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32篇 您的检索式:作者名="QIN PengCheng"
    题名 作者 年代 出处 被引量
1Rapid improvement of grain weight via highly efficient CRISPR/Cas9-mediated multiplex genome editing in rice显示文摘Most of the important agronomic traits in crop plants,such as yield,quality and stress response,are quantitative and jointly controlled by many genomic loci or major genes.Improving these complex traits depends on the combination of beneficial alleles at the quantitative trait loci(QTLs).However,the conventional cross breeding method is extremely time-consuming and laborious for pyramiding multiple QTLs.In certain cases,this approachRongfang Xu Yachun Yang Ruiying Qin Hao Li Chunhong Qiu Li Li Pengcheng Wei Jianbo Yang 2016Journal of Genetics and Genomics2016,43,8:47
2Uncertainties in assessing the effect of climate change on agriculture using model simulation and uncertainty processing methods显示文摘Model simulation is an important way to study the effects of climate change on agriculture.Such assessment is subject to a range of uncertainties because of either incomplete knowledge or model technical uncertainties,impeding effective decision-making to climate change.On the basis of uncertainties in the impact assessment at different levels,this article systematically summarizes the sources and propagation of uncertainty in the assessment of the effect of climate change on agriculture in terms of the climate projection,the assessment process,and the crop models linking to climate models.Meanwhile,techniques and methods focusing on different levels and sources of uncertainty and uncertainty propagation are introduced,and shortcomings and insufficiencies in uncertainty processing are pointed out.Finally,in terms of how to accurately assess the effect of climate change on agriculture,improvements to further decrease potential uncertainty are suggested.YAO FengMei QIN PengCheng ZHANG JiaHua LIN ErDa BOKEN Vijendra 2011Chinese Science Bulletin2011,56,8:21
3Transforming bacterial disease surveillance and investigation using whole-genome sequence to probe the trace显示文摘二十年后来过去了第一细菌的整个染色体的定序,它为微生物引起的染色体提供新机会。因而,可观的基因差异由细菌的染色体编码了,在在一样的种类之中,种类被揭示了。在最近的年里,染色体定序技术和生物信息学很快发展了,它导致了转变并且为在传染疾病流行病的解剖使用的细菌的染色体比较帮助了策略和方法论的应用程序。细菌的整个染色体的定序并且生物信息的计算允许 genotyping 在疾病控制满足流行病学的学习的要求。在这评论,我们构画出意义并且总结细菌的染色体在细菌的疾病控制和预防的上下文定序的角色。我们讨论细菌的染色体在爆发察觉,跟踪的来源,传播模式发现,和新流行克隆定序的应用程序鉴定。染色体在传染疾病监视网络定序并且数据分享的宽应用程序将更加支持爆发察觉和早警告阻止细菌的疾病的传播。Biao Kan Haijian Zhou Pengcheng Du Wen Zhang Xin Lu Tian Qin Jianguo Xu 2018Frontiers of Medicine2018,12,1:11
4Development of Plant Prime-Editing Systems for Precise Genome Editing显示文摘Prime-editing systems have the capability to perform efficient and precise genome editing in human cells.In this study,we first developed a plant prime editor 2(pPE2)system and test its activity by generating a targeted mutation on an HPT^(-ATG) reporter in rice.Our results showed that the pPE2 system could induce programmable editing at different genome sites.In transgenic T0 plants,pPE2-generated mutants occurred with 0%–31.3%frequency,suggesting that the efficiency of pPE2 varied greatly at different genomic sites and with prime-editing guide RNAs of diverse structures.To optimize editing efficiency,guide RNAs were introduced into the pPE2 system following the PE3 and PE3b strategy in human cells.However,at the genomic sites tested in this study,pPE3 systems generated only comparable or even lower editing frequencies.Furthemore,we developed a surrogate pPE2 system by incorporating the HPT^(-ATG) reporter to enrich the prime-edited cells.The nucleotide editing was easily detected in the resistant calli transformed with the surrogate pPE2 system,presumably due to the enhanced screening efficiency of edited cells.Taken together,our results indicate that plant prime-editing systems we developed could provide versatile and flexible editing in rice genome.Rongfang Xu Juan Li Xiaoshuang Liu Tiaofeng Shan Ruiying Qin Pengcheng Wei 2020Plant Communications2020,1,3:10
