检索结果-南通市图书馆

Identification of Quantitative Trait Loci for Lipid Metabolism in Rice Seeds

Molecular Plant 2012年第4期5卷 865-875页

作者： jie-zheng ying Jun-Xiang Shan Ji-Ping Gao Mei-Zhen Zhu Min Shi Hong-Xuan Lin National Key Laboratory of Plant Molecular Genetics and National Center for Plant Gene Research(Shanghai) Shanghai Institute of Plant Physiology and EcologyShanghai Institutes for Biological SciencesThe Chinese Academy of SciencesGraduate School of the Chinese Academy of Sciences300 Fenglin RoadShanghai 200032China National Key Laboratory of Rice Biology China National Rice Research InstituteHangzhou 310006China

Plant seed oil is important for human dietary consumption and industrial application. The oil trait is controlled by quantitative trait loci （QTLs）, but no QTLs for fatty acid composition are known in rice, the monocot model plant. QTL analysis was performed using F2 and F2：3 progeny from a cross of an indica variety and a japonica variety. Gas chroma- tography-mass spectrometry （GC-MS） analysis revealed significant differences between parental lines in fatty acid com- position of brown rice oil, and 29 associated QTLs in F2 and/or F2：3 populations were identified throughout the rice genome, except chromosomes 9 and 10. Eight QTLs were repeatedly identified in both populations across different envi- ronments. Five loci pleiotropically controlled different traits, contributing to complex interactions of oil with fatty acids and between fatty acids. Nine rice orthologs of Arabidopsis genes encoding key enzymes in lipid metabolism co-localized with 11 mapped QTLs. A strong QTL for oleic （18：1） and linoleic （18：2） acid were associated with a rice ortholog of a gene encoding acyI-CoA：diacylglycerol acyltransferase （DGAT）, and another for palmitic acid （16：0） mapped similarly to the acyl- ACP thioesterase （FatB） gene ortholog. Our approach rapidly and efficiently identified candidate genes for mapped QTLs controlling fatty acid composition and oil concentration, providing information for improving rice grain quality by marker assisted selection.

关键词： Rice fatty acid seed oil lipid metabolism QTL.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Dissecting the Genetic Basis of Extremely Large Grain Shape in Rice Cultivar 'JZ1560'

引用

Journal of Genetics and Genomics 2012年第7期39卷 325-333页

作者： jie-zheng ying Ji-Ping Gao Jun-Xiang Shan Mei-Zhen Zhu Min Shi Hong-Xuan Lin National Key Laboratory of Plant Molecular Genetics and National Center for Plant Gene Research(Shanghai) Shanghai Institute of Plant Physiology and EcologyShanghai Institutes for Biological SciencesChinese Academy of Sciences300 Fenglin RoadShanghai 200032China National Key Laboratory of Rice Biology China National Rice Research InstituteHangzhou 310006China

Rice grain shape, grain length （GL）, width （GW）, thickness （GT） and length-to-width ratio （LWR）, are usually controlled by multiple quantitative trait locus （QTL）. To elucidate the genetic basis of extremely large grain shape, QTL analysis was performed using an F2 population derived from a cross between a japonica cuttivar ＇JZI560＇（extremely large grain） and a contrasting indica cultivar ＇FAZI＇（small grain）. A total number of 24 QTLs were detected on seven different chromosomes. QTLs for GL, GW, GT and LWR explained 11.6%, 95.62%, 91.5% and 89.9% of total phenotypic variation, respectively. Many QTLs pleiotropically controlled different grain traits, contributing complex traits correlation. GW2 and qSW5/GW5, which have been cloned previously to control GW, showed similar chromosomal locations with qGW2-1/qGT2-1/qLWR2-2 and qGW5-2/qLWR5-1 and should be the right candidate genes. Plants pyramiding GW2 and qSW5/GW5 showed a significant increase in GW compared with those carrying one of the two major QTLs. Furthermore, no significant QTL interaction was observed between GW2 and qSW5/GW5. These results suggested that GW2 and qSW5/GW5 might work in independent pathways to regulate grain traits. ＇JZ1560＇ alleles underlying all QTLs contributed an increase in GW and GT and the accumulation of additive effects generates the extremely large grain shape in ＇JZ1560＇.

