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Dissertations / Theses on the topic 'Microsporea'

Author: Grafiati

Published: 26 July 2024

Last updated: 31 July 2025

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1

Sato, Vanessa Sayuri [UNESP]. "Produção de fitase por Rhizopus microsporus var. microsporus: purificação, caracterização bioquímica e aplicação." Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/124519.

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Made available in DSpace on 2015-07-13T12:10:29Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-02-27. Added 1 bitstream(s) on 2015-07-13T12:24:13Z : No. of bitstreams: 1 000827083.pdf: 2845300 bytes, checksum: a10a6bf4878453b759ee7bad0b028e37 (MD5)<br>A investigação biotecnológica acompanhada da aplicação das enzimas, combinada com o uso da engenharia genética tem sido realizada em micro-organismos para a produção de enzimas para fins industriais. Entre estas enzimas, as fitases microbianas, que catalisam a hidrólise do fitato (mio-inositol hexaquisfosfato) a mio-inositol e fosfato i

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Sato, Vanessa Sayuri. "Produção de fitase por Rhizopus microsporus var. microsporus : purificação, caracterização bioquímica e aplicação /." Araraquara, 2015. http://hdl.handle.net/11449/124519.

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Orientador: Luis Henrique Souza Guimarães<br>Banca: Daniela Alonso Bocchini Martins<br>Banca: José Roberto Ernandes<br>Banca: João Cláudio Thoméo<br>Banca: Patricia Gomes Cardoso<br>Resumo: A investigação biotecnológica acompanhada da aplicação das enzimas, combinada com o uso da engenharia genética tem sido realizada em micro-organismos para a produção de enzimas para fins industriais. Entre estas enzimas, as fitases microbianas, que catalisam a hidrólise do fitato (mio-inositol hexaquisfosfato) a mio-inositol e fosfato inorgânico, têm sido amplamente utilizadas na alimentação animal. Neste c

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Липовська, Вікторія Вікторівна, Виктория Викторовна Липовская, Viktoriia Viktorivna Lypovska та М. О. Крамар. "Епідеміологічна ситуація по захворюваності дітей на мікроспорію у північно-східному регіоні України". Thesis, Сумський державний університет, 2015. http://essuir.sumdu.edu.ua/handle/123456789/41994.

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Мікроспорія відноситься до найбільш поширених захворювань мікотичної етіології у педіатричній практиці, займаючи друге місце за розповсюдженістю в світі та Україні після мікозів стоп. Мікоз характеризується високою контагіозністю та швидким поширенням. Для запобігання розповсюдження захворювання серед дітей необхідно володіння лікарями інформацією про епідеміологічну ситуацію щодо захворюваності на мікотичні інфекції, зокрема на мікроспорію.

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4

Морозова, О. О., та В. Е. Коваленко. "Порівняльна характеристика захворювання на мікроспорію у деяких країнах світу та в Україні". Thesis, Сумський державний університет, 2015. http://essuir.sumdu.edu.ua/handle/123456789/42211.

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У сучасній дерматологічній практиці грибкові захворювання посідають одне з провідних місць, не поступаючись за кількістю жодному дерматозу. За різними оцінками, на частку мікозів припадає від 37 до 42% від усіх хвороб шкіри. Найбільш актуальною серед грибкових хвороб є мікроспорія, яка зустрічається на всіх континентах (за вийнятком Антарктиди).

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5

Guyon, Virginie Noelle Veronique. "Molecular study of microspore development in Brassica napus." Thesis, University of Reading, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387037.

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6

Naktinskaitė, Lina. "Dermatofito microsporum canis jautrumas dezinfekcinėms medžiagoms." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140305_140350-34848.

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Lietuvoje registruotų dezinfekcinių priemonių: baliklio, TH4+, Safe 4, Ecocid S, formalino, buvo atliktas tyrimas, nustatyti Microsporum canis jautrumą, dezinfektantui. Patogeninio mikromiceto M. canis kolonijos išskirtos iš dermatofitija sergančių kačių.<br>Experiment was done to determine Microsporum canis sensitivity for disinfectant, using detergents which are registered in Lithuania: bleach , TH4 + , Safe 4 , S ecocide , formalin. Micromycetes pathogenic M. canis colonies isolated from cats which infected by dermatophytosis.

