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Inheritance patterns of secondary symbionts during sexual reproduction of pea aphid biotypes

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Insect Science 2014年第3期21卷 291-300页

作者： Jean Peccoud Joêl Bonhomme Frédérique Mahéo Manon de la Huerta Olivier Cosson Jean-Christophe Simon INRA Institut de Génétique Environnement et Protection des Plantes (UMR IGEPP) Domaine de La Motte 35653 le Rheu cedex France

Herbivorous insects frequently harbor bacterial symbionts that affect their ecol- ogy and evolution. Aphids host the obligatory endosymbiont Buchnera, which is requiredfor reproduction, together with facultative symbionts whose frequencies vary across aphid populations. These maternally transmitted secondary symbionts have been particularlystudied in the pea aphid, Acyrthosiphon pisum, which harbors at least 8 distinct bacterial species （not counting Buchnera） having environmentally dependent effects on host *** particular, these symbiont species are associated with pea aphid populations feeding on specific plants. Although they are maternally inherited, these bacteria are occasionallytransferred across insect lineages. One mechanism of such nonmaternal transfer is paternal transmission to the progeny during sexual reproduction. To date, transmission of secondarysymbionts during sexual reproduction of aphids has been investigated in only a handful of aphid lineages and 3.symbiont species. To better characterize this process, we investigatedinheritance patterns of 7 symbiont species during sexual reproduction of pea aphids through a crossing experiment involving 49 clones belonging to 9 host-specialized biotypes, and117 crosses. Symbiont species in the progeny were detected with diagnostic qualitative PCR at the fundatrix stage hatching from eggs and in later parthenogenetic *** found no confirmed case of paternal transmission of symbionts to the progeny, and we observed that maternal transmission of a particular symbiont species （Serratia symbiotica）was quite inefficient. We discuss these observations in respect to the ecology of the pea aphid.

关键词： bacteria Homoptera paternal inheritance phytophagous insects symbiosis transmission failure

Carbon isotopic compositions of pore and matrix carbonates in carbonate nodules,and origin of carbonate formation

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Carbon isotopic compositions of pore and matrix carbonates i...

中国科学院地质与地球物理研究所第十届(2010年度)学术年会

作者： LIU Lian~(1,2*),YIN QiuZhen~(1,3.,WU HaiBin~1 & GUO ZhengTang~1 1 Key laboratory of Cenozoic Geology and Environment,institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029, China 2 Graduate University of the Chinese Academy of Sciences,Beijing 100049,China 3.institut d’Astronomie et de Geophysique G.Lemaitre,Universite catholique de Louvain,Chemin du Cyclotron 2,13.8 Louvain-la-Neuve,Belgium

Carbon isotopes of pedogenic carbonate are often used to study paleoenvironments,but the existence of detrital carbonate changes the carbon isotopic *** develop an experimental method to determine existence of detrital carbonate in carbonate nodules,and to avoid it during isotope analysis,23.pedogenic carbonate nodules in Miocene loess from the Loess Plateau of China were studied through micromorphology and carbon isotope *** difference in carbon isotopic composition between matrix carbonate(B) and pore carbonate(A)(δC(B-A))) ranges from 0.27‰to 0.44‰in nodules containing detrital carbonate and -0.16‰to 0.13.in nodules where detrital carbonate is *** latter is within measurement error,but the former is beyond *** we propose an isotopic approach to determine if nodules contain detrital carbonate:ifδC(B-A)) is within the measurement error,the nodules do not contain detrital carbonate,and vice *** suggest that it is better to analyze pore carbonate instead of matrix carbonate when using carbon isotope of carbonate nodules to reconstruct paleoenvironments.

关键词： carbonate nodule pedogenic carbonate detrital carbonate carbon isotope

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中国传媒大学南广学院

中国法语专业教学研究

中国法语专业教学研究 2014年 405-408页

作者： Equipe pédagogique de franais de l’institut de Communication internationale de la CUCN 中国传媒大学南广学院国际传播学院法语教学团队

1.导语中国传媒大学南广学院国际传播学院2005年初设新闻学(法语新闻)专业方向,于2007年开设播音与主持艺术(法语节目主持)专业方向,2013.正式获批法语专业并首次招生23.。我校法语专业本着应用型本科人才培养的理念,旨在培养具有扎...

