期43卷 93-101页

作者： Ran Meng Ying Meng Yong-Ping Yang ze-long nie Key Laboratory of Plant Resources Conservation and Utilization College of Biological Resources and Environmental SciencesJishou UniversityJishou 416000HunanChina Xishuangbanna Tropical Botanical Garden Chinese Academy of SciencesMengla 666303YunnanChina Kunming Institute of Botany Chinese Academy of SciencesKunming 650201YunnanChina

Maianthemum is a genus with more than 35 species from the tribe Polygonateae(Asparagaceae),widely distributed between North to Central Americas and eastern Asia with high diversity in the easternHimalayas to the Hengduan Mountains of SW *** most species from SW China form a well-supported clade,phylogenetic relationships within this clade remain *** a broad level of taxon sampling and an extensive character sampling fromeight DNA regions,this study intends to revisit the phylogeny and biogeography of the genus to better understand the divergence patterns of species from SW *** results suggested the monophyly of Maianthemum with recognition of nine strongly supported clades,but backbone relationships among these clades remained largely *** the SWChina clade,individuals from the same species are grouped into different *** results revealed that the fast radiation of the SWChina cladewas occurred in the eastern Himalayas,followed by subsequent radiation in the Hengduan Mountains in the *** disjunctions of Maianthemum in the Northern Hemisphere appear to have occurred multiple times during the late Miocene to the Pliocene,likely resulted by a combination of both vicariance and long-distance dispersal events.

关键词： Biogeography Eastern Asia Hengduan mountains Intercontinental disjunction Maianthemum North America

Climate-influenced boreotropical survival and rampant introgressions explain the thriving of New World grapes in the north temperate zone

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Journal of Integrative Plant Biology 2023年第5期65卷 1183-1203页

作者： ze-long nie Richard Hodel Zhi-Yao Ma Gabriel Johnson Chen Ren Ying Meng Stefanie M.Ickert-Bond Xiu-Qun Liu Elizabeth Zimmer Jun Wen College of Biology and Environmental Sciences Jishou UniversityJishou 416000China Department of Botany National Museum of Natural HistorySmithsonian InstitutionWashingtonDC20013-7012USA Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518000China Key Laboratory of Plant Resources Conservation and Sustainable Utilization South China Botanical GardenChinese Academy of SciencesGuangzhou510650China Herbarium(ALA) University of Alaska Museum of the NorthUniversity of Alaska FairbanksFairbanksAK 99775USA Department of Biology and Wildlife University of Alaska FairbanksFairbanksAK 99775USA Key Laboratory of Horticultural Plant Biology College of Horticulture and Forestry ScienceHuazhong Agricultural UniversityWuhan 430070China

The north temperate region was characterized by a warm climate and a rich thermophilic flora before the Eocene,but early diversifications of the temperate biome under global climate change and biome shift remain ***,it is becoming clear that hybridization/introgression is an important driving force of speciation in plant ***,we applied analyses from biogeography and phylogenetic networks to account for both introgression and incomplete lineage sorting based on genomic data from the New World Vitis,a charismatic component of the temperate North American flora with known and suspected gene flow among *** inference and fossil evidence suggest that the grapes were widely distributed from North America to Europe during the Paleocene to the Eocene,followed by widespread extinction and survival of relicts in the tropical New *** the climate warming in the early Miocene,a Vitis ancestor migrated northward from the refugia with subsequent diversification in the North American *** found strong evidence for widespread incongruence and reticulate evolution among nuclear genes within both recent and ancient lineages of the New World ***,the organellar genomes showed strong conflicts with the inferred species tree from the nuclear *** phylogenomic analyses provided an important assessment of the wide occurrence of reticulate introgression in the New World Vitis,which potentially represents one of the most important mechanisms for the diversification of Vitis species in temperate North America and even the entire temperate Northern *** scenario we report here may be a common model of temperate diversification of flowering plants adapted to the global climate cooling and fluctuation in the Neogene.

