检索结果-南通市图书馆

Screening for Drought Resistance of Rice Recombinant Inbred Populations in the Field

Journal of Integrative Plant Biology 2007年第10期49卷 1508-1516页

作者： Gui-Hua Zou Hong-Yan liu Han-Wei mei Guo-Lan liu Xin-Qiao Yu Ming-Sou Li Jing-Hong Wu Liang Chen Li-Jun Luo Shanghai Agrobiological Gene Center Shanghai China201106 Huazhong Agncultural University Wuhan China430070 Shanghai Jiao Tong University Shanghai China200030 Zhejiang Academy of Agricultural Sciences Hangzhou China310021

In a 2-year experiment, 187 genotypes were grown under well-watered and drought stress conditions, imposed at panicle initiation stage. The relationship of genotypic variation in yield under drought conditions to potential yield, heading date and flowering delay, reduction in plant height, and to a drought response index （DRI） was detected. Grain yield under drought stress conditions was associated with yield under well-watered conditions （r= 0.47^＊＊, and r= 0.61^＊＊ during 2 years of tests）. The delay of heading date ranged from -1 （no delay） to 24days, and was negatively associated with grain yield （r =-0.40^＊）, spikelet fertility percentage （r =-0.40^＊＊）, harvest index （r =-0.58^＊＊）, but positively associated with yield reduction percentage （r = 0.60^＊＊）. The reduction in plant height was negatively associated with grain yield （r =-0.24^＊＊, and r=-0.29^＊＊）, spikelet fertility percentage （r = -0.23^＊＊, and r= -0.21^＊）, harvest index （r = -0.37^＊＊, and r= -0.54^＊＊）, and positively associated with yield reduction percentage （r = 0.58^＊＊, and r= 0.58^＊＊） in 2003 and 2004, respectively. The DRI of genotypes was strongly associated with grain yield （r = 0.87^＊＊, and r= 0.77^＊＊）, fertility percentage （r = 0.66^＊＊ and r= 0.54^＊＊）, harvest index （r= 0.67^＊＊ and r= 0.61^＊＊）, and negatively associated with grain reduction percentage （r=-0.70^＊＊, and r=-0.73^＊＊） under drought stress. The results indicate that genotypes with drought resistance can be identified by measuring yield potential, delay in flowering, reduction in plant height, or DRI under test environments of well-watered and drought stress.

关键词： delay in heading date drought resistance drought response index Oryza sativa reduction in plant height yield potential.

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

Phonon scattering and exciton localization: molding exciton flux in two dimensional disorder energy landscape

引用

eLight 2021年第1期1卷 57-68页

作者： Pengfei Qi Yang Luo Beibei Shi Wei Li Donglin liu Liheng Zheng Zhixin liu Yanglong Hou Zheyu fang School of Physics State Key Laboratory for Mesoscopic PhysicsAcademy for Advanced Interdisciplinary StudiesCollaborative Innovation Center of Quantum MatterNano-Optoelectronics Frontier Center of Ministry of EducationPeking UniversityBeijing 100871China. Institute of Modern Optics Tianjin Key Laboratory of Micro-Scale Optical Information Science and TechnologyNankai UniversityTianjin 300350China. Beijing Key Laboratory for Magnetoelectric Materials and Devices Beijing Innovation Centre for Engineering Science and Advanced TechnologyDepartment of Materials Science and EngineeringCollege of EngineeringPeking UniversityBeijing 100871China.

Two dimensional excitonic devices are of great potential to overcome the dilemma of response time and integration in current generation of electron or/and photon based *** ultrashort diffusion length of exciton arising from ultrafast relaxation and low carrier mobility greatly discounts the performance of excitonic *** scattering and exciton localization are crucial to understand the modulation of exciton flux in two dimensional disorder energy landscape,which still remain ***,we report an optimized scheme for exciton diffusion and relaxation dominated by phonon scattering and disorder potentials in WSe2 *** effective diffusion coefficient is enhanced by>200%at 280 *** excitons tend to be localized by disorder potentials accompanied by the steadily weakening of phonon scattering when temperature drops to 260 K,and the onset of exciton localization brings forward as decreasing *** findings identify that phonon scattering and disorder potentials are of great importance for long-range exciton diffusion and thermal management in exciton based systems,and lay a firm foundation for the development of functional excitonic devices.