1.导语中国传媒大学南广学院国际传播学院2005年初设新闻学(法语新闻)专业方向,于2007年开设播音与主持艺术(法语节目主持)专业方向,2013.正式获批法语专业并首次招生23.。我校法语专业本着应用型本科人才培养的理念,旨在培养具有扎实法语语言基础和比较广泛的科学文化知识,能运用法语在传媒、外事、经贸、文化、教育、旅游等领域从事工作,具较强创新能力的应用复合型人才。2.总结与分析

关键词：

UN PROBLEME D’UNICITE RElaTIF AUX FONCTIONS MEROMORPHES

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Science in China,Ser.A 1963年第6期 743-750页

作者：熊庆来 institut de Mathematiques Academia Sinica

Soit f（z） une fonction,mromorphe dans tout le *** par E（a）l’ensemble des points-a de f（z） et par （Eλ）（a） celui des points de E（a） dont lesordres de multiplicit ne dpassent pas un certain entier λ;l’ensemble compl-mentaire de Eλ)（a） par raport E（a） aura Eλ（a） pour *** allonsdonner dans la prsente Note quelques rsultats concernant la dtermination def（z） par certains ensembles Eλ（a）.*** respectivement par Nλ)（r,a） et N)（λ（r,a） les indices dedensit constitus par tes points de Eλ）（a） et ceux de E(λ（a） qui sont compris dansle cercle |z|≤*** seconde ingalit fondamentale de Nevanlinna [1] peuts’crire

关键词： notation compl ensemble indices Premier borne resto forme termination premier

FORME MESURABLE de la THEORIE deS ENSEMBLES SOUSLINIENS,APPLICATIONS A la THEORIE de la MESURE

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Science in China,Ser.A 1975年第4期 444-463页

作者：严加安 institut de Mathematique Academia Sinica

On introduit, dans tout espace mesurable (F, ?), la notion d’ensemble ?-souslinien, distinctede celle d’ensemble ?-analitique, et la notion de mesure normale, correspondant dans le cas abstraita celle de mesure de Radon sur un espace topologique et equivalente a celle de mesure parfaite ausens de Kolmogorov-Gnedenko. On etablit, sous une forme mesurable au lieu de la forme topologi-que usuelle, la theorie des ensembles sousliniens et obtient quelques resultats nouvaux sur les ensem-bles sousliniens.

关键词： der ab FORME MESURABLE de la THEORIE deS ENSEMBLES SOUSLINIENS,APPLICATIONS A la THEORIE de la MESURE 门吸 de

UNE FONDATION THORIQUE de la MTHOde de la BAlaNCE HARMONIQUE

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Chinese Science Bulletin 1982年第6期27卷 579-583页

作者：关肇直陈文德 institut de la Science des Systèmes Academia Sinica

la méthode de la Balance Harmonique est une méthode très effective pour le traitement des problèmes non-linéaires dans la théorie classique du contr(?)le. Une idée fondamentale de la méthode consiste du jugement de l’existence d’une solution périodique d’une équation originale à la base de l’existence d’une solution lériodique d’une équation approximative. Cette méthode de l’ingénieur était auparavant dépourvue d’une démonstration rigoureuse. A. I. Mees et des autres auteurs ont fourni

关键词： contr projection forme dimensions semble ORIQUE de la M notation 色曲 reuse 二凡

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Case Study for Undetermined Mosquito Species by Polymerase Chain Reaction in Western Burkina Faso

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American Journal of Molecular Biology 2024年第2期14卷 43-53页

作者： Koudraogo Bienvenue Yaméogo Sassan Simplice Kambou Domonbabélé François de Sales Hien Logotio Rachel Angela Traore Franck Adama Yao Rakiswendé Serge Yerbanga Centre national de la recherche Scientifique et Technologique CNRST Institut de Recherche en Sciences de la Sante (IRSS) Laboratoire de recherche sur les maladies infectieuses et parasitaires Bobo-Dioulasso Burkina Faso institut des Sciences et Techniques (INSTech Bobo) Avenue de Sya Bobo-Dioulasso Burkina Faso

