检索结果-南通市图书馆

Genetics and fitness costs of resistance to flupyradifurone in Bemisia tabaci from China

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2022年第5期21卷 1436-1443页

作者： WANG Ran zhang Jia-song CHE Wu-nan WANG jin-da LUO Chen nstitute of Plant Protection Beijing Academy of Agriculture and Forestry SciencesBeijing 100097P.R.China National Engineering Research Center of Sugarcane Fujian Agriculture and Forestry UniversityFuzhou 350002P.R.China Department of Pesticide Sciences Shenyang Agricultural UniversityShenyang 110866P.R.China

Flupyradifurone is a promising new insecticide used for controlling Bemisia tabaci during vegetable *** this study,we assessed the fitness costs and mode of inheritance associated with resistance to flupyradifurone in *** by comparing the susceptible strain(MED-S)to one field-evolved flupyradifurone-resistant strain(WH-R,with 199-fold resistance)and one laboratory-selected flupyradifurone-resistant strain(FLU-SEL,with 124-fold resistance).Progenies of reciprocal crosses between WH-R and MED-S(F_(1A),F_(1B),and pooled F_(1)),and between FLU-SEL and MED-S(F_(1C),F_(1D),and pooled F_(1)’),showed varying degrees of dominance,indicating that resistance to flupyradifurone in WH-R was autosomal and incompletely dominant,yet in FLU-SEL it was autosomal and incompletely ***,the development of resistance to flupyradifurone occurred at the expense of fitness costs for the resistant *** to the MED-S strain,WH-R showed a relative fitness of 0.50 with significantly prolonged developmental durations and reduced survival rates of the nymphal and pseudopupal stages,as well as decreased fecundity and ***,FLU-SEL showed a relative fitness of 0.65 and also demonstrated prolonged developmental durations and reduced survival rates of nymphs and pseudopupae,as well as decreased hatchability in comparison with the MED-S ***,no significant differences in fecundity were observed between MED-S and *** present study provides useful knowledge for formulating pest management strategies in the field,which will allow growers to slow the development of resistance to flupyradifurone and to sustainably control ***.

关键词： Bemisia tabaci flupyradifurone insecticide resistance inheritance fitness costs

Fluorescence enhancement and cytotoxicity reduction of bis-viologen biphenyl by complexation of cucurbit[7]uril

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2021年第2期32卷 725-728页

作者： jing Zhou Shengzhen Hou jin zhang Yanru Chen Hao Chen Yebang Tan School of Chemistry and Chemical Engineering Shandong UniversityJi'nan 250100China Key Laboratory of Special Functional Aggregated Materials Ministry of EducationShandong UniversityJi'nan 250100China

The effect of cucurbit[7]uril(CB[7]) on fluorescence properties and biocompatibility of the bis-viologen biphenyl molecule(BPV22+) was investigated by using 1 H NMR spectroscopy,fluorescence emission titration,and in vitro cytotoxicity ***[7] can be combined with BPV22+ in a stoichiometric ratio of 1:1 and 2:*** the formation of host-guest complex,the fluorescence emission intensity of BPV22+ increased significantly,and the emission spectrum blue ***,the host-guest complexes showed better biocompatibility than BPV22+ in cell cytotoxicity *** of this paper lay a foundation for the development of host-guest type of fluo rescent probes,biological imaging and so forth.

关键词： Cucurbituril Host-guest complex Fluorescence enhancement Improvement of biocompatibility

Overexpression of OsPIL15, a phytochrome-interacting factor-like protein gene, represses etiolated seedling growth in rice

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2014年第4期56卷 373-387页

作者： jinjun Zhou Qianqian Liu fang zhang Yingying Wang Shiyong zhang Huimin Cheng Lihua Yan Li Li Fan Chen Xianzhi Xie Shandong Rice Research Institute Shandong Academy of Agricultural Sciences Shandong Provincial Key Laboratory of Crop Genetic Improvement Ecology and Physiology College of Life Sciences Shandong Normal University Institute of Genetics and Developmental Biology the Chinese Academy of Sciences

Phytochrome-interacting factors （PIFs） regulate an array of developmental responses ranging from seed germi- nation to vegetational architecture in Arabidopsis. However, information regarding the functions of the PIF family in monocots has not been widely reported. Here, we investigate the roles of OsPIL15, a member of the rice （Oryza sativa L. cv. Nipponbare） PIF family, in regulating seedling growth. OsPIL15 encodes a basic helix-loop-helix factor localized in the nucleus. OsPIL15-OX seedlings exhibit an exaggerated shorter above- ground part and undeveloped root system relative to wild-type seedlings, suggesting that OsPIL15 represses seedling growth in the dark. Microarray analysis combined with gene ontology analysis revealed that OsPIL15 represses a set of genes involved in auxin pathways and cell wall organization or biogenesis. Given the important roles of the auxin pathway and cell wall properties in controlling plant growth, we speculate that OsPIL15 represses seedling growth likely by regulating the auxin pathway and suppressing cell wall organization in etiolated rice seedlings. Additionally, exposure to red light or far-red light relieved growth retardation and promoted seedling elongation in the OsPIL15-OX lines, despite higher levels of OsPIL15 transcripts under red light and far-red light than in the dark. These results suggest that light regulation of OsPIL15 expres- sion is probably involved in photomorphogenesis in rice.