关键词： Rice Quantitative trait locus Additive effect Grain shape

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

TGW3, a Major QTL that Negatively Modulates Grain Length and Weight in Rice

引用

Molecular Plant 2018年第5期11卷 750-753页

作者： jie-zheng ying Ming Ma Chen Bai Xue-Hui Huang Jian-Li Liu Ye- Yang Fan Xian-Jun Song National Key Laboratory of Rice Biology and Chinese Center of RiceImprovement China National Rice Research Institute Hangzhou 310006 China Key Laboratory of Plant Molecular Physiology Institute of Botany the Chinese Academy of Sciences No.20 Nanxincun Xiangshan Beijing 100093 China College of Life and Environment Sciences Shanghai Normal University Shanghai 200234 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

Dear Editor, Grain length （size） and weight are essential components of crop yield. To date, many QTLs/genes for these traits have been identified. GS3 encodes a putative transmembrane protein and functions as a negative regulator, and its larger-grain allele contains a nonsense mutation causing a 178-aa truncation （Fan et al., 2006）. GL3.1/qGL3 encodes a putative protein phosphatase and also acts as a negative regulator of grain size （Qi et al., 2012; Zhang et al., 2012）. Another negative regulator of grain size and weight is TGW6, which hydrolyzes indole-3-acetic acid （IAA）-glucose into IAA and glucose （Ishimaru et al., 2013）.

关键词： RARE ALLELE YIELD SIZE SHAPE

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

An improved installation of 2-hydroxy-4-methoxybenzyl(iHmb)method for chemical protein synthesis

引用

Chinese Chemical Letters 2024年第5期35卷 145-150页

作者： ying Li Long-jie Wang Yong-Kang Zhou Jun Liang Bin Xiao Ji-Shen zheng The First Affiliated Hospital of USTC MOE Key Laboratory for Membraneless Organelles and Cellular DynamicsDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefei 230001China Department of Chemistry University of Science and Technology of ChinaHefei 230027China

The 2-hydroxy-4-methoxybenzyl(Hmb)backbone modification can prevent amide bond-mediated sidereactions(e.g.,aspartimide formation,peptide aggregation)by installing the removable Hmb group into a peptide bond,thus improving the synthesis of long and challenging peptides and ***,its use is largely precluded by the limited Hmb’s installation *** this report,an improved installation of Hmb(iHmb)method was developed to achieve the flexible installation and the convenient removal of *** iHmb method involves two critical steps:(1)oxidative diazotization of the readily installed 2-hydroxy-4-methoxy-5-amino-benzyl(Hmab)to give 2-hydroxy-4-methoxy-5-diazonium-benzyl(Hmdab)by combining soamyl nitrite(IAN)/HBF_(4),and(2)reductive elimination of Hmdab to give the desired Hmb by 1,2-ethanedithiol(EDT).The iHmb method enables the installation of Hmb at any primary amino acid including the highly sterically hindered amino acids(e.g.,valine and isoleucine).The practicality and utility of the iHmb method was demonstrated by one-shot solid-phase synthesis of a challenging aspartimide-prone peptide,the mirror-image version of a hydrophobic peptide and a long-chain peptide up to ***,the iHmb method can be utilized to facilitate chemical protein ligation,as exemplified by the synthesis of the single-spanning membrane protein *** iHmb method expands the toolkit for peptide synthesis and ligation and facilitates the preparation of peptides/proteins.

关键词： Chemical protein synthesis Solid-phase peptide synthesis Removable backbone modification 2-Hydroxy-4-methoxybenzyl(Hmb)group Aspartimide-prone peptides Difficult peptides Membrane proteins

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Immediate Effect of Electro-acupuncture on Endometrial Blood Flow in Patients with Recurrent Implantation Failure:A Randomized Controlled Trial

引用

Chinese Journal of Integrative Medicine 2024年第4期30卷 291-298页

作者： LAI Yuan-yuan LIU Li-ying WU Yong-na HUANG Lei zheng Xiao-yan GAN Di YU Si-yi ZHONG ying LIANG Fan-rong ZHOU ying YANG jie Acupuncture and Tuina School Chengdu University of Traditional Chinese MedicineChengdu(610032)China Sichuan Jinxin Xi'nan Women's and Children's Hospital Chengdu(610032)China Yuan TCM Wellness Pte.Ltd.(999002) Pulse TCM SingaporeSingapore

