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Littérature scientifique sur le sujet « Septorine »

Auteur : Grafiati

Publié le 4 juin 2021

Mis à jour le 14 février 2022

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Articles de revues sur le sujet "Septorine"

Ohta, Akihiro, Akihiko Kojima, Terumi Saito, et al. "First Synthesis of (+)-Septorine." HETEROCYCLES 32, no. 5 (1991): 923. http://dx.doi.org/10.3987/com-91-5682.

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OHTA, A., A. KOJIMA, T. SAITO, et al. "ChemInform Abstract: First Synthesis of (+)-Septorine (I)." ChemInform 22, no. 45 (2010): no. http://dx.doi.org/10.1002/chin.199145293.

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Barbier, Michel, and Michel Devys. "Syntheses dans la serie de la septorine: photooxydation du groupe methylene d'une benzylpyrazine." Tetrahedron Letters 26, no. 6 (1985): 733–34. http://dx.doi.org/10.1016/s0040-4039(00)89122-4.

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Devys, Michel, Michel Barbier, Albert Kollmann, and Jean-François Bousquet. "N-Methoxy septorinol, a substituted pyrazine from the fungus Septoria nodorum." Phytochemistry 31, no. 12 (1992): 4393–94. http://dx.doi.org/10.1016/0031-9422(92)80492-w.

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Becker, Walter Ferreira. "Avaliação de sistemas de previsão para a septoriose do tomateiro tutorado em Caçador, SC, Brasil." Agropecuária Catarinense 32, no. 3 (2019): 62–67. http://dx.doi.org/10.22491/rac.2019.v32n3.8.

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A septoriose, causada pelo fungo Septoria lycopersici, é uma das mais importantes doenças do tomateiro tutorado em Caçador, SC, Brasil. A doença é geralmente controlada pela aplicação preventiva de fungicidas. Experimentos de campo foram realizados com o objetivo de avaliar sistemas de previsão dessa doença: um com base no sistema TomCast (10, 15 e 20 valores de severidade – VSD), outro pelo período de molhamento foliar (limiar ≥ 12 horas), ambos comparados com a aplicação semanal de fungicidas. O TomCast utiliza a duração do molhamento foliar e a temperatura média deste período para calcular o valor de severidade diário da doença (VSD). Não houve diferença significativa entre o tratamento semanal e os previsores em relação a produtividade, severidade final, área abaixo da curva do progresso da doença e taxa de infecção aparente (r). Entretanto, com o tratamento 20-VSD houve redução de 12,5 a 70% das pulverizações em relação ao tratamento semanal. Termos para indexação: Solanum lycopersicum; sistema de alerta; TomCast; Septoria lycopersici; método de controle

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Baldicera, Alana Karine, Amauri Bogo, Francine Regianini Nerbass, Walter Ferreira Becker, Ricardo Trezzi Casa, and Fábio Nascimento da Silva. "Sensibilidade de isolados de Septoria lycopersici e eficácia de fungicidas no controle de septoriose em tomateiro." Revista de Ciências Agroveterinárias 19, no. 2 (2020): 159–70. http://dx.doi.org/10.5965/223811711922020159.

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A septoriose é uma das principais doenças do tomateiro e os prejuízos causados variam em função da área cultivada com cultivar suscetível, raças fisiológicas do patógeno e condições climáticas. O objetivo do estudo foi determinar a dose efetiva na inibição de 50% da germinação de esporos (DE50), avaliar o fator de redução de sensibilidade (FRS) de isolados de Septoria lycopersici e a eficiência de fungicidas tradicionalmente utilizados no controle da septoriose do tomateiro em Santa Catarina, durante as safras 2016 e 2017. Nos experimentos in vitro, 13 isolados de S. lycopersici obtidos de folhas com sintomas de septoriose do tomateiro de diferentes cultivares e os fungicidas tiofanato metílico e mancozeb nas concentrações de 0,1; 1,0; 10; 100 e 1000 mg L-1 do ingrediente ativo (i.a), foram avaliados para determinar a dose efetiva na inibição de 50% da germinação de esporos (DE50) e o fator de redução de sensibilidade (FRS). Os isolados provenientes de lavouras que receberam aplicações de fungicidas foram comparados com os isolados 475-1, 475-3, 475-4 e 475-7 proveniente de lavouras que não receberam aplicações de fungicidas. Nos experimentos in vivo, os fungicidas preventivos azoxistrobina, clorotalonil, captana e mancozeb e os curativos tiofanato metílico, mancozeb, difenoconazol e metconazol nas doses comerciais foram pulverizados 12, 24, 36, 48, 72 e 96 h antes (preventivo) e após (curativo) à inoculação do isolado 475-1 de S. lycopersici para avaliar a eficiência no controle da septoriose do tomateiro. Os ingredientes ativos tiofanato metílico e mancozeb, independente das doses testadas, foram atóxicos aos 13 isolados de S. lycopersici. Os valores de DE50 do tiofanato metílico e mancozeb para a inibição da germinação dos conídios variaram entre 75 e 580 mg L-1. Os fungicidas preventivos clorotalonil, azoxistrobina e os curativos difenoconazol e metconazol foram significativamente eficientes no controle da septoriose do tomateiro in vivo.