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7

Hunter, Clifford Paul. "Plant regeneration from microspores of barley Hordeum vulgare L." Thesis, Imperial College London, 1988. http://hdl.handle.net/10044/1/7765.

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8

Scott, Peter. "The metabolism of sucrose and maltose by barley microspores." Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239199.

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9

Ornela, Pedro Henrique de Oliveira. "Co-purificação e caracterização das fosfatase e fitase alcalinas de Rhizopus microsporus var. microsporus produzidas em fermentação submersa /." Araraquara, 2017. http://hdl.handle.net/11449/151602.

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Orientador: Luis Henrique Souza Guimarães<br>Banca: Ariela Veloso de Paula<br>Banca: Hamilton Cabral<br>Resumo: A investigação biotecnológica, acompanhada da aplicação das enzimas, tem sido realizada em microrganismos para a produção de enzimas para fins industriais. Entre estas enzimas, as fosfatases, responsáveis por hidrolisar ésteres e anidridos de ácido fosfórico, e as fitases microbianas, que catalisam a hidrólise do fitato (mio-inositol hexaquisfosfato) em mio-inositol e fosfato inorgânico, têm sido amplamente utilizadas em diferentes setores como, por exemplo, em experimentos de biolog

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10

Zhao, Jiping. "Induction and mechanism of Brassica napus cv. Topas microspore embryogenesis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq20600.pdf.

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11

Ili´c-Grubor, Katica. "A novel approach to microspore embryogenesis in Brassica Napus L." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ32787.pdf.

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12

Stadnyk, Kimberly D. "Improvement on the microspore culture methodology for Brassica rapa canola." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ41780.pdf.

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13

Daniels, Stephen J. "Studies in the production of microspore-derived haploids in lupin." Thesis, University of Reading, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266148.

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14

Camacho, Fernández Carolina. "Microspore embryogenesis: cell wall dynamics and reprogramming of cell fate." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/163698.

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[ES] Los dobles haploides son una gran herramienta para la mejora genética de híbridos debido a que se puede alcanzar la homocigosis completa en una sola generación. Entre las técnicas usadas para obtener estas plantas, la inducción de la embriogénesis de microsporas, mediante el cultivo de anteras o de microsporas, es la más eficiente y la más usada. La embriogénesis de microsporas es también un ejemplo de totipotencia de las células vegetales gracias a su habilidad de reprogramar su desarrollo gametofítico hacia una ruta esporofítica, donde las células proliferan de forma organizada para cre

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15

Bélanger, Sébastien. "Caractérisation génomique et transcriptomique de la microspore embryogénique chez l'orge." Doctoral thesis, Université Laval, 2019. http://hdl.handle.net/20.500.11794/33304.

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L’androgenèse est une biotechnologie végétale utilisée pour fixer le bagage génétique des plantes en une seule génération. Elle repose sur la capacité d’un grain de pollen immature, la microspore, à restaurer sa totipotence cellulaire végétale et se dédifférencier puis s’engager dans la voie de l’embryogenèse. Or, on observe que la capacité de la microspore à s’engager dans l’embryogenèse est génétiquement variable. En dépit des nombreux avantages qu’elle présente, l’androgenèse entraîne souvent une conséquence indésirable, soit une distorsion de la ségrégation (DS) chez les populations issues

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16

Triggs, Heidi M. "Haploid production and genetic transformation of wheat (Triticum aestivum L.)." Thesis, University of Nottingham, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243689.

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17

Poulet, Blandine. "Microsporum persicolor : affections humaines ; etude chez les petits rongeurs." Nancy 1, 1991. http://www.theses.fr/1991NAN11146.

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Rivas, Sendra Alba. "Calcium and cell wall dynamics during microspore embryogenesis and double haploid production in rapeseed and eggplant." Doctoral thesis, Universitat Politècnica de València, 2017. http://hdl.handle.net/10251/85548.

