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Analysis of Genetic Similarity for Improved Japonica Rice Varieties from Different Provinces and Cities in China

Agricultural Sciences in China 2010年第8期9卷 1093-1100页

作者： SHU Ai-ping ZHANG Yuan-yuan cao Gui-lan lu Qin ZHANG San-yuan HAN Long-zhi Institute of Crop Sciences Chinese Academy of Agricultural Sciences/National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI)/Key Laboratory of Crop Germplasm Resources and Utilization Ministry of Agriculture Beijing 100081 P.R. China College of Crop Science Fujian Agricultural and Forestry University Fuzhou 350002 P.R. China Rice Research Institute Jiangxi Academy of Agricultural Sciences Nanchang 330200 P.R.China Institute of Rice Research Jilin Academy of Agricultural Sciences Gongzhuling 136100 P.R.China

To provide a genetic basis for japonica rice breeding, the genetic similarity and cluster of 139 accessions of improved japonica rice varieties from 12 provinces and cities of China were analyzed using 34 SSR markers. Totally 198 alleles were detected among these improved japonica rice varieties with the average number of alleles per pair of primers was 5.3235. RM320, RM531, RM1, RM286, and RM336 showed more alleles, which were 15, 12, 11, 9, and 9, respectively. RM320, RM336, RM286 and RM531 showed higher genetic diversity indexes; which were 2.3324, 2.0292, 1.8996, and 1.7820, respectively. The range of genetic similar index among improved japonica rice varieties from different provinces was from 0.321 to 0.914, with the average of 0.686. There was a high genetic similarity among improved japonica rice varieties from Heilongjiang, Jilin, Liaoning, Ningxia, and Yunnan, which were located in similar latitude or similar ecological environment, while there was a low genetic similarity between improved japonica rice varieties from Guizhou and Jiangsu, and other provinces which were located in more different latitudes and ecological environments. The markers of RM320, RM531, RM1, RM286, and RM336 fit to be used in analysis of genetic diversity for improved japonica rice variety. The genetic similarity among improved japonica rice varieties from different provinces was closely associated with genetic basis of parents, and was also correlated with latitude and ecological environment where the varieties were bred.

关键词： improved japonica rice variety genetic similarity genetic basis of parent ecological and climatic environment SSR marker

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Morphological characteristics of homozygous wild rice phytoliths and their significance in the study of rice origins

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Science China Earth Sciences 2022年第1期65卷 107-117页

作者： Xiangan TANG Houyuan lu Zhibin cao Jinshui XIE School of Agriculture Sciences Jiangxi Agricultural UniversityNanchang 330045China Key Laboratory of Cenozoic Geology and Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Jiangxi Academy of Agricultural Sciences Nanchang 330200China

The analysis of wild rice cell structures,tissues,organs,and other morphological characteristics and the development of identification markers for wild rice are the basis for identifying the origins and evolution of prehistorical rice ***,contemporary wild rice strains are often subject to gene introgression from domesticated rice cultivated by humans during the evolutionary process,which may affect the accuracy of wild rice identification *** means that how to eliminate the effects of gene introgression from domesticated rice and other plants on the identification of origin markers,and the purification of the morphological characteristics of wild rice have become critical in research to identify the origin of *** this study,we compared and analysed the phytolith morphologies of three common wild rice species(Oryza rufipogon Griff.)from various habitats and one species of ectopically preserved homozygous common wild rice after six consecutive generations of *** found that the morphology of the bulliform phytolith in the homozygous wild rice with reduced domestication gene introgression had three significant differences compared with native wild rice:(1)an overall reduction in size(body length decreased from 41.9μm in VLnativeto 38.6μm in VLhomozygous);(2)an increase in the proportion of the long-stalked phenotype,with the ratio of B/A decreasing from 1.22±0.47 in B/Anativeto 0.92±0.30 in B/Ahomozygous;and(3)a decrease in the number of fish-scale decorations,with the proportion of bulliform phytoliths with≥9 fish-scale decorations reduced from 53.4%in native wild rice to 37.2%in homozygous wild ***,this study provides a reliable reference for the identification of rice origins using rice phytolith morphology.

关键词： Dongxiang wild rice Common wild rice Bulliform phytolith Homozygous lineage Native habitats Rice origins

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Boundedness of Multilinear Caldern–Zygmund Singular Operators on Morrey–Herz Spaces with Variable Exponents

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Acta Mathematica Sinica,English Series 2014年第7期30卷 1180-1194页

作者： Yan lu Yue ping ZHU School of Xinglin Nantong University School of Science Nantong University

In this paper, we introduce Morrey-Herz spaces MKq.p（·）α（·）,λ with variable exponents α（·） and p（·）, and prove the boundedness of multilinear Calderdn-Zygmund singular operators on the product of these... 详细信息

关键词： Morrey-Herz spaces variable exponents multilinear Calder6n-Zygmund singular operators

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Preparation of PdCo Bimetallic Hollow Nanospheres and its Electrocatalytic Activity for Oxidation of Formic Acid

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Chinese Chemical Letters 2006年第12期17卷 1623-1626页

作者： Ya Wen TANG Shuang cao Ling Ling ZHANG Jian Chun BAO ping ZHOU Tian Hong lu Department of Chemistry Nanjing Normal University Nanjing 210097 Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022

The PdCo bimetallic hollow nanospheres with 80 nm average diameter and around 9.0 nm thickness of the shell were prepared with a special reduction method and characterized with transmission electron microscopy （TEM）, X-ray diffraction （XRD） and energy dispersive spectroscopy （EDS）. The electrochemical measurements illustrated that the electrocatalytic activity of the PdCo bimetallic hollow nanospheres for the oxidation of formic acid is much higher than that of the Pd solid nanospheres.