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Kudo, Angela Sathiko, José Ricardo Peixoto, Nilton Tadeu Vilela Junqueira, and Luiz Eduardo Bassay Blum. "Suscetibilidade de genótipos de maracujazeiro-azedo à septoriose em casa de vegetação." Revista Brasileira de Fruticultura 34, no. 1 (2012): 200–205. http://dx.doi.org/10.1590/s0100-29452012000100027.

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Neste estudo, foi avaliada a reação de genótipos de maracujazeiro-azedo (Passiflora edulis f. flavicarpa) à septoriose (Septoria passiflorae). Para a avaliação da reação dos genótipos, foi utilizado o índice de severidade de doença (1 - plantas sem sintomas; 2 - lesões esparsas nas folhas tomando até 10% do limbo foliar; lesões coalescentes tomando entre 10 a 33% do limbo foliar; 4 - lesões coalescentes tomando mais de 33% do limbo foliar; 5 - desfolha) e porcentagem de desfolha. Foi adotado o delineamento de blocos ao acaso, com quatro repetições e seis plantas por parcela, testando-se 60 genótipos. A inoculação foi feita por aspersão de suspensão de esporos (10(5) conídios/mL) patógeno. Foram feitas seis avaliações em intervalos de 7 dias. Os genótipos que apresentaram menor suscetibilidade foram MAR.20.27, Joseph e MAR.20.36. Entre a nota obtida pelo genótipo de menor suscetibilidade (3,4) e o de maior suscetibilidade (4,5), houve diferença de 31,8%, indicando que há variabilidade entre os genótipos para resistência à septoriose. Entre a maior (81,6%) e a menor (49,9%) porcentagem de desfolha apresentada pelos genótipos, houve diferença de 31,7%. Os genótipos MAR.20.58 e MAR.20.48 foram os mais suscetíveis, com severidade de 4,5 e 4,6 e de desfolha de 81,6% e 81,4%, respectivamente.

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Araújo, João Paulo Braga, Edson Luiz Furtado, Hélio Grassi Filho, and Ana Paula Zimbardi Lombardi. "APLICAÇÃO DE FUNGICIDA NA CULTURA DO TOMATEIRO VIA ÁGUA DE IRRIGAÇÃO EM CULTIVO PROTEGIDO." IRRIGA 7, no. 2 (2002): 81–90. http://dx.doi.org/10.15809/irriga.2002v7n2p81-90.