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Androgenesis induction is an experimental procedure by which microspores are diverted from their original gametophytic pathway towards embryogenesis by applying specific stresses in vitro. It allows for the production of doubled haploid (DH) pure lines through anther culture or isolated microspore culture followed by chromosome doubling. DH technology is interesting for both basic research and plant breeding. In this Thesis, we studied microspore embryogenesis with two parallel approaches: (I) an applied study directed to the development of the first eggplant (Solanum melongena) highly embryog

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19

Roehe, Carlos. "Gatos portadores de dermatófitos na região metropolitana de Porto Alegre - RS, Brasil." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/95141.

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A dermatofitose é a zoonose micótica mais difundida mundialmente e os animais domésticos são os principais reservatórios dos dermatófitos zoofílicos que, em alguns países, são causadores mais frequentes da doença em humanos do que as espécies antropofílicas. Especificamente em relação ao Microsporum canis, principal espécie zoofílica nas zonas urbanas, pouco sucesso foi obtido com a produção de vacinas para seu controle. Os objetivos dessa pesquisa foram verificar a ocorrência gatos clinicamente sadios portadores de dermatófitos na região metropolitana de Porto Alegre e, também, analisar estat

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Redha, Amina. "Induction and analysis of chromosome doubling of microspore derived wheat haploids /." Zürich, 1998. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=12855.

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21

Boutilier, Kim. "Isolation and characterization of molecular markers for Brassica napus microspore embryogenesis." Thesis, University of Ottawa (Canada), 1994. http://hdl.handle.net/10393/6474.

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Brassica napus microspores can be diverted from pollen development toward haploid embryo formation in culture by subjecting them to a heat stress treatment. This switch in developmental pathways has been shown to be accompanied by the induction of high levels of napin seed storage protein gene expression (DeMoor, 1992). Specific members of the napin multigene family that were expressed at this time were cloned from a cDNA library prepared from microspores that had been induced to undergo embryogenesis. The majority of napin clones represented three members (BnmNAP2, BnmNAP3 and BnmNAP4) that,

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Cimò, Giuseppe. "Ploidy manipulation for genetic improvement in some Mediterranean fruit crops." Doctoral thesis, Universitat Politècnica de València, 2017. http://hdl.handle.net/10251/79874.

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Plant breeding is focused on selection of new genotypes with improved traits. Conventional methods based on hybridization and those based on biotechnology (somatic hybridization, genetic transformation, ploidy manipulation, etc.) are used to create novel genetic variations. Biotechnology provides powerful tools for plant breeding, for instance, haploid technology allows achievement of homozygous lines from heterozygous parents in one step, which reduces significantly the time required by conventional methods. Concerning woody species, characterized by self-incompatibility, long juvenile period

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23

Gaillard, Antoine. "Régénération et transformation chez le maïs : essais à partir de microspores isolées." Lyon 1, 1992. http://www.theses.fr/1992LYO10072.

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L'utilisation des biotechnologies chez les cereales est dependante de la maitrise d'un systeme de regeneration de plantes a partir de cellules isolees. Les techniques d'isolement de microspores mises au point pour differentes cereales permettent d'obtenir des populations de microspores en qualite et en quantite suffisantes pour permettre leur regeneration et realiser des analyses moleculaires. Chez le mais, les conditions de culture conduisant a la regeneration de plantes a partir de ces microspores ont ete definies. Notamment, il a ete trouve que le stade de developpement des microspores, la

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Liu, Weiguo. "Transformation of microspores for generating doubled haploid transgenic wheat (Triticum aestivum L.)." Online access for everyone, 2004. http://www.dissertations.wsu.edu/Dissertations/Fall2004/w%5Fliu%5F120204.pdf.

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Costa, Fernanda Vieira Amorim da. "Determinação da variabilidade genotípica entre isolados de Microsporum canis." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2010. http://hdl.handle.net/10183/31757.