5CRISPR/Cas9-Mediated Adenine Base Editing in Rice Genome显示文摘Precise base editing is highly desired in plant functional genomic research and crop molecular breeding. In this study, we constructed a rice-codon optimized adenine base editor(ABE)-nC as9 tool that induced targeted A·T to G·C point mutation of a key single nucleotide polymorphism site in an important agricultural gene. Combined with the modified single-guide RNA variant, our plant ABE tool can efficiently achieve adenine base editing in the rice genome.LI Hao QIN Ruiying LIU Xiaoshuang LIAO Shengxiang XU Rongfang YANG Jianbo WEI Pengcheng 2019Rice science2019,26,2:7
6Genome editing mediated by SpCas9 variants with broad non-canonical PAM compatibility in plants显示文摘Streptococcus pyogenes Cas9(SpCas9)is the most widely used genome editing tool in plants.The editing induced by SpCas9 strictly requires a canonical NGG protospacer-adjacent motif(PAM),significantly limiting its scope of application.Recently,five SpCas9 variants,SpCas9-NRRH,SpCas9-NRCH,SpCas9-NRTH,SpG,and SPRY,were developed to recognize non-canonical PAMs in human cells.In this study,these variants were engineered for plant genome editing,and their targeted mutagenesis capabilities were comprehensively examined at various canonical and non-canonical PAM sites in rice(Oryza sativa)by stable transformation.Moreover,both cytosine base editors using a rat APOBEC1 or a human APO-BEC3a and adenine base editors using a directly evolved highly compatible TadA*-8e deaminase were developed from these SpCas9 variants.Our results demonstrated that the developed SpCas9 variantsbased base editors readily generated conversions between C.G and T.A in the target sites with noncanonical PAMs in transgenic rice lines.Collectively,the toolbox developed in this study substantially expands the scope of SpCas9-mediated genome editing and will greatly facilitate gene disruption and precise editing in plants.Juan Li Rongfang Xu Ruiying Qin Xiaoshuang Liu Fanna Kong Pengcheng Wei 2021Molecular Plant2021,14,2:6
7Au-Ag alloy nanoparticles with tunable cavity for plasmon-enhanced photocatalytic H2 evolution显示文摘Au-Ag alloy nanoparticles with different cavity sizes have great potential for improving photocatalytic performance due to their tunable plasmon effect.In this study,galvanic replacement was combined with co-reduction with the reaction kinetics processes regulated to rapidly synthesize Au-Ag hollow alloy nanoparticles with tunable cavity sizes.The position of the localized surface plasmon resonance(LSPR)peak could be effectively adjusted between 490 nm and 713 nm by decreasing the cavity size of the Au-Ag hollow nanoparticles from 35 nm to 20 nm.The plasmon-enhanced photocatalytic H2 evolution of alloy nanoparticles with different cavity sizes was investigated.Compared with pure P25(TiO2),intact and thin-shelled Au-Ag hollow nanoparticles(HNPs)-supported photocatalyst exhibited an increase in the photocatalytic H2 evolution rate from 0.48μmol h^−1 to 4μmol h^−1 under full-spectrum irradiation.This improved photocatalytic performance was likely due to the plasmon-induced electromagnetic field effect,which caused strong photogenerated charge separation,rather than the generation of hot electrons.Xuanyu Yue Juan Hou Haifeng Zhao Pengcheng Wu Yali Guo Qin Shi Long Chen Shanglong Peng Zhiyong Liu Guozhong Cao 2020Journal of Energy Chemistry2020,29,10:4