关键词： boreotropical refugia introgression New World grapes phylogenomics temperate diversification

Cytological study on the genus Syncalathium (Asteraceae-Lactuceae),an endemic taxon to alpine scree of the Sino-Himalayas

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Journal of Systematics and Evolution 2009年第3期47卷 226-230页

作者： 1,2Jian-Wen ZHANG 1ze-long nie 1Hang SUN 1(Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China) 2(Graduate University of Chinese Academy of Sciences, Beijing 100049, China) (Key Laboratory of Biodiversity and Biogeography Kunming Institute of Botany Chinese Academy of Sciences Kunming 650204 China) (Graduate University of Chinese Academy of Sciences Beijing 100049 China)

Cytological characters of four species in Syncalathium (Asteraceae: Lactuceae), a small genus with six identified species endemic to alpine scree of the Sino-Himalayan region, are surveyed in this report. Three species (Syncalathium pilosum, Syncalathium chrysocephalum, and Syncalathium disciforme) are examined for the first time. Combined with our previous counts, five species have been cytologically investigated from the genus and the results indicated that all species are diploid with the basic somatic chromosome number of x=8. The karyotype asymmetry of Syncalathium souliei is 2A, distinct from the other four species of 1A, and the remaining species are divided into two subgroups with different karyotypes, consistent with their morphological features. The significance of the cytological evolution of Syncalathium is briefly discussed.

关键词： Asteraceae chromosome numbers diploidy karyotype Syncalathium.

Cucurbit[8]uril-regulated face-to-face dimerization assembly enhanced photosensitization and photocatalysis

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Science China Chemistry 2024年第5期67卷 1605-1612页

作者： Haigen nie Die Hu Zhiyao zeng Yan Fan Yaxin Zhai Xin-long Ni Key Laboratory of Chemical Biology and Traditional Chinese Medicine Ministry of Educational of ChinaKey Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan ProvinceCollege of Chemistry and Chemical EngineeringHunan Normal UniversityChangsha 410081China Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Department of PhysicsHunan Normal UniversityChangsha 410081China

In water, N,N′-diarylpyridinium thiazolo[5,4-d]thiazole guests(G1–G3) were encapsulated by cucurbit[8]uril(Q[8]) to construct Q[8]_(3)/G_(2) complexes, in which the encapsulated G molecules exist as an exact face-to-face dimer. These complexation behaviors have been indicated by proton nuclear magnetic resonance(~1H NMR) spectroscopy and isothermal titration calorimetry(ITC),and have been confirmed by X-ray single crystal structural analysis of Q[8]_(3)/G2_(2). While free guests G1–G3 have no ability to sensitize singlet oxygen, they all become effective singlet oxygen sensitizers when complexed with Q[8]. By irradiation of white light, Q[8]_(3)/G_(2) complexes induced selective oxidation of aryl sulfide to aryl sulfoxide in good yields and selective oxidation of dimethyl sulfide(DMS) to dimethyl sulfoxide(DMSO) in excellent yields without over-oxidation to dimethyl sulfone(DMSO_(2))even for elongated irradiation. High-yield photo-oxidation of DMS to DMSO_(2) was only achieved by irradiation of blue light in the presence of Q[8]_(3)/G1_(2), which was also effective in photobleaching of Rhodamine B in water. The higher photo-oxidation power of Q[8]_(3)/G1_(2) has been ascribed to an additional generation of reactive oxygen species besides singlet oxygen.

关键词： host-guest interaction dimerization macrocycles photosensitization

Polyploidy and new chromosome counts in Anaphalis(Asteraceae:Gnaphalieae) from the Qinghai-Tibet Plateau of China

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Journal of Systematics and Evolution 2010年第1期48卷 58-64页

作者： 1,2 Ying MENG 1 Hang SUN 1,2 Yong-Ping YANG 1 ze-long nie 1(Laboratory of Biodiversity and Biogeography,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming 650204,China) 2(Institute of Tibetan Plateau Research at Kunming,Chinese Academy of Sciences,Kunming 650204,China) (Laboratory of Biodiversity and Biogeography Kunming Institute of Botany Chinese Academy of Sciences Kunming 650204 China) (Institute of Tibetan Plateau Research at Kunming Chinese Academy of Sciences Kunming 650204 China)

Anaphalis is one of the largest genera of the Asian Gnaphalieae(Asteraceae) and is most diversified on the Qinghai-Tibet *** chromosome numbers and karyomorphology of six species from seven populations were investigated for the first time for this *** numbers have been newly documented for four species:Anaphalis deserti(2n=56=24 median m+24 submedian sm+8 acrocentric st);Anaphalis plicata(2n=56=26m+30sm);Anaphalis xylorhiza(2n=28=2 median point M+14m+12sm);and Anaphalis rhododactyla(2n=56=32m+24sm).Two further counts are in agreement with the previously reported numbers,that is,Anaphalis royleana(2n=28=4M+6m+18sm) and Anaphalis margaritacea(2n=28=12m+16sm).A new polyploid cytotype(2n=56=26m+30sm) was found in the Zougong population of *** is for the first time reported for Anaphalis,with four out of seven counts being *** cytological results suggest that polyploids might have played an important role in the evolution of Anaphalis on the Qinghai-Tibet Plateau.