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Microsporum canis é um dermatófito zoofílico e o fungo mais frequentemente isolado de cães e gatos, de crianças com tinea capitis e de adultos com tinea corporis. Ainda não se conhece as possíveis variáveis envolvidas no estabelecimento de infecções clínicas ou subclínicas em cães e gatos, assim como os fatores envolvidos na transmissão de M. canis para os seres humanos. Diversas técnicas de biologia molecular falharam em demonstrar variabilidade genética entre diferentes linhagens de M. canis, porém, estudos recentes indicam que a utilização de primers mais discriminatórios, como os marcadore

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Furukawa-Stoffer, Tara Lee. "Characterization of triacylglycerol biosynthetic enzymes from microspore-derived cultures of oilseed rape." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0027/MQ38426.pdf.

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Furukawa-Stoffer, Tara L., and University of Lethbridge Faculty of Arts and Science. "Characterization of triacylglycerol biosynthetic enzymes from microspore-derived cultures of oilseed rape." Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 1996, 1996. http://hdl.handle.net/10133/63.

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Particulate and solubilized preparations of phosphatidate (PA) phosphatase (EC 3.1.3.4) and dia-cylglycerol acyltransferase (DGAT, EC 2.3.1.20) from microspore-derived (MD) cultures of Brassica napus L. cv Topas were characterized. The activity of solubilized PA phosphatase decreased by about 50% following storage for 24 h at 4 degrees celsius, whereas the activity of DGAT decreased by 30%. Bovine serum albumin increased the stability of both enzymes. Both preparations were enriched in the target enzyme and thus, may be useful in studies of regulation with limited influence by the other Kenned

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Shedden, John Douglas. "Transient expression of ß-glucuronidase in embryogenic Brassica napus microspores following particle bombardment." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq20698.pdf.

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Zaki, Maged M. "The cell biology of haploid plant production from microspores of Brassica napus (L)." Thesis, University of Reading, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292442.

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Correa, Fernanda Simas. "Avaliação da suscetibilidade a antifungicos de dermatofitos do genero Microsporum." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/308179.

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Orientador: Angelica Zaninelli Schreiber<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas<br>Made available in DSpace on 2018-08-08T15:37:56Z (GMT). No. of bitstreams: 1 Correa_FernandaSimas_M.pdf: 2038543 bytes, checksum: 170a6e791e2c64d599b88b8485092a96 (MD5) Previous issue date: 2007<br>Resumo: Dermatófitos do gênero Microsporum acometem preferencialmente pele e pêlos, sendo M.canis e M.gypseum as espécies mais isoladas em nosso meio. Antifúngicos tópicos e sistêmicos são indicados para o tratamento destas dermatofitoses, que é considerado mais

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Ferreiro, Laerte. "Étiopathogénie des infections à Microsporum canis : étude d'une éxoprotéase kératinolytique." Paris 12, 1995. http://www.theses.fr/1995PA120039.

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Microsporum canis est le principal agent de dermatophytose chez les carnivores domestiques et est a l'origine d'infections zoonotiques tres frequentes dans le monde entier. Pour mieux comprendre les interactions hote-parasite, il est necessaire d'etudier les differents composants des champignons pouvant intervenir dans leur pathogenicite ainsi que les mecanismes de defense de l'hote, en particulier, la reponse immune. Ainsi pour etudier l'infection a m. Canis chez les carnivores domestiques, nous avons, dans un premier temps, isole de nombreuses souches de m. Canis chez des carnivores domestiq

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Tratt, Julia. "Identifying the wall-degrading enzymes responsible for microspore release from the pollen tetrad." Thesis, University of Bath, 2016. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.687381.

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Dissolution of the pollen tetrad walls after meiosis, and subsequent release of the haploid microspores, is essential for pollen development in many species, including Arabidopsis thaliana. The thick wall of the tetrad consists of callose (β-1,3-glucan), with a primary cell wall of cellulose, hemicellulose and pectin surrounding the whole structure. Despite the importance of microspore release, not all the wall-degrading enzymes involved have been identified in A. thaliana. 18 endo-β-1,3-glucanase genes were identified in A. thaliana that are expressed in buds at microspore release. Single and

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Policarpo, Lucas Makrakis. "Estudo de equilíbrio e cinética da biossorção de cobre (II) por Rhizopus Microsporus." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/3/3137/tde-13072016-162516/.