8The histone methyltransferase EZH2 primes the early differentiation of follicular helper T cells during acute viral infection显示文摘Epigenetic modifications to histones dictate the differentiation of naïve CD4^(+) T cells into different subsets of effector T helper(TH)cells.The histone methyltransferase enhancer of zeste homolog 2(EZH2)has been implicated in the mechanism regulating the differentiation of TH1,TH2 and regulatory T(Treg)cells.However,whether and how EZH2 regulates follicular helper T(TFH)cell differentiation remain unknown.Using a mouse model of acute lymphocytic choriomeningitis virus(LCMV)infection,we observed abundant EZH2 expression and associated H3K27me3 modifications preferentially in the early committed virus-specific TFH cells compared to those in TH1 cells.Ablation of EZH2 in LCMV-specific CD4^(+) T cells leads to a selective impairment of early TFH cell fate commitment,but not late TFH differentiation or memory TFH maintenance.Mechanistically,EZH2 specifically stabilizes the chromatin accessibility of a cluster of genes that are important for TFH fate commitment,particularly B cell lymphoma 6(Bcl6),and thus directs TFH cell commitment.Therefore,we identified the chromatin-modifying enzyme EZH2 as a novel regulator of early TFH differentiation during acute viral infection.Xiangyu Chen Guoshuai Cao Jialin Wu Xinxin Wang Zhiwei Pan Jianbao Gao Qin Tian Lifan Xu Zhirong Li Yaxing Hao Qizhao Huang Pengcheng Wang Minglu Xiao Luoyingzi Xie Shupei Tang Zhenyu Liu Li Hu Jianfang Tang Ran He Li Wang Xinyuan Zhou Yuzhang Wu Mengjie Chen Beicheng Sun Bo Zhu Jun Huang Lilin Ye 2020Cellular & Molecular Immunology2020,17,3:4
9Development of an efficient plant dual cytosine and adenine editor显示文摘An enhanced CDA-like(eCDAL)was established from Japanese lamprey CDA1-like 4 to achieve a high editing frequency in a broad region as a C-terminal cytosine base editors(CT-CBE).Then,a novel plant dual-base editor version1(pDuBE1)was developed by integrating TadA-8e into eCDAL.The editing efficiency of pDuBE1 could reach to 87.6%,with frequencies of concurrent A-to-G and C-to-T conversions as high as 49.7%in stably transformed plant cells.Our results showed that pDuBE1 could mediate robust dual editing in plant genome,providing a powerful manipulation tool for precise crop breeding and screening platforms for in planta direct evolution.Rongfang Xu Fanna Kong Ruiying Qin Juan Li Xiaoshuang Liu Pengcheng Wei 2021Journal of Integrative Plant Biology2021,63,9:4
10Increasing fidelity and efficiency by modifying cytidine base-editing systems in rice显示文摘The efficiency of plant cytidine base-editing systems is limited, and unwanted mutations frequently occur in transgenic plants. We increased the cytidine editing frequency and fidelity of the plant base editor 3(BE3) and targeted activation-induced cytidine deaminase(CDA)(target-AID) systems by coexpressing three copies of free uracil–DNA glycosylase(UDG) inhibitor(UGI). The editing efficiency of the improved BE3 and CDA systems reached as high as 88.9% and 85.7%, respectively, in regenerated rice plants, with a very low frequency of unwanted mutations. The low editing frequency of the BE3 system in the GC context could be overcome by the modified CDA system. These results provide a highfidelity and high-efficiency solution for rice genomic base editing.Ruiying Qin Shengxiang Liao Juan Li Hao Li Xiaoshuang Liu Jianbo Yang Pengcheng Wei 2020The Crop Journal2020,8,3:3