关键词： Exciton diffusion Exciton relaxation 2D semiconductors Phonon scattering Disorder potentials

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

Panicle Water Potential,a Physiological Trait to Identify Drought Tolerance in Rice

引用

Journal of Integrative Plant Biology 2007年第10期49卷 1464-1469页

作者： Guo-Lan liu Han-Wei mei Xin-Qiao Yu Gui-Hua Zou Hong-Yan liu Ming-Shou Li Liang Chen Jin-Hong Wu Li-Jun Luo Huazhong Agricultural University Wuhan China430070 Shanghai Agrobiological Gene Center Shanghai China201106

Two upland rice varieties （IRAT109, IAPAR9） and one lowland rice variety （Zhenshan 97B） were planted in summer and treated with both normal （full water） and drought stress in the reproductive stage. Panicle water potential （PWP） and leaf water potential （LWP） were measured every 1.0-1.5 h over 24 h on sunny days. Both PWP and LWP of upland varieties started to decrease later, maintained a higher level and recovered more quickly than that of the lowland variety. The results show that PWP can be used as an indicator of plant water status based on the parallel daily changes, and the high correlation between PWP and LWP. Similar correlations were also observed between PWP, LWP and eight traits related to plant growth and grain yield formation. PWP seemed to be more effective for distinguishing the upland rice varieties with different drought-tolerant ability. Differences in PWP and LWP between upland and lowland rice varieties were also observed at noon even under normal water conditions, implying the incorporation of the drought-tolerant mechanism to improve the photosynthesis and yield of traditional paddy rice.

关键词： correlation analysis drought tolerance leaf water potential Oryza sativa panicle water potential.

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

A fluorescent film sensor for high-performance detection of Listeria monocytogenes via vapor sampling

Aggregate

引用

Aggregate 2023年第1期4卷 165-172页

作者： Rongrong Huang meiqi Li Dehui Lin Yangtao Shao Congdi Shang Qianqian liu Guijun liu Nan Li Rong Miao Haonan Peng Yanli Tang Yu fang Key Laboratory of Applied Surface and Colloid Chemistry(Ministry of Education) School of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi’anChina Shaanxi Engineering Laboratory for Food Green Processing and Safety Control College of Food Engineering and Nutritional ScienceShaanxi Normal UniversityXi’anChina Department of Food Safety College of Food Science and EngineeringNorthwest A&F UniversityShaanxiChina

Foodborne Listeria monocytogenes poses serious threats to public *** and sensitive detection of the pathogen at the point of contamination is thus crucial to halt the spread of bacteria-related ***,we report for the first time a fluorescent film sensor to detect the biomarker of ***,*** sensor demonstrated unprecedented sensing performance for the analyte with a detection limit lower than 0.05 mg/m^(3),response time less than 1 s,full reversibility,and excellent *** study showed that the sensor can be used to monitor the growth of *** with much-improved *** superior performance of the sensor is ascribed to the specific binding,efficient charge transfer emission,and porous adlayer structure of the specially designed sensing fluorophore-based *** work paves the way to develop a portable detector to meet the needs for on-site and real-time detection of foodborne pathogens.

关键词： 3-hydroxy-2-butanone biomarkers fluorescent film sensors Listeria monocytogenes

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

CD3ε of a pan T cell marker involved in mouse Aspergillus fumigatus keratitis

引用

International Journal of Ophthalmology(English edition) 2024年第4期17卷 616-624页

作者： Wen-Hao Shi Li-mei Wang Hai-Jing Yan Shi-Long liu Xian Yang Xue-JiaoYang Cheng-Ye Che Department of Ophthalmology the Affiliated Hospital of Qingdao UniversityQingdao 266000Shandong ProvinceChina Weifang Medical University Weifang 261053Shandong ProvinceChina Eye Hospital of Wenzhou Medical University Wenzhou 325027Zhejiang ProvinceChina Department of Medical Engineering the Affiliated Hospital of Qingdao UniversityQingdao 266000Shandong ProvinceChina