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A poluição relacionada a metais pesados tem recebido uma atenção especial devido a sua alta toxicidade, não biodegradabilidade e tendência de acumular-se na cadeia alimentar. Apesar disso, metais pesados também são considerados recursos valiosos, portanto a sua remoção em conjunto com a sua recuperação torna-se ainda mais importante. Este caso aplica-se aos rejeitos de mineração de cobre, os quais oferecem a possibilidade de recuperação do metal e de sua contenção de maneira segura do meio ambiente. Tais rejeitos se caracterizam por ocuparem enormes áreas inundadas e abrigarem soluções diluída

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LEAL, Carlos Adriano de Santana. "Desenvolvimento de uma multiplex PCR para identificação das principais espécies de dermatófitos que acometem cães e gatos." Universidade Federal Rural de Pernambuco, 2017. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/7303.

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Submitted by Mario BC (mario@bc.ufrpe.br) on 2018-06-18T14:44:33Z No. of bitstreams: 1 Carlos Adriano de Santana Leal.pdf: 1268535 bytes, checksum: 8c99ca6fceca2937628813239c097e09 (MD5)<br>Made available in DSpace on 2018-06-18T14:44:33Z (GMT). No. of bitstreams: 1 Carlos Adriano de Santana Leal.pdf: 1268535 bytes, checksum: 8c99ca6fceca2937628813239c097e09 (MD5) Previous issue date: 2017-02-16<br>The aim of this study was to standardize a multiplex PCR (mPCR) reaction to detect Microsporum canis, Microsporum gypseum and the Trichophyton mentagrophytes complex in fur and/or crusts samples o

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Maria, Rodrigues de Barros Corrêa Damázio Paula. "Dermatofitoses no Estado de Pernambuco : perfil epidemiológico e série de casos." Universidade Federal de Pernambuco, 2006. https://repositorio.ufpe.br/handle/123456789/7457.

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Made available in DSpace on 2014-06-12T18:32:23Z (GMT). No. of bitstreams: 2 arquivo8110_1.pdf: 1205143 bytes, checksum: 3c6fb699084662156122c7857341f9dd (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2006<br>Introdução: As dermatofitoses são infecções fúngicas freqüentes entre os homens. A constante mudança do perfil epidemiológico tornam necessários estudos regulares. O objetivo deste trabalho é determinar as dermatofitoses mais comuns em Pernambuco e seus agentes. Material e Métodos: Estudo transversal utilizando os registros de pa

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Nehlin, Lilian. "The use of rapeseed (Brassica napus L.) microspores as a tool for biotechnological applications /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1999. http://epsilon.slu.se/avh/1999/91-576-5490-5.pdf.

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Zhong, Danni. "Culture "in vitro" d'anthères et de microspores isolées de tournesol cultivé (Helianthus annuus L. )." Montpellier 2, 1992. http://www.theses.fr/1992MON20265.

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Deux methodes d'androgenese ont ete etudiees chez le tournesol cultive: culture in vitro d'antheres et de microspores isolees. Dans la culture in vitro d'antheres, l'incorporation du pvp insoluble ou de la cysteine a permis d'ameliorer le potentiel embryogene des antheres. Une relation inverse entre le brunissement enzymatique et les activites ppo et po d'un cote et le potentiel embryogene de l'autre a ete etablie. Les transferts successifs des embryons obtenus sur le milieu de regeneration contenant du saccharose en concentrations decroissantes a permis d'augmenter de facon significative le p

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Lemonnier--Le, Penhuizic Claire. "Effets d'oligosaccharides sur l'embryogenèse de microspores de brocoli : : mode d'action et transduction du signal." Rennes 1, 2001. http://www.theses.fr/2001REN10085.

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L'induction embryogène dans des cultures de microspores isolées est un processus dépendant d'un stress, qui peut être déclenché par un choc thermique, une privation de saccharose ou de nitrogène ou par l'utilisation d'inhibiteurs de la polymérisation des microtubules. Connus pour mimer des stress biotiques, les oligosaccharides ont été testés en tant que source de composés inducteurs de l'embryogenèse de microspores de Brassica napus var. Italica. Parmi les huit séries d'oligosaccharides étudiés et leurs polymères respectifs (à savoir des pectines, des alginates, des fucanes, des laminarines,

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Kocsis, Michael G., and University of Lethbridge Faculty of Arts and Science. "Characteristics of phosphatidate phosphatase from developing seeds and microspore-derived cultures of oilseed rape." Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 1994, 1994. http://hdl.handle.net/10133/23.