11含高钙和维生素D的强化奶能有效提高健康的绝经后的中国女性体内的维生素D水平并减少骨吸收显示文摘目的钙摄入水平低以及体内维生素D不足是导致亚洲女性罹患骨质疏松的危险因素。此项研究的目的是评估高钙维生素D强化牛奶(HCM)对健康的中国绝经后妇女的体内维生素D状态和骨吸收标志物进行干预的影响。方法本试验对象为55岁以上,绝经至少5年的女性。共有124名女性进行了总体健康状况和骨密度检查筛选。63名女性被随机分为对照组和试验组,试验组在12w内每日饮用两次高钙/维生素D强化奶(含900 mg钙、96 mg镁、2.4 mg锌和6.4μg维生素D)。2组分别在试验开始、试验2 w、8 w和12 w时测量血矿物质、25(OH)维生素D3和Ⅰ型胶原C端肽(CTX)水平。结果对照组女性平均年龄为63±4.6岁,高钙强化奶(HCM)组女性平均年龄为62±3.8岁。所测得的每日钙摄入量的基线值为HCM组260~482 mg,对照组为252~692 mg。12 w后HCM组的平均身体质量指数(BMI)显著降低(P<0.05)。HCM组的血25(OH)维生素D3水平显著提高(33.13~39.49 nmol/L),而对照组则维持不变(29.27~28.21 nmol/L)。HCM组的血CTX水平在0 w和2 w之间下降了25%,并保持不变直至第12w。从第2w开始HCM组和对照组相比血CTX水平就出现了显著差异(P<0.001)。结论通过饮用含高钙和维生素D的强化奶(HCM),在2至4w内能显著提高中国绝经妇女体内维生素D水平,并减少骨吸收破坏。如果长期持续地饮用含高钙和维生素D的强化奶(HCM),能减少骨吸收和骨量丢失的风险,从而减少患骨质疏松和由此引起骨折的风险。Marlena C Kruger PengCheng Ha Joanne M Todd Barbara Kuhn-Sherlock Linda M Schollum Jiliang Ma George Qin Edith Lau 2013中国骨质疏松杂志2013,19,2:2
12A reactive oxygen species burst causes haploid induction in maize显示文摘Haploid induction (HI) is an important tool in crop breeding. Phospholipase A1 (ZmPLA1)/NOT LIKE DAD (NLD)/MATRILINEAL (MTL) is a key gene controlling HI in maize;however, the underlying molecular mechanism remains unclear. In this study, to dissect why loss of ZmPLA1 function could mediate HI we performed a comprehensive multiple omics analysis of zmpla1 mutant anthers by integrating transcriptome, metabolome, quantitative proteome, and protein modification data. Functional classes of significantly enriched or differentially abundant molecular entities were found to be associated with the oxidative stress response, suggesting that a reactive oxygen species (ROS) burst plays a critical role in HI. In support of this, we further discovered that a simple chemical treatment of pollen with ROS reagents could lead to HI. Moreover, we identified ZmPOD65, which encodes a sperm-specific peroxidase, as a new gene controlling HI. Taken together, our study revealed a likely mechanism of HI, discovered a new gene controlling HI, and created a new method for HI in maize, indicating the importance of ROS balance in maintaining normal reproduction and providing a potential route to accelerate crop breeding.Chenglin Jiang Ju Sun Rui Li Shijuan Yan Wei Chen Liang Guo Guochen Qin Pengcheng Wang Cheng Luo Wenjie Huang Qinghua Zhang Alisdair R.Fernie David Jackson Xiang Li Jianbing Yan 2022Molecular Plant2022,15,6:2
13Effect of polysaccharide from Enteromorpha prolifera on maize seedlings under NaCl stress显示文摘In this study, a polysaccharide from Enteromorpha prolifera (EP) was extracted and its effect on maize seedlings under NaCl stress was investigated. Firstly, the components and structure of the EP were determined. We found that EP is a sulfated polysaccharide of high-molecular weight (Mw, 1 840 KDa) heteropolysaccharides and the main monosaccharide is rhamnose. The polysaccharide was applied to explore its effect on the growth of maize seedlings and its defense response under a salt stress. The results show that EP could promote the growth of maize seedlings under the salt stress. In addition, EP was shown able to significantly regulate membrane permeability and adjustment of osmotic substances such as soluble protein, soluble sugar, and proline, antioxidant enzymes containing superoxide dismutase, catalase, peroxidase, and ascorbate peroxidase. Therefore, EP is an effective salt-resistant substance for the growth of maize seedlings under NaCl stress.LIU Song LI Bing CHEN Xiaolin QIN Yukun LI Pengcheng 2019Journal of Oceanology and Limnology2019,37,4:2
