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17篇 您的检索式:作者名="Han Dejun"
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1Wheat stripe rust resistance gene Yr24/Yr26:A retrospective review显示文摘The objective of this review is to describe events in China and elsewhere that are related to the discovery, genetic identification, use, and ultimate break-down of a single wheat gene for resistance to stripe rust, namely Yr24/Yr26. In our retrospective analysis there was an early assumption of at least three genes at or near the locus, which caused an erroneous presumption of genetic diversity for resistance. It is an example of another boom and bust cycle in plant breeding with races virulent to Yr26(V26 races) now being the majority race group in the Chinese Pst population. We have attempted to present our story in a historical and personal context demonstrating research inputs from different national and international groups, as well as some significant contemporary side issues. It covers the period from the late 1980 s to 2017, during which significant rapid advances in the molecular biology of host: pathogen genetics occurred. We attempt to describe both successes and drawbacks in our work.Robert McIntosh Jingmei Mu Dejun Han Zhensheng Kang 2018The Crop Journal2018,6,4:13
2WHEAT STRIPE RUST AND INTEGRATION OF SUSTAINABLE CONTROL STRATEGIES IN CHINA显示文摘Stripe (yellow) rust caused by Puccinia striiformis f. sp. tritici occurs in almost allwheat-producing regions of the world. Severe countrywide epidemics in Chinahave caused substantial yield losses. Growing resistant cultivars is the beststrategy to control this disease but the pathogen can overcome resistance inwheat cultivars. The high variation in the virulence of the pathogen combinedwith the large areas of susceptible wheat cultivars enables the pathogenpopulation to increase rapidly and disperse over long distances under favorableenvironmental conditions, resulting in severe pandemics within croppingseasons. Current stripe rust control measures are based on many years ofresearch including the underlying epidemiology regarding year-to-year survivalof the pathogen, pathways of pathogen dispersal within seasons and years, therole of P. striiformis sexual hybridization, the use of resistance sources inbreeding programs, and year-round surveillance of national wheat crops that arepresent in different parts of the country throughout the year. All these strategiesdepend on accurate prediction of epidemics, more precise use of fungicides tomeet national requirements and better deployment of resistance genes. Newideas with potential application in sustainable protection of stripe rust includenegative regulatory gene editing, resistance gene overexpression and biologicalcontrol based on microbiomes.Qingdong ZENG Jie ZHAO Jianhui WU Gangming ZHAN Dejun HAN Zhensheng KANG 2022Frontiers of Agricultural Science and Engineering2022,9,1:5
3Haplotype variations in QTL for salt tolerance in Chinese wheat accessions identified by marker-based and pedigree-based kinship analyses显示文摘Most modern wheat cultivars were selected on the basis of yield-related indices measured under optimal fertilizer and irrigation inputs.With climate change,land degradation and salinity caused by sea water encroachment,wheat is increasingly subjected to environmental stress.Moreover,expanding urbanization increasingly encroaches upon prime agricultural land in countries like China,and alternative cropping areas must be found.Some of these areas have moderate constraining factors,such as salinity.Therefore,it is important to investigate whether current genetic materials and breeding procedures are maintaining adequate variability to address future problems caused by abiotic stress.In this study,a panel of 307 wheat accessions,including local landraces,exotic cultivars used in Chinese breeding programs and Chinese cultivars released during different periods since1940,were subjected to a genome-wide association study to dissect the genetic basis of salinity tolerance.Both marker-based and pedigree-based kinship analyses revealed that favorable haplotypes were introduced in some exotic cultivars as well as a limited number of Chinese landraces from the 1940 s.However,improvements in salinity tolerance during modern breeding are not as obvious as that of yield.To broaden genetic diversity for increasing salt tolerance,there is a need to refocus attention on local landraces that have high degrees of salinity tolerance and carry rare favorable alleles that have not been exploited in breeding.Shizhou Yu Jianhui Wu Meng Wang Weiming Shi Guangmin Xia Jizeng Jia Zhensheng Kang Dejun Han 2020The Crop Journal2020,8,6:4