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Phosphatidate phosphatase (PAP. EC 3.1.3.4) was charaterized from developing seeds and microspore-derived (MD) cultures of oilseed rape. In studies with homogenate from developing seeds (Brassica napus L. cv Westar) the time course for release of inorganic phosphate from phosphatidate was linear for at least 60 min and the enzyme was stable to at least three cycles of freezing and thawing. Differential centrifugation studies were conducted with homogenate prepared from developing seeds (B. napus L. cv Westar), MD embryos (B. napus L. cv Reston), and an embryogenic MD cell suspension culture (B

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Giudice, Mauro Cintra. "Avaliação das atividades enzimáticas (queratinase e elastase) e biotipagem molecular de amostras de Microsporum gypseum isolados de diferentes fontes e regiões geográficas do Brasil." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/42/42132/tde-30032009-165027/.

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Estudou-se Microsporum gypseum de diferentes fontes regiões geográficas do Brasil.Os fungos foram isolados do solo, de animais e obtidos em coleções de cultura. Em 692 amostras de solo e a taxa de recuperação foi de 19,2%. A atividade queratinolítica e elastinolítica foi avaliada quantitativamente em 138 amostras de M. gypseum. A biotipagem molecular foi realizado através da técnica de PCR-RFLP com a enzima MvaI. O seqüenciamento da região ITS1 do rDNA foi realizado em amostras representativas. M. gypseum de amostras clínicas e do solo mostraram diferenças quantitativas significantes na expres

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Esteves, Patricio. "Optimisation de la culture de microspores isolées chez les orges de printemps à six rangs." Thesis, Université Laval, 2014. http://www.theses.ulaval.ca/2014/30476/30476.pdf.

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Les plantes haploïdes doublées (HD) sont des individus complètement homozygotes qui peuvent être obtenus via l’androgenèse in vitro. Les HD sont très appréciés comme outils de recherche en génétique et en amélioration végétale. La culture de microspores isolées (CMI) est le moyen le plus efficace de produire des HD. Malheureusement, les orges de printemps à six rangs, le type prédominant cultivé dans l’Est du Canada, sont considérées comme récalcitrantes à cause d’une faible embryogenèse et d’une propension à l’albinisme. Notre objectif était de développer un protocole CMI adapté à ce type d’o

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Maglione, Rémi. "Étude de l'intégrité du génome chloroplastique de l'orge (Hordeum vulgare) en culture de microspores isolées." Master's thesis, Université Laval, 2016. http://hdl.handle.net/20.500.11794/26919.

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Un enjeu actuel en biotechnologie est d'obtenir des plantes haploïdes doublées par la technique de la culture de microspores isolées (CMI). Pourtant, la CMI génère parfois une proportion importante de plantes albinos, laquelle peut atteindre 100 % chez certains cultivars. Des travaux antérieurs ont indiqué que des remaniements du génome chloroplastique seraient à l'origine de cet albinisme. Afin de mieux comprendre ce processus menant à l'albinisme, nous avons entrepris d'étudier l'intégrité du génome chloroplastique au sein de microspores d'orge et de plantes albinos via une approche de séque

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Cholley-Vignardet, Céline. "Approche de la connaissance d'une nouvelle keratinase de doratomyces microsporus (sacc. ) morton et smith par des etudes physico-chimiques et la recherche d'applications sur differents substrats keratinises (doctorat : sciences pharmaceutiques)." Besançon, 1999. http://www.theses.fr/1999BESA3511.

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Byers, Susan D. "Stimulation of microsomal diacylglycerol acyltransferase activity from microspore-derived cell suspension cultures of oilseed rape." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0016/MQ49143.pdf.

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Byers, Susan D., and University of Lethbridge Faculty of Arts and Science. "Stimulation of microsomal diacylglycerol acyltransferase activity from microspore-derived cell suspension cultures of oilseed rape." Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 1999, 1999. http://hdl.handle.net/10133/101.