AIM:To explore whether CD3ε is involved in the adaptive immunity of Aspergillus fumigatus(***)keratitis in mice and the role of innate and adaptive immunity in ***:Mice models of *** keratitis were established by intra-stromal injection and corneal epithelial *** injections of natamycin,wedelolactone,LOX-1 inhibitor(poly I)or Dectin-1 inhibitor(laminarin)were used to treat mice with *** *** were pretreated by intraperitoneal injection of anti-mouse CD3ε.We observed the corneal infection of mice under the slit lamp microscope and made a clinical *** protein expression of CD3ε and interleukin-10(IL-10)was determined by Western ***:With the disease progresses,the degree of corneal opacity and edema *** the intrastromal injection models,CD3εprotein expression began to increase significantly on the 2^(nd) ***,in the scraping epithelial method models,CD3ε only began to increase on the 3^(rd) *** natamycin treatment,the degree of corneal inflammation in mice was significantly attenuated on the 3^(rd) *** wedelolactone treatment,the severity of keratitis *** the amount of CD3ε protein was also reduced,compared with the control *** inhibiting LOX-1 and Dectin-1,there was no significant difference in CD3ε production compared with the control *** inhibiting CD3ε,corneal ulcer area and clinical score increased,and IL-10 expression was ***:As a pan T cell marker,CD3ε participate in the adaptive immunity of *** keratitis in *** our mice models,the corneas will enter the adaptive immune stage *** regulating IL-10,CD3ε exerts antiinflammatory and repairs effects in the adaptive immune stage.

关键词： CD3ε adaptive immunity Aspergillus fumigatus keratitis interleukin-10

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

Study on the physiological indices of Pinus sibirica and Pinus koraiensis seedlings under cold stress

引用

Journal of Forestry Research 2019年第4期30卷 1255-1265页

作者： fang Wang Deyang Liang Xiaona Pei Qinhui Zhang Peng Zhang Jianqiu Zhang Zhimin Lu Yuchun Yang Guifeng liu Xiyang Zhao State Key Laboratory of Tree Genetics and Breeding Northeast Forestry UniversityHarbin 150040People's Republic of China Jilin Provincial Academy of Forestry Sciences Changchun 136000People's Republic of China

Although Pinus sibirica and Pinus koraiensis are resistant to cold or low temperatures in the cold temperate regions of the northern hemisphere,the former has a stronger cold *** has been limited to the comparison of physiological responses of the two species to cold *** this study,5-year-old seedlings of *** and *** were subjected to six temperature treatments,[20℃(control),0℃,-20℃,-40℃,-60℃,and-80℃],under different stress periods(6,12,24,and 48 h).The results showed that differences in each physiological index were significant between *** and ***,except for the permeability of cell membranes,reactive oxygen species,proline and soluble *** ANOVA test indicated that there were extreme differences among the temperatures for each index,stress time and temperature 9 time for most *** indices showed a similar trend for *** and *** with decreasing temperature or the extension of stress *** sugars and proline increased at 0 to-20℃and then remained unchanged with temperature *** indices showed an increase from 20 to-20℃,stable from-20 to-40℃and a decrease from-40 to-80℃.All the indices increased and then declined along with the prolonged cold stress time,except for the *** 0 to-40℃,the permeability of cell membranes,relative conductivity,reactive oxygen species and malonaldehyde of *** seedlings were higher than in ***,but superoxide dismutase,peroxidase,catalase activity and soluble sugars,proline,and soluble proteins content emerged as *** study compared the physiological mechanism responses to cold stress between *** and *** to provide the basis for the introduction,distribution,and genetic improvement of these coniferous species.

关键词： Pinus sibirica P koraiensis Cold stress Membrane system Antioxidant enzymes

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

Selection of Phage-resistant Strains from Escherichia coli glyA Genetic Engineering Bacteria

引用

Agricultural Biotechnology 2012年第2期1卷 35-37页

作者： Yunjun mei Hong liu School of Chemical and Environmental Engineering Wuhan Polytechnic University Three Gorges High School

[ Objective] This study aimed to select E. coli strains with phage-resistance. [ Method] Phage-resistant strains of E. coli glyA genetic engineering bacteria were selected by phage induction and UV-coupling phage induction. [ Result] By phage induction, 20 strains with stable resistance were selected from the 24 phage-resistant strains, only one strain showed better growth condition than the original strains, but the enzymatic activities of the 20 strains were all lower than the original strains; 41 phage-resistant strains were selected by UV-coupling phage induction, 39 strains of which had better stability, including 7 strains that showed better growth conditions than the original strains and two strains had higher enzymatic activities than the original strains. [ Conclusion] UV-coupling phage induction is a suitable method to select phage-resistant strains from Ecoli genetic engineering bacteria.