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APLICAÇÃO DE FUNGICIDA NA CULTURA DO TOMATEIRO VIA ÁGUA DE IRRIGAÇÃO EM CULTIVO PROTEGIDO João Paulo Braga Araújo Departamento de Engenharia Rural,Faculdade de Ciências Agronômicas,Universidade Estadual Paulista, CP 237, CEP 18603-970, Botucatu – SP, Fone (0xx14)6802-7194Edson Luiz FurtadoHélio Grassi FilhoDepartamento de Recursos Naturais, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista, CP 237, CEP 18603-970, Botucatu – SP, Fone (0xx14)6802-7143, E-mail: heliograssi@fca.unesp.brAna Paula Zimbardi LombardiDepartamento de Proteção de Plantas, Faculdade de Ciências Agronômicas,Universidade Estadual Paulista, CP 237, CEP 18603-970, Botucatu – SP, Fone (0xx14)6802-7167 1 RESUMO O presente trabalho objetivou estudar os efeitos de uma nova técnica de aplicação de fungicida, através da água de irrigação (gotejamento), na cultura do tomate híbrido “Débora Plus”, no controle da doença causada pelo fungo Septoria lycopersici Sepg. Além de estudar a comparação dos tipos de aplicação, foi estudado também 6 (seis) doses do fungicida benomyl na fungigação. As doses utilizadas foram: 75% (59,5 mg/vaso), 50% (119,0 mg/vaso), 25% a menos da dose recomendada (178,5 mg/vaso), 100% da dose recomendada (238,0 mg/vaso), 25% (297,5 mg/vaso) e 50% superior à dose recomendada (357,0 mg/vaso). As doses utilizadas nas aplicações via pulverização foram de 100% da dose recomendada pelo fabricante (238,0 mg/vaso). Para efeito de comparação entre os tratamentos avaliaram-se o número e pesos das matérias fresca e seca dos frutos colhidos e a altura das plantas. Na instalação do experimento adotou-se o delineamento em blocos casualizados com oito tratamentos e cinco repetições. De acordo com os resultados obtidos verificou-se que a aplicação convencional do benomyl, para controle da septoriose do tomateiro, foi superior à fungigação. Não houve diferença significativa entre as diferentes dosagens do produto na fungigação, mas houve o controle da doença. O parâmetro altura das plantas foi semelhante para todos os tratamentos, evidenciando que tanto a fungigação como a pulverização convencional não interferiu no crescimento das mesmas. O cultivo das plantas em casa de vegetação, utilizando vasos, proporcionou excelente resultado no controle de pragas e doenças, pois os tomateiros não apresentaram pragas tampouco outras doenças, além da Septoria lycopersici, que foi inoculada. Mesmo nas plantas testemunhas não houve disseminação da septoriose e, a irrigação com garrafas individuais também indicou bons resultados, pois deste modo sabe-se a quantidade de exata de fertilizantes, defensivos e água aplicada na planta. UNITERMOS: fungigação; benomyl; septoriose; gotejamento. ARAÚJO, J.P.B., GRASSI FILHO, H., FURTADO, E.L., LOMBARDI, A.P.Z. FUNGICIDE APLICATION ON TOMATO CROP BY DRIP IRRIGATION UNDER GREEN HOUSE CONDITIONS 2 ABSTRACT This research aimed to study the effects of a new fungicide application technique using irrigation water (drip irrigation) in “Debora Plus” hybrid tomato crop on the disease control caused by Septoria lycopersici Sepg mushroom. Besides comparing the application types, six doses of benomyl fungicide on the fungigation have also been studied. The doses were applied as follows: 75% (59.5 mg/pot), 50% (119.0 mg/pot), 25% under the recommended dose (178.5 mg/pot), 100% recommended dose (238.0 mg/pot), 25% (297.5 mg/pot) and 50% over the recommended dose (357.0 mg/pot). The spraying application doses were 100% the recommended dose (238.0 mg/pot). For comparative effect among treatments, fruit number, dry and fresh matter weight and height have been evaluated. The experiment was laid out in randomized block design with 8 treatments and 5 replications. . The results showed that the benomyl conventional application for tomato septoriosis control was better than the fungigation. There was no significant difference among different dosages of the product in the fungigation although there was the disease control. Plant height was similar for all treatments showing that both fungigation and conventional spraying had no influence on plant growth. Plant growing using pots under greenhouse condition provided excellent results on disease and pest control, as the tomato plants did not present neither pests nor other diseases unless Septoria lycopersici which was inoculated. There was no Septoria dissemination even on the control plants. The irrigation using single bottles has also presented good results since the exact amount of applied fertilizer, pesticide and water is known through this procedure. KEYWORDS: fungigation; benomyl; septoriosis; drip irrigation.

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Zahri, S., A. Ouazzani Touhami, M. Khouader, A. Farih, R. Benkirane, and A. Douira. "Caractérisation morpho-culturale et sporulation chez une population marocaine de Septoria tritici, agent de la septoriose du blé." Journal of Applied Biosciences 87, no. 1 (2015): 8121. http://dx.doi.org/10.4314/jab.v87i1.12.

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Sousa, Cristina S., Warwick E. Kerr, Marlos R. Santos, et al. "Mancha de Septoria da alface: isolamento, inoculação e avaliação de cultivares em condições de campo e casa de vegetação." Fitopatologia Brasileira 28, no. 5 (2003): 555–58. http://dx.doi.org/10.1590/s0100-41582003000500016.

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Este trabalho teve como objetivo estabelecer metodologias adequadas para o isolamento e inoculação de Septoria lactucae e avaliação de nove cultivares de alface (Lactuca sativa), Vitória-de-Santo-Antão, Uberlândia 10.000, Maioba, Elba, Aurélia, Black Seeded Simpson, Grand Rapids, Salad Bowl-Mimosa e Babá de Verão, quanto aos níveis de resistência à septoriose, em condições de casa de vegetação e campo. Os melhores resultados obtidos foram: a) para isolamento: transferência dos cirros de conídios diretamente para o meio de BDA com os antibióticos estreptomicina, cloranfenicol, ampicilina e rifampicilina; b) para inoculação: aspersão das plantas no estádio de seis a oito folhas com a suspensão de inóculo na concentração de 1 x 10(4)conídios/ml, e manutenção em câmara úmida por 48 h. Houve diferenças significativas entre as cultivares testadas em casa de vegetação e em campo. Tanto em casa de vegetação quanto em teste de campo as cultivares Maioba e Vitória de Santo Antão foram avaliadas como a mais susceptível e a mais resistente, respectivamente. Diante desses resultados, a metodologia de casa de vegetação pode ser considerada como altamente promissora para a avaliação rápida de grande número de variedades ou materiais genéticos, nos trabalhos de melhoramento de alface para a resistência à S. lactucae.

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Thèses sur le sujet "Septorine"

Fruit, Corinne. "Métallation de pyrazines. Application à la synthèse de la septorine. Synthèses et métallations de thioamides diaziniques." Rouen, 2001. http://www.theses.fr/2001ROUES005.