14Alkali desilicated coal fly ash as substitute of bauxite in lime - soda sintering process for aluminum production 显示文摘BaiGuanghui Teng Wei Wang Xianggang Qin Jinguo XuPeng Li Pengcheng 2010Transactions of Nonferrous Metals Society of China2010,20,:1
15Alkaidesilicated coal fly ash as substitute of bauxite in lime - sode sintering process for aluminum production 显示文摘Bai Guanghui Teng Wei Wang Xianggang Qin Jinguo XuPeng Li Pengcheng 2010Transactions of Nonferrous Metals Society of China2010,20,:1
16Higher branched-chain amino acid intake is associated with a lower preva- lence of being overweight or obese in middle-aged East Asian and Western adults 显示文摘Qin Liqiang Xun Pengcheng Bujnowski D 2011J Nutr2011,141,2:1
17Optical Amplification at 1525 nm in BaYF5: 20% Yb3+, 2% Er3+ Nanocrystals Doped SU-8 Polymer Waveguide显示文摘Pengcheng Zhao Meiling Zhang Tianjiao Wang Xinyang Liu Xuesong Zhai Guanshi Qin Weiping Qin Fei Wang Daming Zhang Tong Zhang 2014Journal of Nanomaterials2014,,:1
18Development of a Geometry-Coupled Visual Analysis System {or MCNP 显示文摘Pengcheng Long Qin Zeng Tao He 2011Progress in Nuclear Science and Technology2011,2,:1
19Preparation,characterization,and antifungal evaluation of a new type of aminourea chitooligosaccharide derivatives显示文摘Phytopathogenic fungi cause heavy negative impact on the agricultural economy,but most existing fungicides are toxic and pose a threat to both human health and environments.A green and efficient fungicide is urgently needed.Chitooligosaccharides(COSs),the degradation products of natural polysaccharide chitosan,are nontoxic and biodegradable antifungal substances.In this study,a novel type of aminourea chitooligosaccharide derivatives(AUCOS)was synthesized by successively grafting a hydrazine group and an amine-carbonyl group onto a chitooligosaccharide backbone to enhance the antifungal capability of COSs.The structures of the target compounds were identified by FTIR,1H NMR,and 13C NMR,and the degree of substitution of each product was calculated from the results of the elemental analysis.The antifungal activities of the prepared chitooligosaccharide derivatives against Fusarium solani,Verticillium albo-atrum and Phytophthora capsici were tested in vitro.The AUCOSs had better inhibitory efficiencies against the three plant pathogen fungi than that of chitooligosaccharide,of which aminourea chitooligosaccharide 2(AUCOS2)was the most promising antifungal compound,whose highest inhibition rates were 60.12%,82.95%,and 85.23%against F.solani,V.albo-atrum and P.capsici,respectively.The synthesized derivatives have good application prospects in crop protection and deserve further research.ZHU Jun LIU Song QIN Yukun XING Rong’e YU Huahua CHEN Xiaolin LI Pengcheng 2020Journal of Oceanology and Limnology2020,38,3:1
20Prime editing-mediated precise knockin of protein tag sequences in the rice genome显示文摘Dear Editor,Accurately labeling proteins in living plant cells has long been a challenge and can be addressed by targeted insertion of tag sequences in a given locus.Recent optimized plant prime editors(PEs)enable efficient programmable installation of small insertions or deletions,including insertions of short sequences(Li et al.,2022a,2022b;Jiang et al.,2022;Xu et al.,2022;Zong et al.,2022;Zou et al.,2022).To investigate whether prime editing can be used to tag endogenous proteins in rice,we made use of the enpPE2 system described in our previous report(Li et al.,2022b).Juan Li Jian Ding Jingyan Zhu Rongfang Xu Dongfang Gu Xiaoshuang Liu Jing Liang Chunhong Qiu Huanhuan Wang Min Li Ruiying Qin Pengcheng Wei 2023Plant Communications2023,4,3:1
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