Objective To investigate the immediate effects of electro-acupuncture(EA)on endometrial blood flow among recurrent implantation failure(RIF)*** Eighty RIF patients,enrolled from March 2022 to December 2022,were randomly allocated into either the EA group(40 cases)or the waiting-list(WL)group(40 cases)by using a random number *** EA group underwent acupuncture at points of Shenting(GV 24),Baihui(GV 4),Benshen(GB 13),bilateral Zigong(EX-CA 1),Huangshu(KI 16),Sanyinjiao(SP 6)and Xuehai(SP10),and electric acupuncture apparatus was connected to EX-CA 1,KI 16,SP 6,and SP 10 with disperse-dense waves at 4/20 Hz frequencies for 30 min after transvaginal ultrasound,while the WL group received no *** primary outcome measured was the endometrial volume blood *** secondary outcomes included the bilateral uterine artery index,endometrial volume,endometrial blood flow type,vascular distribution index(VI^(MV))for endometrial and ovary,clinical pregnancy rate,and embryo implantation *** In the EA group,there was a notable decrease in the bilateral pulsatility index and a significant improvement in the endometrial blood flow type post-EA(P0.05).Besides,no adverse events related to EA were *** EA can promptly ameliorate VI^(MV) for the endometrial and right ovary,and endometrial blood flow *** randomized controlled trials are warranted to investigate the long-term effects of EA on blood flow of RIF patients and its implications for pregnancy outcomes.(Trial registration ***2200057377

关键词： electro-acupuncture recurrent implantation failure transvaginal ultrasound endometrial receptivityanalysis randomized controlledtrial

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Tunable Phase Structure of Side-chain Liquid Crystalline Polymers Enabled by Molecular Engineering of Dual Mesogenic Cores

引用

Chinese Journal of Polymer Science 2024年第10期42卷 1459-1469,I0009页

作者： Wen-Huan Yao Lan-Sheng Liu jie Zhao Yan-Xia Wang An-Zhi Ma zheng-Rui Ma Lan-ying Zhang Ruo-Chen Lan College of Chemistry and Chemical Engineering Hunan UniversityChangsha410082China Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education Key Laboratory of Eco-Environmental Polymer Materials of Gansu ProvinceCollege of Chemistry and Chemical EngineeringNorthwest Normal UniversityLanzhou730070China Department of Materials Science and Engineering College of EngineeringPeking UniversityBeijing100871China Institute of Advanced Materials&Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education College of Chemistry and Chemical EngineeringJiangxi Normal UniversityNanchang330022China

A series of novel side-chain liquid crystalline(SCLC)copolymers were synthesized by attaching two distinct mesogenic units,namely a chiral cholesteryl-based monomer(M1)and an achiral biphenyl-based monomer(M2),to a poly(3-mercaptopropylmethylsiloxane)(PMMS)backbone via thiol-ene click *** influence of side chain composition on the self-assembly behavior and phase structures of these SCLC copolymers was systematically investigated using different *** indicate that three distinct liquid crystalline phases and four unique molecular configurations were identified within the polymer series,with the emergence of the liquid crystalline phase being a synergistic outcome of the two distinct side *** study underscores the critical influence of side chain dimensions,rigidity,and spatial volume on the self-assembly structures and phase characteristics of liquid crystalline polymers,providing valuable insights for the rational design and development of advanced functional materials with tailored properties.

关键词： Liquid crystalline copolymers Self-assembly Phase structure Chiral molar ratio

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Accelerating the solving of mechanical equilibrium caused by lattice misfit through deep learning method

引用

Advances in Manufacturing 2024年第3期12卷 512-521页

作者： Chen-Xi Guo Hui-ying Yang Rui-jie Zhang Collaborative Innovation Center of Steel Technology University of Science and Technology BeijingBeijing100083People’s Republic of China Beijing Laboratory of Metallic Materials and Processing for Modern Transportation University of Science and Technology BeijingBeijing100083People’s Republic of China

Precipitation is a common phenomenon that occurs during heat *** is internal stress around the precipitate owing to the lattice misfit between the precipitate and *** internal stress has a significant influence not only on the precipitation kinetics but also on the material *** misfit stress can be obtained by numerically solving the mechanical equilibrium ***,this process is complex and *** developed a new approach based on deep learning to accelerate the solution *** training data were first generated by a phase-field model coupled with elastic mechanical equilibrium equations,which were solved using the finite difference *** obtained precipitate morphologies and corresponding stress distributions were input data for training the physics-informed(PI)UNet *** well-trained PI-UNet model can then be applied to predicting stress distributions with the precipitate morphology as the *** accuracy and efficiency are discussed in this *** results showed that the PI-UNet model was an appropriate approach for quickly predicting the misfit stress between the precipitate and matrix.