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Dans une première partie, la métallation de pyrazines 2,3-disubstituées a été étudiée. Selon la nature du substituant en position 2, une différence de réactivité des substrats a pu être observée. La fonctionnalisation de ces composés, via des réactions successives de métallation et l'introduction d'électrophiles appropriés, constitue une voie d'accès à des pyrazines tétrasubstituées. La métallation régiosélective sur le sommet 6 de la pyrazine associée à une réaction de couplage a permis d'effectuer une nouvelle synthèse formelle de la septorine. Dans le but d'étudier le pouvoir directeur des groupes thiocarbonylés lors de la réaction de métallation, la synthèse de nouveaux composés thiocarbonylés diaziniques a été réalisée : les thiocarboxamides et les thioamides. La thionation des amides diaziniques a conduit à la formation inattendue de thiazolodiazines. La métallation du noyau aromatique des thioamides n'a pas pu être réalisée et une réaction de S-alkylation a été observée. La métallation des thiocarboxamides pyraziniques et pyridaziniques a conduit à une régiosélectivité inattendue en position 5 du cycle. Un mécanisme de fonctionnalisation basé sur l'addition thiophile de la base lithiée a été proposé. La fonctionnalisation des thiocarboxamides, via la réaction de métallation, a permis l'obtention de nombreux composés nouveaux en série pyrazinique et pyridazinique.

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Hastoy, Cécile. "Caractérisation de la variabilité phénotypique de ressources génétiques de Stevia rebaudiana (Bertoni) : analyse des composantes du rendement et critères de sélection en condition de production." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0118.

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La consommation excessive de sucres conduit à l’augmentation de désordres métaboliques, tels que l’obésité et le diabète. Les consommateurs souhaitent une alimentation plus saine à base de produits d’origine naturelle. Stevia rebaudiana, l’herbe sucrée du Paraguay, accumule dans ses feuilles des glycosides de stéviol (SGs) considérés comme des édulcorants naturels intenses, dont le marché est en pleine expansion au niveau mondial. Dans ce contexte, la société Oviatis implante une filière BIO de Stevia rebaudiana en Nouvelle-Aquitaine. Les objectifs de cette thèse CIFRE sont de caractériser la variabilité phénotypique d’une collection de cette espèce en vue de la mise en place future d’un programme de sélection. Les composantes du rendement, de biomasse foliaire, de quantité et qualité des SGs et de la réponse à Septoria sp. ont été finement décrites en condition de production pluriannuelle et multi-sites ou en conditions contrôlées. Ces travaux ont permis de 1) développer des outils de phénotypage métabolique, pathologique et au champ, 2) évaluer la variabilité phénotypique de cette collection de Stevia rebaudiana en condition de production et identifier les descripteurs de cette variabilité, 3) identifier les facteurs ontogéniques, abiotiques et culturaux impliqués dans la variabilité de cette collection, 4) évaluer la variabilité de réponses face à la septoriose. Ces résultats permettent d’identifier les critères de sélection de cette espèce pour une production BIO en Nouvelle Aquitaine, ainsi que des génotypes d’intérêt. Ils constituent les bases de la mise en place d’un programme d’amélioration variétale Obesity and diabetes are consequences of metabolic disorders due to excessive sugar consumption. Consumers want a healthier diet with natural products. Stevia rebaudiana, the Paraguayan sweet herb, accumulates steviol glycosides (SGs) into its leaves. Considered as intense natural sweeteners, SGs represent a global market constantly increasing. In this context, Oviatis establishes a complete organic sector in the Nouvelle-Aquitaine region. The aims of this CIFRE thesis are to characterise the phenotypic variability within a collection of genetic resources, in order to implement a breeding program. Yield components, leaves biomass, SGs quality and quantity and responses against Septoria sp. were described in perennial and multi-site field conditions or in controlled conditions. This work allowed to: 1) develop tools for metabolic, pathology field-phenotyping, 2) evaluate the phenotypic variability of this Stevia rebaudiana collection in field conditions and identify variability descriptors, 3) identify ontogenic, abiotic and cultural factors implicated into phenotypic variability, and 4) evaluate response variability against septoria disease. These results led to the identification of genotypes of interest, as well as selection criteria for the organic production in Nouvelle-Aquitaine, which are the basis for the implementation of a breeding program

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Jordan, Faron. "Strobilurin resistance in Septoria tritici." Thesis, University of Nottingham, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.478958.

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Varain, Lauriane. "Transformation avec la bactérie Agrobacterium tumefaciens de deux Ascomycètes Septoria musiva et Septoria populicola, agents phytopathogènes du peuplier." Thesis, Université Laval, 2013. http://www.theses.ulaval.ca/2013/29915/29915.pdf.