4SNP-based linkage mapping for validation of adult plant stripe rust resistance QTL in common wheat cultivar Chakwal 86显示文摘Wheat crops in China are constantly challenged by stripe rust. Deployment of cultivars with diverse resistances is the best strategy to control the disease. A recombinant inbred line(RIL) population derived from a cross between the resistant cultivar Chakwal 86 and susceptible landrace Mingxian 169 was studied in multiple environments to examine the underlying genetics and to identify quantitative trait loci(QTL) for stripe rust resistance.One hundred and twenty-eight RILs were genotyped with wheat 35 K SNP array and a genome-wide linkage map with 1480 polymorphic SNP markers, or bins, was constructed.Two major QTL on chromosomes 1BL and 3BS, and one minor QTL on 6BS had significant effects in reducing stripe rust severity. The QTL were validated using composite interval mapping(CIM) and inclusive composite interval mapping(ICIM). These methods explained59.0%–74.1% of the phenotype variation in disease response. The QTL on chromosome 1 BL was confirmed to be Yr29/Lr46 and the one on 3BS was the resistance allele identified in CIMMYT germplasm but was not Yr30/Sr2. The QTL on 6BS probably corresponded to previously known QTL. RILs with combined QTL were more resistant than those with single or no QTL. Kompetitive allele-specific PCR(KASP) assays for the QTL with largest effect QTL on chromosome 3BS were performed on a subset of RILs and 150 unrelated wheat lines. The QTL on 3BS with its linked KASP markers can be used in marker-assisted selection to improve stripe rust resistance in breeding programs.Qingdong Zeng Jianhui Wu Shuo Huang Fengping Yuan Shengjie Liu Qilin Wang Jingmei Mu Shizhou Yu Li Chen Dejun Han Zhensheng Kang 2019The Crop Journal2019,7,2:2
5Stripe rust resistance and genes in Chinese wheat cultivars and breeding lines显示文摘Zeng Qingdong Han Dejun Wang Qilin 2014Euphyti- ca2014,1962,:1
6SSR and STS markers for wheat stripe rust resistance gene Yr26显示文摘Wang Chunmei Zhang Yiping Han Dejun 2007Euphytica2007,,:1
7A Si+ structure in semi-insulating GaAs substrate by high energy implantation显示文摘Han Dejun Chan K T Li Guohui 1995NIM1995,100,:1
8Reduction of the leakage current of radiation detectors by a simple cap implantation显示文摘Han Dejun Wang Chuanmin Wang Guangfu 2002Nuclear Instruments and Methods in Physics Research B2002,195,:1
9Expression Profiles of 10,422 Genes at Early Stage of Low Nitrogen Stress in Rice Assayed using a cDNA Microarray显示文摘Xingming Lian Shiping Wang Jianwei Zhang Qi Feng Lida Zhang Danlin Fan Xianghua Li Dejun Yuan Bin Han Qifa Zhang 2006Plant Molecular Biology2006,,5:1
10A new method for classification of woven structure for yarn-dyed fabric显示文摘ZHENG Dejun HAN Yu HU Jinlian 2014Textile Research Journal2014,84,1:1
11High temperature induced masculinization of zebrafish by down-regulation of sox9b and esr1 via DNA methylation显示文摘Elevated temperature could influence the sex differentiation by altering the expression of sex-related genes in fish.However, the underlying mechanisms by which the gene expression is altered remain poorly understood.Here, we aimed to explore the role of DNA methylation in sex differentiation of zebrafish(Danio rerio) in response to elevated temperature.The results showed that high temperature(33℃) exposure of fish from 20 to 30 days post fertilization(dpf), compared to normal temperature(28℃), resulted in male-biased sex ratio and decreased expression of female-related genes including cyp19a1a, sox9b and esr1.Meanwhile, the expressions of DNA methyltransferases dnmt3a1 and dnmt3a2, and the DNA methylation levels in sox9b and esr1 promoter were significantly increased by high temperature, strongly implying that DNA methylation is involved in high temperature-induced masculinization of zebrafish.Co-treatment with 5-aza-2-deoxycytidine(a DNA methylation inhibitor) attenuated the high temperature-induced masculinizing effect, recovered the expression of esr1 and sox9b, suppressed the transcription of dnmt3a1 and dnmt3a2, and decreased the methylation of esr1 and sox9b promoter, further confirming that DNA methylation plays an important role in high temperature-induced masculinization of zebrafish.Furthermore, the methylation of sox9b promoter decreased the enrichment of transcription factor CREB(cAMP-responsive element binding proteins).Overall, these findings suggest that high temperature induce masculinization of zebrafish by down-regulation of femalerelated genes via DNA methylation, providing a new insight in understanding the epigenetic mechanism of thermal-mediated sex differentiation in fish.Jiangyuan Han Yan Hu Yongmei Qi Cong Yuan Sajid Naeem Dejun Huang 2021Journal of Environmental Sciences2021,33,9:1
12SSR and STS markers for wheat stripe rust resistance gene Yr26显示文摘Chunmei Wang Yiping Zhang Dejun Han 2008Euphytica2008,159,:1