关键词： Auxin cell wall etiolated seedling rice photomorpho-genesis phytochrome-interacting factor

Prediction of Bond Dissociation Energy for Organic Molecules Based on a Machine-Learning Approach

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2024年第17期42卷 1967-1974页

作者： Yidi Liu Yao Li Qi Yang jin-Dong Yang Long zhang Sanzhong Luo Center of Basic Molecular Science(CBMS) Department of ChemistryTsinghua UniversityBeijing 100084China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China Shanghai Institute of Organic Chemistry University of Chinese Academy of SciencesChinese Academy of SciencesShanghai 200032China

Bond dissociation energy(BDE),which refers to the enthalpy change for the homolysis of a specific covalent bond,is one of the basic thermodynamic properties of *** is very important for understanding chemical reactivities,chemical properties and chemical ***,a machine learning-based comprehensive BDE prediction model was established based on the iBonD experimental BDE dataset and the calculated BDE dataset by *** et *** Structural and PhysicOChemical(D-SPOC)descriptors that reflected changes in molecules'structural and physicochemical features in the process of bond homolysis were designed as input features.

关键词： Bond dissociation energy Machine learning Molecular descriptors Prediction

Spatial patterns of interprovincial mountain geographical names in China and implications for regional governance

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

Journal of Mountain Science 2018年第11期15卷 2517-2530页

作者： zhang Sheng-rui WANG Ying-jie JU Hong-run zhang Tong-yan LI Dai-chao fang Lei WANG Ying-ying Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China University of Chinese Academy of Sciences Beijing 100049 China State Key Laboratory of Resources and Environmental Information Systems Institute of Geographic and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China School of Tourism and Geography Science Qingdao University Oingdao 266071 China

Suffering from fragile environment, poor accessibility and infrastructure, as well as social,political and economic marginality, the interprovincial mountain geographical entities are difficult areas for the regional governance in *** analyzing the spatial patterns and the influencing factors of the interprovincial mountain geographical names(IMGNs), the goal of this research is to clarify the geographical features of IMGNs and offer alternatives for the management of interprovincial mountain regions in China. The spatial visualization,the analysis of spatial agglomeration and the influencing factors of IMGNs were all implemented under a geographical information system. Results showed that there were 6869 IMGNs in China according to the database of "China's Second National Survey of Geographical Names(2014-2018)",including 4209 mountain geographical names, 1684 mountain peak geographical names and 976 the other mountain geographical names. Hunan Province had the largest number of names while Shanghai had the smallest number of names. In addition, the spatial variance of the mountain peak names and the mountain names were larger than that of the other mountain geographical names, and the IMGNs showed a significant clustering phenomenon in the southern part of China. The relative elevation and the population had an impact on the distribution of the IMGNs. The largest number of the names occurred where the relative elevation was between 1000-2000 m and where the population was between 40-50 million. Density of unnamed interprovincial mountain geographical entities declined from west to east in China. The analysis of generic names of different types of IMGNs implied that the naming of IMGNs is inconsistent. Based on these analyses, it is suggested that the government should take the IMGNs as management units, strengthen the naming of unnamed interprovincial mountain geographical entities, standardize the generic names of IMGNs and identify areas of poverty based on

关键词： Interprovincial mountain geographical names Spatial association Spatial variance GIS Regional governance China

Nocturnal Migration of Coleoptera:Carabidae in North China

在线全文

学校读者我要写书评

暂无评论

Agricultural Sciences in China 2008年第8期7卷 977-986页

作者： zhang Yun-hui CHEN Lin CHENG Deng-fa TIAN Zhe SUN jin-rui JIANG Yu-ying zhang Yue-jin State Key Laboratory for Biology of Plant Disease and Insect Pests Institute of Plant Protection Chinese Academy of Agricultural Sciences Beijing 100193 P.R.China National Agriculture Technique Extension Service Centre Beijing 100026 P.R.China

Vertical-looking radar （VLR） has allowed long-term automatic monitoring of the altitudinal and temporal dynamics of high- flying insect populations. To investigate whether ground beetle, insect of Coleoptera, was capable of migrating and its migration pattern by taking advantages of capability of the VLR for long-term real-time automatic monitoring, the migration of Coleoptera ground beetle was investigated by setting up radar observation points, making long-term observation using the VLR and related supplementary equipment, and analyzing low altitude air current and large area circulating current in combination with the meteorological data. Information obtained in 2005 and 2006 showed that the seasonal activities of ground beetles traps of trap lamps were mainly from late June to late August, peak period was mainly in August, seasonal traps of high-altitude lamps and ground lamps were featured by sudden increase and sudden decrease; in peak period, the height of radar echo point could be as high as 600 m, while it was mainly below the height of 450 m; night activities mainly occurred from 20：00 to 22：00, in very few nights, radar echo could last until about 04：00, changes in numbers of ground beetles within the searchlights were consistent with radar echo intensity; ground beetle images were successfully trapped in the sweep nets carried by captive balloons at the height of 200 m. Some species of Carabidaes had some degrees of migration, thus providing the foundation for investigating the migration of Coleoptera insects.