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Septoria musiva (téléomorphe Mycosphaerella populorum) est un Ascomycète responsable de chancres sur tronc et jeunes branches en peupleraies et de taches foliaires en peupleraies et forêts. S. populicola (M. populicola) est responsable de taches foliaires sur peupliers. L’objectif de mon projet consiste à mettre en place un système de transformation à l’aide d’Agrobacterium tumefaciens pour ces deux champignons. A. tumefaciens est la bactérie causant la galle du collet, mais qui est utilisée couramment lors de transformation de végétaux et de champignons. Une première expérience a permis d’obtenir des transformants pour S. musiva avec le plasmide pPT1, mais aucun transformant n’a été obtenu pour S. populicola. Par la suite, un autre plasmide a été utilisé : pPL1. Cependant aucune souche transformée n’a pu être obtenue pour S. musiva, et S. populicola, malgré la vérification de différents paramètres. L’absence de transformant chez S. populicola peut être attribuée à un nombre insuffisant de conidies, tandis que pour S. musiva, un nombre insuffisant de bactéries ou un protocole de transformation non optimal pourrait expliquer les échecs successifs. Seporia musiva (Mycosphaerella populorum) is an Ascomycota which causes canker and leafspot on hybrid poplar. S. populicola (M. populicola) only causes leafspot. The aim of my project was to transform these two fungi with Agrobacterium tumefaciens, a bacterium which causes Crown gall, and is commonly used to transform plant and fungi in laboratory. In a first experiment, transformation using plasmid pPT1 were successful for S. musiva, but not for S. populicola. However, no transformants were obtained from either S. musiva and S. populicola in subsequent experiments in which plasmid pPL1 was used and different parameters were tested. A possible explanation for the inhability to obtain transformants from S. populicola is the low number of conidia available for transformation experiments. In the case of S. musiva, low number of bacterial cells and non optimal protocols might explain negative results observed.

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Bearchell, Sarah Jane. "The epidemiology of Septoria diseases of wheat." Thesis, University of Reading, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.398349.

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Qin, Ruqian. "Resistance to Septoria Musiva in Hybrid Poplar." Thesis, North Dakota State University, 2014. https://hdl.handle.net/10365/27576.

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Septoria leaf spot and stem canker, caused by the fungal pathogen Mycosphaerella populorum Thompson (Anamomorph = Septoria musiva Peck). An efficient greenhouse disease resistance screening is essential for the development of resistant clones. Fourteen clones of hybrid poplar were inoculated with spore suspension. A regression model with parameters (lesion number and proportion necrotic area) is consistently and accurately predicted field resistance categories of the most resistant and susceptible clones. In second experiments, the infection biology of S. musiva was examined at several time points by scanning electron microscopy (6 h, 12 h, 24 h, 72 h, 1-week and 3-week) and histological analysis (3-week, 5-week and 7-week). Results indicated that there are differences occur following penetration between the resistant and susceptible. Those differences provide the first clues elucidating resistance mechanism in hybrid poplar stems. The results from this thesis will be used to improve resistance to Septoria canker in breeding programs. USDA-NIFA North Dakota State University. College of Agriculture, Food Sciences and Natural Resources

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Pijls, C. F. N. R. M. J. "Population genetics of fungicide resistance in Septoria tritici." Thesis, University of Reading, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308103.

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Collin, François. "La tolérance du blé (Triticum aestivum L.) à la Septoriose." Thesis, Paris, Institut agronomique, vétérinaire et forestier de France, 2017. http://www.theses.fr/2017IAVF0028/document.