13Biological traits and life history of Pagiophloeus tsushimanus(Coleoptera:Curculionidae),a weevil pest on camphor trees in China显示文摘Cinnamomum camphora(L.)J.Presl.(Laurales:Lauraceae)is widely cultivated as an important landscape tree species in many urban areas in South China,especially in Shanghai City.Pagiophloeus tsushimanus Morimoto has become a destructive insect pest of C.camphora plantations in Shanghai,but the biological and ecological traits of this pest remain largely unknown.In this study,we investigated the damage and life history and determined the larval instar of P.tsushimanus.The results indicated that P.tsushimanus is a monophagous weevil pest,and C.camphora is the unique host tree species.C.camphora plantations in all administrative districts of Shanghai have been seriously damaged by P.tsushimanus.Adults often aggregate for feeding on the tender bark of twigs and occasionally on newly emerged buds.After experiencing damage,the twigs shrink and crack and the buds will shrink.Adults tend to repeatedly mate and oviposit,and all females lay single eggs at a time.Eggs will be covered with a mixture of secretions and wood chips by female adults.Larvae(1 st-2 nd instar)feed on the phloem,while 3 rd-5 th instar can bore into the phloem and the cambium.Massive tunnels,including three shapes(inverted'L',inverted'T',and inverted'Z'),were observed in the trunk of each tree,and resulted in swelling of the outer bark.P.tsushimanus has one life cycle per year in Shanghai.Both adults and larvae(3 rd-5 th instar)overwinter from early November to early April.Adults overwinter in grooves on the underside of branches or at branch nodes,and larvae overwinter in tunnels.Five larval instars of P.tsushimanus were determined according to Dyar’s and Crosby’s rules.The biological traits and life history of P.tsushimanus have been identified and can provide guidance in terms of pest control and plantation management.Cong Chen Congcong Zhang Shouyin Li Han Zhu Binqi Fan Yan Wang Peng Su Yangyang Han Dejun Hao 2021Journal of Forestry Research2021,32,5:0
14Effect of Annealing Temperature on CrN Microspheres Synthesized by CAP Technology显示文摘CrN microspheres were synthesized by using a cathodic arc plasma source system. The obtained samples were annealed in air at temperatures of 300-800 ℃ for 60 min. The influence of annealing temperature on the microstructure and surface morphology of the CrN microspheres was investigated. The CrN microspheres were characterized by means of scanning electron microscopy, transmission electron microscopy and X-ray diffraction analysis. The results show that the CrN nanoparticles arranged into leaf-like structures before annealing. With the rising of the annealing temperature, the size of CrN crystal nanoparticals became larger. When the annealing temperature exceeded the oxidation point(500 ℃), the CrN was oxidized and the leaf-like structure was broken. With further increase of the annealing temperature(700 ℃), the arrangement of CrN nanoparticles was changed from leaf-like structure to be discrete.TIAN Canxin YAN Shaojian HAN Bin FU Dejun 2014Wuhan University Journal of Natural Sciences2014,19,6:0
15Visual-Based Character Embedding via Principal Component Analysis显示文摘Linchao He Dejun Zhang Long Tian Fei Han Mengting Luo Yilin Chen Yiqi Wu 2018国际计算机前沿大会会议论文集2018,,1:0
16Context-Aware Network Embedding via Variation Autoencoders for Link Prediction显示文摘Long Tian Dejun Zhang Fei Han Mingbo Hong Xiang Huang Yilin Chen Yiqi Wu 2018国际计算机前沿大会会议论文集2018,,1:0
17Combined linkage and association mapping reveals two major QTL for stripe rust adult plant resistance in Shaanmai 155 and their haplotype variation in common wheat germplasm显示文摘The development and deployment of diverse resistance sources in new wheat cultivars underpin the durable control of stripe rust.In the present study,two loci for adult plant resistance(APR),QYr SM155.1 and QYr SM155.2,were identified in the Chinese wheat breeding line Shaanmai 155.QYr SM155.1 was mapped to a 3.0-c M interval between the single-nucleotide polymorphism(SNP)markers AX-109583610 and AX-110907562 on chromosome arm 2 BL.QYr SM155.2 was mapped to a 2.1-c M interval flanked by the SNP markers AX-110378556 and AX-86173526 on chromosome arm 7 AS.A genome-wide association study was used to identify markers associated with APR in a panel of 411 spring wheat lines.Thirteen and 11 SNPs were significantly associated with QYr SM155.1 and QYr SM155.2,respectively,corresponding to physical intervals of 653.75–655.52 Mb on 2 BL and 81.63–83.93 Mb on7 AS.To characterize the haplotype variation and the distribution of these QTL,haplotype analysis was performed based on these SNPs in an independent panel of 1101 worldwide wheat accessions.Three major haplotypes(2 B_h1,2 B_h2,and 2 B_h3)for QYr SM155.1 and four major haplotypes(7 A_h1,7 A_h2,7 A_h3,and 7 A_h4)for QYr SM155.2 were identified.Accessions individually harboring QYr SM155.1_h1 and QYr SM155.2_h1 haplotypes and their combination displayed resistance.Additional assays of 1306 current Chinese cultivars and breeding lines using markers flanking QYr SM155.1 and QYr SM155.2 indicated that the resistance haplotypes of the two QTL were present in respectively 1.45%and 14.16%of lines.Increasing resistance haplotype frequencies at these two loci using marker-assisted selection should benefit wheat production in China.Cai’e Zhou Dan Liu Xu Zhang Qimeng Wu Shengjie Liu Qingdong Zeng Qilin Wang Changfa Wang Chunlian Li Ravi PSingh Sridhar Bhavani Zhensheng Kang Dejun Han Weijun Zheng Jianhui Wu 2022The Crop Journal2022,10,3:0
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