关键词： Anaphalis DC. Asteraceae chromosome number Gnaphalieae polyploidy Qinghai-Tibet Plateau.

Chromosome counts and karyotypes in Chaetoseris and Stenoseris (Asteraceae-Cichorieae) from the Hengduan Mountains of SW China

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Journal of Systematics and Evolution 2011年第4期49卷 339-346页

作者： 1Tao DENG 1,2Ying MENG 1Hang SUN 1ze-long nie 1(Key Laboratory of Biodiversity and Biogeography,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming 650204,China) 2(Institute of Tibetan Plateau Research at Kunming,Chinese Academy of Sciences,Kunming 650204,China) (Key Laboratory of Biodiversity and Biogeography Kunming Institute of Botany Chinese Academy of Sciences Kunming 650204 China) (Institute of Tibetan Plateau Research at Kunming Chinese Academy of Sciences Kunming 650204 China)

Chaetoseris and Stenoseris are two morphologically close genera from the tribe Cichorieae of the sunflower family and they are endemic in alpine eastern Himalayas to the Hengduan Mountains of SW *** chromosome numbers and karyotypes are reported for 12 populations representing eight species of Chaetoseris and two species of Stenoseris from the Hengduan Mountains *** species are new and the other two provide confirmation of previous *** Chaetoseris and Stenoseris taxa are diploidy with 2n = 16 and their basic number is tentatively suggested as x = *** of Chaetoseris and Stenoseris are similar to each other with 2A and 2B for the former and 2A for the *** data of chromosomal numbers and karyotypes support a close relationship of the two *** no polyploids are found for these two genera and it seems that polyploidization has played a minor role in their evolutionary speciation in the Hengduan Mountains region.

关键词： Asteraceae Chaetoseris Cichorieae Hengduan Mountains karyotype Stenoseris.

Anchoring Ru clusters to highly defective N-doped carbon nanotubes via a thermal-shock strategy for stable industrial hydrogen evolution

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Nano Research 2024年第6期17卷 5261-5269页

作者： Zhiming Li Xinyu Li Haiqing Ma Chenliang Ye Hongan Yu long nie Meng Zheng Jin Wang College of Materials Science and Engineering Shenzhen UniversityShenzhen 518060China School of Chemistry and Materials Science Anhui Normal UniversityWuhu 241002China Department of Power Engineering North China Electric Power UniversityBaoding 071003China

Non-Pt or low-Pt catalysts capable for stable generation of hydrogen via water electrolysis at an industrial level of current density are highly *** of strong metal-support connection is beneficial to improve the performance stability of *** we employed highly defective N-doped carbon nanotubes(d-N-CNT)as the support to achieve uniform and firm anchoring of Ru clusters(~1.9 nm)via a thermal-shock *** as-prepared Ru/d-N-CNT catalyst shows excellent catalytic activity for hydrogen evolution reaction(HER)in alkaline media and requires an overpotential(ƞ)of 12 mV at 10 mA·cm^(−2)and 116 mV at 200 mA·cm^(−2)with a Ru loading of 0.025 mg·cm^(−2).Impressively,Ru/d-N-CNT presents robust stability for HER at both low current density(stable for at least 1000 h at 10 mA·cm^(−2))and the industrial level of current density(stable for at least 100 h at 1000 mA·cm^(−2)),remarkably outperforming commercial Pt/C and Ru/*** highly defective nature of the N-CNT support endowed the as-prepared Ru/d-N-CNT catalyst with strong metal-support adhesion that efficiently suppressed agglomeration as well as obscission of Ru ***,the rich defects increased the surface energy of the N-CNT support and resulted in improved hydrophilicity as evidenced by the liquid contact angle measurement and the bubble evolution process,which also played an important role in stabilizing the HER performance especially at large current density.