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La septoriose (pathogène Zymoseptoria tritici) est la plus importante maladie foliaire des cultures de blé en Europe. Les méthodes de lutte comprennent la résistance variétale, les stratégies d’évitement de la maladie et le recours aux fongicides. Cependant, ces stratégies n’assurent pas une protection complète des cultures de blé. La tolérance à la septoriose est une approche complémentaire qui vise justement à maintenir le rendement en présence de symptômes. La tolérance à la septoriose dépend de traits physiologiques de la plante et d’équilibres source/puits : la demande des puits (croissance des grains) doit être satisfaite malgré une disponibilité réduite des sources (capacité photosynthétique réduite par les symptômes foliaires). La surface verte du couvert, la sénescence et les composantes du rendement sont des traits potentiels de tolérance intéressants qui ont été étudiés lors de ce projet. Une étude de datamining, une expérience en serre et deux expériences au champ ont été menées pour fournir des informations complémentaires sur les mécanismes de tolérance à la septoriose. Les effets des interactions génotype × environnement sur les traits de tolérance ont été étudiés pour deux saisons × cinq localisations × neuf cultivars. La nutrition azotée et le métabolisme de quatre lignées double-haploïdes (DH, contrastées du point de vue de leur tolérance à la septoriose) ont été examinés dans une expérience en conditions contrôlées à l'UMR ECOSYS (INRA, AgroParisTech Grignon, France). Les bilans source/puits de six lignées DH contrastant pour la tolérance ont également été examinés en fonction de leurs réponses à un traitement d'égrainage, appliqué dans une expérience au champ à Hereford (Royaume-Uni). Enfin, une expérience au champ avec deux stratégies fongicides (contrôle total des maladies / lutte contre les maladies non-ciblées) a permis d’étudier la tolérance à la septoriose de six cultivars modernes (Leicestershire, Royaume-Uni). L'objectif principal était de vérifier les traits potentiels de tolérance à la septoriose sur des cultivars actuellement commercialisés. Des traits potentiels de tolérance à la septoriose ont été identifiés tels que la date d’épiaison, le faible degré de limitation des puits par les sources lors de la phase de remplissage du grain des couverts sains, la distribution verticale des surfaces foliaires favorisant des feuilles supérieures relativement grandes. Les résultats ont montré que ces caractères pourraient être sélectionnables, sans compromis avec le rendement potentiel. Enfin, le projet a également discuté du besoin de méthodes alternatives de quantification de la tolérance du blé à la septoriose, ainsi que de l'importance des variations environnementales qui doivent être prises en compte pour étudier les variations génétiques de la tolérance, mais qui pourraient également être utilisées pour identifier des environnements tolérants The Septoria tritici blotch disease (STB, pathogen Zymoseptoria tritici) is the most damaging foliar infection of wheat crops in Europe. Disease management strategies include cultivar resistance, disease escape strategy and fungicides. However, these strategies have failed to provide a complete protection of wheat crops. The STB tolerance is a complementary approach which aims to maintain yield in the presence of the symptoms. The tolerance of STB relies on plant physiology and source/sink balance: the sink demand (the grain growth) must be satisfied in spite of reduced source availability (photosynthetic capacity as affected by the STB symptoms on the leaves). The green canopy area, the senescence timing and the grain yield components are interesting potential sources of tolerance that were studied in this project. A data-mining study, one glasshouse experiment and two field experiments were carried out providing complementary insights on STB tolerance mechanisms. The genotype × environment interaction effects on tolerance traits were investigated for two seasons × five locations × nine cultivars datasets. The nitrogen nutrition and metabolism of four doubled-haploid (DH) lines contrasting for STB tolerance were examined in a controlled-glasshouse experiment at UMR ECOSYS (INRA,AgroParisTech) Grignon, France. The source/sink balance of six DH lines contrasting for STB tolerance was also examined according to their responses to a spikelet removal treatment, applied in a field experiment in Hereford, UK. Finally, a field experiment with two fungicide regimes (full disease control and non-target (STB) disease control) probed the STB tolerance of six modern UK winter wheat cultivars in Leicestershire, UK. The main objective was to verify identified potential STB tolerance traits in commercial cultivars. Putative STB tolerance traits have been identified such as the early heading date, the low degree of grain-source limitation of healthy crops during the grain filling phase, the vertical canopy distribution favouring a relatively larger flag-leaf. Results showed these traits might be selectable in wheat breeding without a trade-off with the potential yield. Finally, the project also discussed the need for alternative STB tolerance quantification methods, as well as the importance of environmental variations which have to be taken into account to study genetic variation in tolerance, but which could also be used to discriminate tolerant environment

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Schäuble, Andreas. "Septoria Tritici - Bedeutung, Biologie und Bekämpfung des Erregers der Weizenblattdürre." [S.l. : s.n.], 2005. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB11759389.

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Ferreira, Junior João Batista. "Eficiência de Fungicidas no Controle da Septoriose em tomateiro Industrial /." Jaboticabal, 2016. http://hdl.handle.net/11449/147083.