关键词： insect migration radar observation carabid flight behaviour

在线全文

学校读者我要写书评

暂无评论

霉变烟叶的GC-MS和FTIR分析及鉴别

光谱学与光谱分析 2025年第1期45卷 88-94页

作者：叶艳青张海瑜沈迪乐志伟吴玉萍孔光辉张建荣田孟玉陈建华张承明王晋云南民族大学化学与环境学院云南昆明650504 云南中烟工业责任公司技术中心云南昆明650106 红云红河烟草(集团)有限责任公司昆明卷烟厂云南昆明650231 云南省烟草农业科学研究院云南昆明650031

采用GC-MS和FTIR分析,结合PCA、PLS等多元分析方法,对霉变烟叶进行评价鉴别。GC-MS分析筛选得到2-乙基己醇等9个烟叶霉变标记物。通过4-羟基丁酸内酯等9个关键化合物构建的线性判别方程,可以实现烟叶霉变准确识别,初始验证准确率100%和... 详细信息

采用GC-MS和FTIR分析,结合PCA、PLS等多元分析方法,对霉变烟叶进行评价鉴别。GC-MS分析筛选得到2-乙基己醇等9个烟叶霉变标记物。通过4-羟基丁酸内酯等9个关键化合物构建的线性判别方程,可以实现烟叶霉变准确识别,初始验证准确率100%和留一交叉验证准确率为98.7%。FTIR研究表明,烟叶霉变过程中消耗了烟叶大量的碳水化合物、蛋白质和脂质等。GC-MS和FTIR,分别结合PCA和PLS-DA能实现霉变烟叶的有效判别。

关键词：霉变烟叶气相色谱-质谱联机傅里叶变换红外光谱多元统计分析

Rheological Evidence of the Lithospheric Destruction of the Eastern Block of the North China Craton

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2024年第S01期98卷 36-38页

作者： LI Baochun YE Gaofeng jin Sheng WEI Wenbo zhang Letian School of Geophysics and Information Technology China University of Geosciences(Beijing)Beijing 100083China School of Resources and Environmental Engineering Inner Mongolia University of TechnologyHohhot 010051China State Key Laboratory of Geological Process and Mineral Resources Beijing 100083China

The Eastern Block of the North China Craton(NCC)(Fig.1)has undergone severe lithospheric destruction,with crustal thinning down to 100 km depth(Chen et al.,2009),contrasting sharply with the stable Kalahari and Rae ***,there remains controversy over the destruction pattern(e.g.,Zhu et al.,2017).During the Early Mesozoic,crustal thickening occurred in the Xuhuai and Qinling orogens,followed by lithospheric delamination leading to crustal thinning(Chen et al.,2023).The middle and upper crustal thinning in the Yanshan and Taihang uplifts was induced by mafic magma underplating(Ji et al.,2009).

关键词： magnetotellurics resistivity viscosity Eastern Block North China Craton

Evidence for lung repair and regeneration in humans: key stem cells and therapeutic functions of fibroblast growth factors

在线全文

学校读者我要写书评

暂无评论

Frontiers of Medicine 2020年第3期14卷 262-272页

作者： Xuran Chu Chengshui Chen Chaolei Chen jin-San zhang Saverio Bellusci Xiaokun Li School of Pharmaceutical Sciences Wenzhou Medical UniversityWenzhou 325035China Cardio-Pulmonary Institute Universities of Giessen and Marburg Lung Centermember of the German Center for Lung ResearchJustus-Liebig-University Giessen35392 GiessenGermany Laboratory of Interventional Pulmonology of Zhejiang Province Department of Pulmonary and Critical Care MedicineThe First Affiliated Hospital of Wenzhou Medical UniversityWenzhou 325000China Institute of Life Sciences Wenzhou UniversityWenzhou 325035China

Regeneration carries the idea of regrowing partially or completely a missing ***,on the other hand,allows restoring the function of an existing but failing *** recognition that human lungs can both repair and regenerate is quite novel,the concept has not been widely used to treat *** present evidence that the human adult lung does repair and regenerate and introduce different ways to harness this *** types of lung stem cells are capable of proliferating and differentiating upon injury driving the repair/regeneration *** models,primarily in mice,combined with lineage tracing studies,have allowed the identification of these important *** of these cells,such as basal cells,broncho-alveolar stem cells,and alveolar type 2 cells,rely on fibroblast growth factor (FGF) signaling for their survival,proliferation and/or *** preclinical studies have shown the therapeutic benefits of FGFs,a recent clinical trial for acute respiratory distress syndrome (ARDS) using intravenous injection of FGF7 did not report the expected beneficial *** discuss the potential reasons for these negative results and propose the rationale for new approaches for future clinical trials,such as delivery of FGFs to the damaged lungs through efficient inhalation systems,which may be more promising than systemic exposure to *** this change in the administration route presents a challenge,the therapeutic promises displayed by FGFs are worth the effort.

关键词： FGF human lung repair regeneration stem cells