关键词： thermal-shock method hydrogen evolution reaction large-current-density Ru cluster

Simulation and evaluation study of atmospheric aerosol nonsphericity as a function of particle size

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Particuology 2024年第7期90卷 281-291页

作者： Qianjun Mao Xin nie School of Urban Construction Wuhan University of Science and TechnologyWuhan430065China College of New Energy and Materials Northeast Petroleum UniversityDaqing163318China

Aerosol nonsphericity causes great uncertainty in radiative forcing assessments and climate *** considerable studies have attempted to quantify this uncertainty,the relationship between aerosol nonsphericity and particle size is usually not considered,thus reducing the accuracy of the *** this study,a coupled inversion algorithm combining an improved stochastic particle swarm optimization algorithm and angular light scattering is used for the nonparametric estimation of aerosol nonsphericity variation with particle size,and the optimal sample selection method is employed to screen the *** on the verification of inversion accuracy,the variation of aerosol aspect ratio with particle size based on the ellipsoidal model in global regions has been obtained from Aerosol Robotic Network(AERONET)data,and the effect of nonsphericity on radiative forcing and dry deposition has been *** results show that the aspect ratio increases with particle size in all regions,with the maximum ranging from 1.4 to 1.8 in the desert,reflecting the differences in aerosol composition at different particle *** radiation calculations,considering aerosol nonsphericity makes the aerosol cooling effect weaker and surface radiative fluxes increase,but hardly changes the aerosol absorption,with maximum differences of 9.22%and 22.12%at the bottom and top of the atmosphere,***,the differences in radiative forcing between aspect ratios as a function of particle size and not varying with particle size are not significant,averaging less than 2%.Besides,the aspect ratio not varying with particle size underestimates the deposition velocity of small particles and overestimates that of large particles compared to that as a function of particle size,with maximum differences of 7%and 4%,respectively.

关键词： Aerosol nonsphericity Inversion Aspect ratio Radiative forcing Dry deposition velocity

Information Protocol Equilibrium in n-insider Perfect Competition with a Random Deadline

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Acta Mathematicae Applicatae Sinica 2024年

作者： Qi-hong nie Ji-xiu QIU Ji-ze LI Yong-hui ZHOU School of Big Data and Computer Sciences Guizhou Normal University School of Mathematical Sciences Guizhou Normal University

This paper studies a model of n insiders with perfect information trading on a risky asset with value normally distributed and disclosed at a random deadline. We propose a concept of information protocol equilibrium under semi-strong efficient pricing, consisting of an n-profile of insider trading strategies with terminal residual information protocols, and find that if a common protocol on terminal residual information before trading is obeyed by all insiders, then, in the market with more than two insiders there exists a uique equilibrium only when it requires to release common partial information eventually, or it does not exist if it requires to release all or not any; but in the market with a single insider, the insider may release all private information eventually to make a maximal profit. Thereby, the existence and uniqueness of information protocol equilibrium among n insiders are deduced. Finally, numerical results illustrate some market characteristics of equilibria with different information protocols required before trading.

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青藏高原与横断山被子植物区系演化的细胞地理学特征

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生物多样性 2017年第2期25卷 218-225页

作者：王家坚彭智邦孙航聂泽龙孟盈吉首大学生物资源与环境科学学院植物资源保护与利用重点实验室湖南吉首416000 中国科学院昆明植物研究所东亚植物多样性与生物地理学重点实验室昆明650201

青藏高原与横断山集特殊的地理位置和复杂的地形地势以及高度丰富的植物区系成分于一体,成为世界上研究生物多样性起源与演化的热点地区之一。我们对这一地区被子植物的染色体数据进行了全面的统计分析,结果表明新多倍体在该地区只约占... 详细信息

青藏高原与横断山集特殊的地理位置和复杂的地形地势以及高度丰富的植物区系成分于一体,成为世界上研究生物多样性起源与演化的热点地区之一。我们对这一地区被子植物的染色体数据进行了全面的统计分析,结果表明新多倍体在该地区只约占23%的比例,远低于其他高山地区,这可能是由于这一地区特殊的地质历史或者复杂的地形和生境等因素所导致的。低基数的二倍体占近一半的比例(43.3%),说明了二倍体水平上的染色体结构和核型进化也是本地区物种分化的另一重要机制。古多倍体,即高基数二倍体,也占有较大的成分(33.7%)。本地区物种在细胞学遗传演化途径上的多样性与这一地区极高的物种多样性和特有性可能存在一定的联系。通过对青藏高原及横断山地区被子植物区系进化中染色体演化机制的研究,为探讨东亚以及北半球其他植物区系物种进化、高山植物区系起源和演化等许多重大问题提供了有益的帮助。

关键词：青藏高原细胞地理染色体进化多倍体被子植物