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Orientador: Antonio Goes Coorientador: Fernanda Dias Pereira Banca: Rita de Cássia Panizzi Banca: Juliana Stracieri Resumo: O presente trabalho teve como objetivo avaliar fungicidas de diversos grupos, isoladamente ou em mistura, no controle de Septoria lycopersici em tomateiro híbrido H-9553. Os tratamentos foram avaliados em três anos consecutivos, e constituíram nos seguintes: T1 - azoxistrobina + difenoconazol + clorotalonil; T2 - azoxistrobina + difenoconazol; T3 - clorotalonil; T4 - azoxistrobina; T5 - difenoconazol; T6 - fluazinam + clorotalonil; T7 - fluazinam; T8 - metiram + piraclostrobina + metconazol; T9 - metiram + piraclostrobina; T10 - metconazol; T11 - piraclostrobina; T12 - mancozebe; T13 - tetraconazole + tionafato metilico; T14 - tetraconazole; T15 - tiofanato metilico; T16 - ciprodinil; T17 - ciprodinil + difenoconazol; T18 - testemunha (sem fungicida). O delineamento experimental adotado foi o de blocos ao acaso, com quatro repetições. Cada unidade amostral foi representada por área de 31,25 m2 . As pulverizações, em número de 18, foram realizadas mediante pulverizador pressurizado a CO2, a 50 lb pol2, em intervalos de 7 dias e volume de 400 L ha-1 . Foram realizadas 17 avaliações, em intervalo semanal, nas três linhas centrais, em área de 18,75 m2 . Nas avaliações determinou-se a severidade dos sintomas, mediante escala de notas que variaram de 0 (ausência de sintomas) a 5 (severidade máxima). A partir do conjunto de dados foi determinada a área abaixo da curva de progresso da doença (AACPD). Adicionalmente, foram avaliadas a produtividade, em kg ha-1,... (Resumo completo, clicar acesso eletrônico abaixo) Abstract: The present study aim to evaluate various groups fungicides, alone or in combination, working on the control of Septoria lycopersici in hybrid tomato plant H-9553. The treatments were evaluated during three consecutive years, and was consisted in the following: T1 - azoxystrobin + difenoconazol + clorotalonil; T2 - azoxystrobin + difenoconazol; T3 - clorotalonil; T4 - azoxystrobin; T5) difenoconazol; T6) fluazinam + clorotalonil; T7 - fluazinam; T8 - metiram + piraclostrobina + metconazol; T9 - metiram + piraclostrobina; T10 - metconazol; T11 - piraclostrobina; T12 - mancozeb; T13 - tetraconazole + tionafato metilico; T14 - tetraconazole; T15 - tiofanato metilico; T16 - ciprodinil; T17 - ciprodinil + difenoconazol; T18 - witness (with no fungicide). The experimental adopted model was a randomized block with four replications. Each sample unit represented by the area of 31.25 m2 . The 18 spraying were made by spray pressurized CO2, at 50 lb pol2 at 7 day intervals and volume of 400 L ha-1 . Were realized 17 evaluations in weekly intervals, in three central lines in area of 18,75 m2 . The evaluations measured the severity of symptoms, a note scale ranging from 0 (no symptoms) to 5 (maximum severity). From the data set was determined the area under the disease progress curve (AACPD). In addition they were evaluated productivity in kg ha-1 and fruit standart. All treatments were statistically different from the witness as AACPD, productivity, % of green fruits and % of rotten fruit. Five treatments highlighted positively: T1 - azoxystrobin + difenoconazol + clorotalonil; T3 - clorotalonil; T4 - azoxystrobin; T8 - metiram + piraclostrobina + metconazol e T11 - piraclostrobina Mestre

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Livres sur le sujet "Septorine"

Paul, Y. S. Indian septoriae. Scientific Publishers, 2003.

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Osbourn, Anne E. Host adaptation and variation in septoria nodorum. University of Birmingham, 1985.

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Ostry, Michael E. Impact and control of Septoria musiva on hybrid poplars. U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station, 1989.

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Ostry, Michael E. Populus species and hybrid clones resistant to Melampsora, Marssonia, and Septoria. U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station, 1986.

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Strobl, Silvia. Variability in virulence of Septoria musiva Pk. isolates in eastern Ontario. National Library of Canada = Bibliothèque nationale du Canada, 1992.

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Siddiqui, M. R. Survival of Septoria nodorum Berk. in wheat seed stored at 5°C. [Institute of Seed Pathology for Developing Countries], 1989.

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Mann, Ruth Louise. Suppression of Septoria Tritici by foliar applied potassium chloride in winter wheat. University of Wolverhampton, 1999.

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Bannon, Finian J. Effects of a wheat clover intercrop on the development of septoria tritici blotch. University College Dublin, 1998.

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Cutler, Simon Barrett. The development of a homologous transformation system for Septoria nodorum based on nitrate assimilation. University of Birmingham, 1996.

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Johnson, Dennis A. Leaf scorch of shade trees. Cooperative Extension, College of Agriculture and Home Economics, Washington State University, 1986.

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Chapitres de livres sur le sujet "Septorine"

Kurzyca, H. P., and J. Friend. "Leaf Spotting Toxins from Septoria Nodorum." In Phytotoxins and Plant Pathogenesis. Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-73178-5_35.

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Arseniuk, E., P. M. Fried, A. L. Scharen, and J. H. Czembor. "Pathogenicity and Resistance Patterns in X Triticosecale — Septoria SPP. and Triticum Aestivum L. — Septoria SPP. Systems." In Durability of Disease Resistance. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2004-3_33.

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Cordo, C. A., A. E. Perrelló, H. O. Arriaga, and H. E. Alippi. "Bobwhite’s’ Germplasm Selection Pressure Upon Septoria Tritici Pathogenicity." In Durability of Disease Resistance. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2004-3_41.

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Arama, P. F. "Breeding and Selection of Bread Wheat for Resistance to Septoria Tritici." In Durability of Disease Resistance. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2004-3_16.