关键词： PdCo hollow nanosphere catalyst formic acid.

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Aquaporin-4 gene silencing protects injured neurons after early cerebral infarction

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Neural Regeneration Research 2015年第7期10卷 1082-1087页

作者： Zhan-ping He Hong lu Department of Radiology Affiliated Haikou Hospital of Xiangya School of Medicine Central South University (Department of Radiology Haikou Municipal People’s Hospital)

Aquaporin-4 regulates water molecule channels and is important in tissue regulation and water transportation in the brain. Upregulation of aquaporin-4 expression is closely related to cellular edema after early cerebral infarction. Cellular edema and aquaporin-4 expression can be determined by measuring cerebral infarct area and apparent diffusion coefficient using diffusion-weighted imaging（DWI）. We examined the effects of silencing aquaporin-4 on cerebral infarction. Rat models of cerebral infarction were established by occlusion of the right middle cerebral artery and si RNA-aquaporin-4 was immediately injected via the right basal ganglia. In control animals, the area of high signal intensity and relative apparent diffusion coefficient value on T2-weighted imaging（T2WI） and DWI gradually increased within 0.5–6 hours after cerebral infarction. After aquaporin-4 gene silencing, the area of high signal intensity on T2 WI and DWI reduced, relative apparent diffusion coefficient value was increased, and cellular edema was obviously alleviated. At 6 hours after cerebral infarction, the apparent diffusion coefficient value was similar between treatment and model groups, but angioedema was still obvious in the treatment group. These results indicate that aquaporin-4 gene silencing can effectively relieve cellular edema after early cerebral infarction; and when conducted accurately and on time, the diffusion coefficient value and the area of high signal intensity on T2 WI and DWI can reflect therapeutic effects of aquaporin-4 gene silencing on cellular edema.

关键词： nerve regeneration middle cerebral artery occlusion cerebral ischemia cytotoxic edema angioedema magnetic resonance imaging diffusion-weighted imaging aquaporin-4 gene silencing

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Confined nanospace pyrolysis: A versatile strategy to create hollow structured porous carbons

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Nano Research 2021年第9期14卷 3159-3173页

作者： Rui-ping Zhang Wen-Cui Li Guang-ping Hao An-Hui lu State Key Laboratory of Fine Chemicals School of Chemical EngineeringDalian University of TechnologyDalian 116024China

Confined nanospace pyrolysis(CNP)has attracted increasing attention as a general strategy to prepare task-specific hollow structured porous carbons(HSPCs)in the past *** unique advantages of the CNP strategy include its outstanding ability in control of the monodispersity,porosity and internal cavity of *** a consequence,the obtained HSPCs perform exceptionally well in applications where a high dispersibility and tailored cavity are particularly required,such as drug delivery,energy storage,catalysis and so *** this review,the fundamentals of the CNP strategy and its advances in structural alternation is first summarized,then typical applications are discussed by exemplifying specific synthesis *** addition,this review offers insights into future developments for advanced task-specific hollow structured porous materials prepared by the CNP strategy.

关键词： confined nanospace pyrolysis hollow structures carbon materials core-shell structures dispersibility

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Effect of work hardening discrepancy on strengthening of laminated Cu/CuZn alloys

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Journal of Materials Science & Technology 2022年第8期103卷 67-72页

作者： Zheng cao Zhao Cheng Wei Xu Lei lu Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China The State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China

To clarify the work hardening discrepancy effect on the strengthening of laminated metals,we designed two laminated Cu/Cu4Zn and Cu/Cu32Zn samples with different layer ***/Cu4Zn has larger work hardening discrepancy between two constituent layers relative to Cu/Cu32Zn,but the yield strengths of two Cu Zn constituents are *** tensile results suggest Cu/Cu4Zn with larger work hardening discrepancy exhibits a significant strengthening at early deformation stage while Cu/Cu32Zn possesses a better *** underlying mechanisms for the strengthening effect are attributed to more geometrically necessary dislocations accumulated at interfaces and severer strain localization due to the larger work hardening discrepancy.