Introduction: Malaria eradication campaigns all over the world are largely based on parasite and vector control. Vector identification, whether morphological or molecular, is an essential component of vector control. This study analyzed the possible causes of indeterminate polymerase chain reaction (PCR) results for mosquito species in Western part of Burkina Faso. Methodology: From July 2021 to November 2021, mosquitoes were collected during the period of high malaria transmission in the village of Séguéré, Houet province, Burkina Faso, and morphologically identified. After DNA extraction, samples were amplified by sine 200× PCR to identify species of the Anopheles gambiae complex. Indeterminate samples were then selected for further analysis. The parameters studied were: DNA dilution, the effect of protocol adjusting, and the type of protocol used. Results: A total of 13. “indeterminate” DNAs diluted 1:10 were analyzed. After dilution, the mean amount was 14.73.± 3.59 ng/μL and absorbance 1.71 ± 0.1. PCR chain reaction yielded 94.62% (123.13.) anopheline species in SINE PCR, 5.3.% (7/13.) “negative”. A significant difference between SINE PCR before dilution and after dilution was observed (P dentification tests carried out using other protocols gave no positive results. From these results, we note that the adaptation of the protocol significantly reduced the polymerase amplification results of the species. Conclusion: It is therefore necessary to respect the amplification protocols. However, the persistence of “indeterminate” results suggests that further studies should be carried out to shed more light on the subject.

关键词： Malaria Vector DNA PCR

PROPRIT de REPRSENTATION PRVISIBLE POUR LES SEMIMARTINGALES SPCIALES

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Science in China,Ser.A 1980年第7期 803-813页

作者：严加安 institut de Mathématique Academia Sinica

Soit X une semimartingale spéciale, de décomposition canonique X= M+ A. On dit que X a la propriété de représentation prévisible, s’il en est ainsi de la martingale locale M. Dans cette note, on -caractérise la propriété de représentation prévisible pour une classe de semimartingales spéciales, et on généralise un théorème de Yoeurp-Yor. Comme une application de ces résultats, on donne une nouvelle démonstration du théorème de Fujisaki-Kallianpur-Kunita.

关键词： PROPRI SENTATION PR VISIBLE POUR LES SEMIMARTINGALES SP de REPR CIALES 落口云仓

Te-seeded growth of few-quintuple layer Bi2Te3.nanoplates

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Nano Research 2014年第9期7卷 1243-1253页

作者： Yanyuan Zhao Maria de la Mata Richard L. J. Qiu Jun Zhang Xinglin wen Cesar Magen Xuan P. A. Gao Jordi Arbiol Qihua Xiong Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological UniversitySingapore 637371 institut de Ciencia de Materials de Barcelona ICMAB-CSIC E-08193 Bellaterra CAT Spain department of Physics Case Western Reserve University Cleveland Ohio 44106 USA laboratorio de Microscopfas Avanzadas (LMA) Instituto de Nanociencia de Aragon (INA) - ARAID and Departamento de Fisica de la Materia Condensada Universidad de Zaragoza 50018 Zaragoza Spain Institucio Catalana de Recerca i Estudis Avancats (ICREA) 08010 Barcelona CAT Spain NOVITAS Nanoelectronics Centre of Excellence School of Electrical and Electronic Engineering Nanyang Technological University Singapore 639798

We report on a Te-seeded epitaxial growth of ultrathin Bi2Te3.nanoplates （down to three quintuple layers （QL）） with large planar sizes （up to tens of micrometers） through vapor transport. Optical contrast has been systematically investigated for the as-grown Bi2Te3.nanoplates on the SiO2/Si substrates, experimentally and computationally. The high and distinct optical contrast provides a fast and convenient method for the thickness determination of few-QL Bi2Te3.nanoplates. By aberration-corrected scanning transmission electron microscopy, a hexagonal crystalline structure has been identified for the Te seeds, which form naturally during the growth process and initiate an epitaxial growth of the rhombohedral- structured Bi2Te3.nanoplates. The epitaxial relationship between Te and Bi2T% is identified to be perfect along both in-plane and out-of-plane directions of the layered nanoplate. Similar growth mechanism might be expected for other bismuth chalcogenide layered materials.

关键词： Te nucleation seed epitaxial growth Bi2Te3 few-quintuple layer TEM cross-section optical contrast