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Several factors including an unidentified endogenous substance were found to stimulate microsomal diacylglycerol acyltransferase (DGAT, EC 2.3.1.20) from a microspore-derived cell suspension culture of oilseed rape (Brassica napus L. cv Jet Neuf). Mg2+ salts were found to stimulate microsomal DGAT 14 to 23-fold. ATP and CoA were also found to stimulate the enzyme 2.4 and 12 fold respectively, although the effects were decreased in the presence of high Mg2+ concentrations. While microsomal DGAT activity was only slightly increased by the concentration of exogenous diacylglycerol in the reaction

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MOHAMED, ABDELGALEL MOHAMED Ahmed. "STUDY ON GAMETIC EMBRYOGENESIS VIA IN VITRO ANTHER AND ISOLATED MICROSPORE CULTURE IN FRUIT CROPS." Doctoral thesis, Università degli Studi di Palermo, 2014. http://hdl.handle.net/10447/91257.

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Fruit breeding is mainly based on both conventional (hybridization, mutation and selection) or biotechnological methods (somatic hybridization, genetic transformation and haploid production). The genetic improvement through the conventional methods is limited by many factors such as fruit trees long juvenile period, high heterozygosity, large size and sexual incompatibility. Haploids and doubled haploids, obtained through gametic embryogenesis have a potential use in fruit crops genetic improvement. The change of the microspores fate from the normal gametopytic pathway towards the sporophytic

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Sparkes, Andrew Howard. "Aspects of feline dermatophytosis and the immune response to Microsporum canis infection." Thesis, University of Bristol, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.385524.

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CRAMBES, ELISABETH. "Obtention de plantes androgenetiques chlorophylliennes issues de microspores isolees chez le ble tendre (triticum aestivum l. )." Université Louis Pasteur (Strasbourg) (1971-2008), 1995. http://www.theses.fr/1995STR13250.

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Le but de cette these etait de mettre au point une methodologie permettant d'obtenir a partir de microspores initialement isolees de ble tendre des embryons androgenetiques puis des plantes chlorophylliennes. Apres une etude bibliographique des differents travaux menes sur l'amelioration de la culture d'antheres et son evolution vers la methode de culture de microspores isolees chez differentes especes, nous mettons en evidence les interets du modele microspores isolees mais aussi les difficultes rencontrees par les differents laboratoires pour en etablir la reproductibilite. Les travaux sont

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Davoren, Jonathan M., and University of Lethbridge Faculty of Arts and Science. "Gene expression in a microspore-derived cell suspension culture of Brassica Napus exhibiting enhanced oil production." Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 1997, 1997. http://hdl.handle.net/10133/345.

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Triacylglycerol (TAG) production in the microspore derived (MD) cell suspension culture ofBrassica napus L. cv Jet Neuf was enhanced when the sucrose concentration in the growth medium was increased from 2 to 14 % (w/v). mRNA differential display by polymerase chain reaction was used to examine gene expression in cells grown at different sucrose concentrations in order to identify mRNAs which could be associated with oil formation. The anchored primer, T12AA, was used to screen one subset, representing approximately one twelfth of the transcript population, isolated from cultures grown in medi

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Branco, Junior Armando Castello. "Estudos ecologicos e patologicos da infecção por Polidispyrenia simulu (Microspora : Pleistophoridae) em uma comunidade de Simulideos." [s.n.], 1991. http://repositorio.unicamp.br/jspui/handle/REPOSIP/315815.

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Orientador : Carlos Fernando S. de Andrade<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-07-14T00:21:30Z (GMT). No. of bitstreams: 1 BrancoJunior_ArmandoCastello_M.pdf: 5894643 bytes, checksum: 115de0a11659e19ead484b0be8a5b106 (MD5) Previous issue date: 1991<br>Resumo: No presente trabalho foi avaliada a ocorrência natural da microsporidiose causada por Polidispyrenia simulii em uma comunidade de simulídeos composta por três espécies, Simulium pertinax, S. subpallidum e S. pruinosum, em um riacho pertencente à bacia d

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