关键词： Escherichia coli Phage phage-resistant strains Selection

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

The Choice of Effective Vocabulary Learning Strategies

引用

海外英语 2014年第7X期 80-81页

作者： liu Jian-fang Baotou Teachers' College

This paper aims to make a comparison between good and poor language learners in the use of vocabulary learning strategies. It will introduce some helpful vocabulary learning strategies to help those frustrated Chinese... 详细信息

关键词： language learning strategy vocabulary good and poo

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

Constraining the Hubble constant to a precision of about 1% using multi-band dark standard siren detections

引用

Science China(Physics,Mechanics & Astronomy) 2022年第5期65卷 114-140页

作者： Liang-Gui Zhu Ling-Hua Xie Yi-Ming Hu Shuai liu En-Kun Li Nicola R.Napolitano Bai-Tian Tang Jian-Dong Zhang Jianwei mei School of Physics and Astronomy Sun Yat-sen University(Zhuhai Campus)Zhuhai 519082China MOE Key Laboratory of Tian Qin Mission Tian Qin Research Center for Gravitational PhysicsFrontiers Science Center for Tian QinCNSA Research Center for Gravitational WavesSun Yat-sen University(Zhuhai Campus)Zhuhai 519082China

Gravitational wave signal from the inspiral of stellar-mass binary black hole can be used as standard sirens to perform cosmological *** inspiral covers a wide range of frequency bands,from the millihertz band to the audio-band,allowing for detections by both space-borne and ground-based gravitational wave *** this work,we conduct a comprehensive study on the ability to constrain the Hubble constant using the dark standard sirens,or gravitational wave events that lack electromagnetic *** acquire the redshift information,we weight the galaxies within the localization error box with photometric information from several bands and use them as a proxy for the binary black hole *** discover that Tian Qin is expected to constrain the Hubble constant to a precision of roughly 30%through detections of 10 gravitational wave events;in the most optimistic case,the Hubble constant can be constrained to a precision of<10%,assuming Tian Qin I+*** the optimistic case,the multi-detector network of Tian Qin and LISA is capable of constraining the Hubble constant to within 5%*** is worth highlighting that the multi-band network of Tian Qin and Einstein Telescope is capable of constraining the Hubble constant to a precision of about 1%.We conclude that inferring the Hubble constant without bias from photo-z galaxy catalog is achievable,and we also demonstrate self-consistency using the P-P *** the other hand,high-quality spectroscopic redshift information is crucial for improving the estimation precision of Hubble constant.

关键词： gravitational wave standard siren Hubble constant stellar-mass binary black hole photometric luminosity multi-band gravitational wave detection

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

The Prokaryotic Expression and Bioactivity of the Recombinant Red Fire Ant Venom Allergen Sol i 4

引用

Agricultural Sciences in China 2009年第2期8卷 182-187页

作者： HAN Xue-qing LIN Xiang-mei CHEN Hong-jun ZHANG Yong-guo YE Gui-sheng WU Shao-qiang LI Jian CHEN Nai-zhong CHEN Yan ZHU Shui-fang Chinese Academy of Inspection and Quarantine Beijing 100029 P.R.China

The sting of red imported fire ant （RIFA） could cause serious allergic response in fraction of people. These allergic reactions are mainly caused by its venom, especially venom allergen Sol i 1-4. To produce large amount of RIFA venom allergen Sol i 4 for diagnosis of RIFA allergy and allergen-specific immunotherapy, the gene encoding this protein was amplified and cloned into the prokaryotic expression vector pET43, la. The recombinant plasmid was used to transform competent cells and the recombinant proteins were expressed in E. coll. SDS-PAGE and Western blotting analysis indicated that high-level expression of Sol i 4 protein was successfully achieved. Allergenic activity analysis of the recombinant allergen Sol i 4 was then performed on rabbit. The result showed that the recombinant protein obtained had significant allergenic activity. It indicated that the recombinant allergen Sol i 4 of RIFA venom was successfully expressed in E. coli, which provided foundation for further developing therapeutic and diagnosis reagents of RIFA allergy.

关键词： red imported fire ant recombinant allergen Sol i 4 expression activity

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：