关键词： Precipitate Mechanical equilibrium Heat treatment Deep learning

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Size-controlled synthesis and near-infrared photothermal response of Cp^(*)Rh-based metalla[2]catenanes and rectangular metallamacrocycles

引用

Chinese Chemical Letters 2024年第6期35卷 337-343页

作者： ying Zhao Yin-Hang Chai Tian Chen jie zheng Ting-Ting Li Francisco Aznarez Li-Long Dang Lu-Fang Ma College of Chemistry and Chemical Engineering Henan Key Laboratory of Function-Oriented Porous MaterialsLuoyang Normal UniversityLuoyang 471934China College of Chemistry Zhengzhou UniversityZhengzhou 450001China Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials State Key Laboratory of Molecular Engineering of PolymersDepartment of ChemistryFudan UniversityShanghai 200438China

A variety of research reports on novel supramolecular topologies have been published over the last ***,it is still a great challenge to tap into the inner functional properties of these ***,two tetranuclear metallamacrocycles 1 and 2 and four octonuclear[2]catenanes 3-6 were constructed successfully via a coordination-driven self-assembly strategy,by conscious design and use of the tetramethyl bidentate pyridine ligand L1,and the appropriate selection of six binuclear half-sandwich rhodium building units with different longitudinal *** complexes have been fully characterized by single crystal X-ray diffraction analysis and NMR ***,near-infrared photothermal studies of the obtained[2]catenanes reveal different photothermal response in solid and solution states,which may be attributed to a strong fluorescence quenching effect of the half-sandwich organometallic fragment and different conjugated effect of Cp^(*)Rh based building blocks in the interlocking *** photothermal conversion efficiencies of[2]catenanes 4-6 fall in the range 30.5%-16.5% *** contribution aims to play a key role in the experimental development of Cp^(*)-based photothermal materials.

关键词： Catenanes Photothermal materials Supramolecular topologies Half-sandwich fragment 3,3'-N-donor analogues

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Formation and properties of a Zr-based amorphous coating by laser cladding

引用

Rare Metals 2024年第4期43卷 1809-1814页

作者： Ning Zhang ying Liu Wei Yang Shu-jie Pang Key Laboratory of Aerospace Materials and Performance(Ministry of Education) School of Materials Science and EngineeringBeihang UniversityBeijing100191China

(Zr_(0.53)Al_(0.1)Ni_(0.05)Cu_(0.3)Ti_(0.02))_(99)Y_1(at%)coating with amorphous layer of about 180μm thick was prepared on a steel substrate by using laser cladding *** coating is compact and shows good metallurgical bonding with *** microstructure,microhardness and corrosion behavior along the depth from the coating surface to the substrate were *** is found that a gradient structure consisted of amorphous surface layer,amorphous-crystalline transitional layer and substrate is formed after the laser *** microhardness and corrosion behavior exhibit variation with the microstructural evolution at different depths from the coating *** microhardness and corrosion resistance in 3.5 wt%NaCl solution of the amorphous surface layer are comparable to those of the as-cast Zr-based BMG with the same composition,and higher than those of the steel substrate.

关键词： Laser cladding Amorphous coating Microstructure Hardness Corrosion resistance

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Research on intelligent search-and-secure technology in accelerator hazardous areas based on machine vision

引用

Nuclear Science and Techniques 2024年第4期35卷 96-107页

作者： ying-Lin Ma Yao Wang Hong-Mei Shi Hui-jie Zhang School of Traffic and Transportation Beijing Jiaotong UniversityBeijing 100044China School of Mechanical Electronic and Control EngineeringBeijing Jiaotong UniversityBeijing 100044China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China

Prompt radiation emitted during accelerator operation poses a significant health risk,necessitating a thorough search and securing of hazardous areas prior to ***,manual sweep methods are ***,the limitations of manual sweeps have become increasingly evident with the implementation of large-scale *** leveraging advancements in machine vision technology,the automatic identification of stranded personnel in controlled areas through camera imagery presents a viable solution for efficient search and *** the criticality of personal safety for stranded individuals,search and security processes must be sufficiently *** ensure comprehensive coverage,180°camera groups were strategically positioned on both sides of the accelerator tunnel to eliminate blind spots within the monitoring *** YOLOV8 network model was modified to enable the detection of small targets,such as hands and feet,as well as larger targets formed by individuals near the ***,the system incorporates a pedestrian recognition model that detects human body parts,and an information fusion strategy is used to integrate the detected head,hands,and feet with the identified pedestrians as a cohesive *** strategy enhanced the capability of the model to identify pedestrians obstructed by equipment,resulting in a notable improvement in the recall ***,recall rates of 0.915 and 0.82were obtained for Datasets 1 and 2,*** there was a slight decrease in accuracy,it aligned with the intended purpose of the search-and-secure software *** tests conducted within an accelerator tunnel demonstrated the effectiveness of this approach in achieving reliable recognition outcomes.

关键词： Search and secure Machine vision Camera Human body parts recognition Particle accelerator Hazardous area

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：