关键词： Laminated Cu/Cu alloys Work hardening Strengthening Interfacial affected zone Strain localization

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Efficient Inverse Method for Structural Identification Considering Modeling and Response Uncertainties

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Chinese Journal of Mechanical Engineering 2022年第5期35卷 150-161页

作者： Lixiong cao Jie Liu Cheng lu Wei Wang State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle EngineeringHunan UniversityChangsha 410082China

The inverse problem analysis method provides an effective way for the structural parameter ***,uncertainties wildly exist in the practical engineering inverse *** to the coupling of multi-source uncertainties in the measured responses and the modeling parameters,the traditional inverse method under the deterministic framework faces the challenges in solving mechanism and computing *** this paper,an uncertain inverse method based on convex model and dimension reduction decomposition is proposed to realize the interval identification of unknown structural parameters according to the uncertain measured responses and modeling ***,the polygonal convex set model is established to quantify the epistemic uncertainties of modeling ***,a space collocation method based on dimension reduction decomposition is proposed to transform the inverse problem considering multi-source uncertainties into a few interval inverse problems considering response *** transformed interval inverse problem involves the two-layer solving process including interval propagation and optimization *** order to solve the interval inverse problems considering response uncertainty,an efficient interval inverse method based on the high dimensional model representation and affine algorithm is further *** the coupling of the above two strategies,the proposed uncertain inverse method avoids the time-consuming multi-layer nested calculation procedure,and then effectively realizes the uncertainty identification of unknown structural ***,two engineering examples are provided to verify the effectiveness of the proposed uncertain inverse method.

关键词： Inverse problem Uncertainty quantification Dimension reduction decomposition Polygonal convex set Affine algorithm

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Activity of Stress-related Antioxidative Enzymes in the Invasive Plant Crofton Weed(Eupatorium adenophorum)

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Journal of Integrative Plant Biology 2007年第11期49卷 1555-1564页

作者： ping lu Wei-Guo Sang Ke-ping Ma Key Laboratory of Vegetation Ecology and Environment Change Institute of Botany the Chinese Academy of Sciences Beijing 100093 China Resources and Environmental Sciences College Northeast Agrfcultural University Harbin 150030 China

Crofton weed is an invasive weed in southwestern China. The activities of several antioxidative enzymes involved in plant protection against oxidative stress were assayed to determine physiological aspects of the crofton weed that might render the plant vulnerable to environmental stress. Stresses imposed on crofton weed were heat （progressively increasing temperatures： 25 ℃, 30 ℃, 35 ℃, 38℃ and 42 ℃ at 24 h intervals）, cold （progressively decreasing temperatures： 25 ℃, 20 ℃, 15℃, 10 ℃ and 5℃ at 24h intervals）, and drought （without watering up to 4days）. The three stresses induced oxidative damage as evidenced by an increase in lipid peroxidation. The effect varied with the stress imposed and the length of exposure. The activity of superoxide dismutase （SOD） increased in response to all stresses but was not significantly different from the controls （P 〈 0.05） when exposed to cold stress. Catalase （CAT） activity decreased in response to heat and drought stress but increased when exposed to cold conditions. Guaiacol peroxidase （POD） and glutathione reductase （GR） activities increased in response to cold and drought but decreased in response to heat stress. The activity of ascorbata peroxidase （APX） responded differently to all three stresses. Monodehydroascorbate reductase （MDHAR） activity decreased in response to heat and drought, and slightly increased in response to the cold stress but was not significantly different from the controls （P 〈 0.05）. The activity of dehydroascorbata reductase （DHAR） increased in response to all three stresses. Taken together, the co-ordinate increase of the oxygen-detoxifying enzymes might be more effective to protect crofton weed from the accumulation of oxygen radicals at low temperatures rather than at high temperatures.

关键词： antioxidative enzymes crofton weed invasive plant stress.

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Epidemiological characteristics of human prion diseases

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Infectious Diseases of Poverty 2016年第1期5卷 394-403页

作者： cao Chen Xiao-ping Dong State Key Laboratory for Infectious Disease Prevention and Control National Institute for Viral Disease Control and PreventionChinese Center for Disease Control and PreventionChangbai Rd 155Beijing 102206China Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases Zhejiang UniversityHangzhou 310003China Chinese Academy of Sciences Key Laboratory of Pathogenic Microbiology and Immunology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China

Human prion diseases are a group of transmissible,progressive,and invariably fatal neurodegenerative disorders,which include Kuru,Creutzfeldt-Jakob disease(CJD),Gerstmann-Sträussler-Scheinker syndrome,and fatal familial *** prion diseases affect approximately 1–2 persons per million worldwide annually,occurring in sporadic,inherited,and acquired *** diseases have attracted both scientific and public attention not only because of their mysterious pathogen,but also due to their considerable threat to public health since the emergence of the variant *** are still no specific therapeutic and prophylactic interventions available for prion diseases,thus active surveillance of human prion diseases is critical for disease control and *** 1993,CJD surveillance systems have been established in many countries and regions,and several long-term multinational cooperative projects have been *** this paper,the epidemiological characteristics of various human prion diseases and the active surveillance systems pertaining to them in different countries and regions are summarized and reviewed.

关键词： Prion disease Epidemiology Creutzfeldt-Jakob disease Surveillance

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