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Ostry, M. E., D. D. Skilling, O. Y. Lee-Stadelmann, and W. P. Hackett. "Recovery of Somatic Variation in Resistance of Populus to Septoria Musiva." In Plant Aging. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4684-5760-5_13.

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Nayyer, Md Abu, Md Feza Ahmad, Md Shamim, Deepa Lal, Deepti Srivastava, and V. K. Tripathi. "Molecular Approaches for the Control of Septoria Leaf Spot in Tomato." In Biotic Stress Management in Tomato. Apple Academic Press, 2021. http://dx.doi.org/10.1201/9781003186960-6.

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Gindrat, D., and P. Frei. "Evaluation of Three Methods for the Detection of Septoria Spp. in Wheat Leaves." In Developments in Plant Pathology. Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-009-0043-1_107.

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Titarenko, E., J. Hargreaves, J. Keon, and S. J. Gurr. "Defence-Related Gene Expression in Barley Coleoptile Cells Following Infection by Septoria Nodorum." In Developments in Plant Pathology. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1737-1_75.

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Korić, B. "Wheat Breeding for Resistance to Leptosphaeria Nodorum, The Cause of Septoria Nodorum Blotch in Croatia." In Durability of Disease Resistance. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2004-3_59.

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El Jarroudi, Moussa, Rachid Lahlali, Haifa El Jarroudi, et al. "Employing Weather-Based Disease and Machine Learning Techniques for Optimal Control of Septoria Leaf Blotch and Stripe Rust in Wheat." In Advances in Intelligent Systems and Computing. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-36664-3_18.

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Actes de conférences sur le sujet "Septorine"

Kalacheva, D. Y., and O. O. Beloshapkina. "Influence of Septoria fungi on productivity and yield of winter wheat varieties with different stability in the Penza region." In Растениеводство и луговодство. Тимирязевская сельскохозяйственная академия, 2020. http://dx.doi.org/10.26897/978-5-9675-1762-4-2020-116.

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The results of phytosanitary monitoring of mycoses in crops of 9 varieties of winter wheat in the Penza region on the basis of Limited liability corporations «SoyuzAgro» are presented. The prevalence of septoria infection varied in 2020 from 13 to 42%, and the development - from 1.5 to 5.5%. Varieties of different resistance were identified for production and selection for agronomically valuable traits - protein content, gluten, yield and resistance to septoria.

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Moreira, Luís, Arilson Ferreira, Gabriel De Arruda, and Rhyan De Brito. "A Utilização da Lógica Fuzzy Como Ferramenta Auxiliar na Detecção de Doenças Fúngicas do Tomateiro Como a Septoriose." In Escola Regional de Computação Ceará, Maranhão, Piauí. Sociedade Brasileira de Computação - SBC, 2020. http://dx.doi.org/10.5753/ercemapi.2020.11462.

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Os sistemas fuzzy são apropriados para a manipulação de informações subjetivas, como no cenário desta pesquisa sobre a septoriose no tomateiro. Podendo ser utilizado por profissionais para detectar a doença antes que se manifeste em todo o plantio. Devido a grande diversidade de doenças no tomateiro, detectar qual delas afeta a planta se torna demasiadamente difícil, dessa forma o objetivo deste artigo é discutir o uso da lógica fuzzy para auxiliar na análise das plantas e assim poder detectar se a mesma é portador ou poderá desenvolver a septoriose. De acordo com os resultados apresentados o sistema fuzzy demonstrou-se bastante útil para o auxílio na detecção da doença ficando evidente sua importância como ferramenta para diagnóstico em plantas.

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"Septoria blight of spring wheat in West Siberia." In Current Challenges in Plant Genetics, Genomics, Bioinformatics, and Biotechnology. Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences Novosibirsk State University, 2019. http://dx.doi.org/10.18699/icg-plantgen2019-22.

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Vlasova, O. I., E. A. Danilets, V. M. Perederieva, and I. A. Volters. "The effectiveness of biological pesticides in the cultivation of winter wheat for various previous crops for the purposes of protection against Septoria and increasing productivity." In Растениеводство и луговодство. Тимирязевская сельскохозяйственная академия, 2020. http://dx.doi.org/10.26897/978-5-9675-1762-4-2020-83.

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Nuzhnaya, T. V., S. V. Veselova, G. F. Burkhanova, and S. D. Rumyantsev. "Role of pathogen effectors SnTox in development of compatibility reaction in the pathosystem wheat – Stagonospora nodorum." In 2nd International Scientific Conference "Plants and Microbes: the Future of Biotechnology". PLAMIC2020 Organizing committee, 2020. http://dx.doi.org/10.28983/plamic2020.186.

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It was shown that the interactions of SnToxA-Tsn1, SnTox1-Snn1 in the pathosystem wheat-Stagonospora nodorum play an important role in the development of Septoria nodorum blotch and are aimed at manipulating of host redox-status.

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"The Septoria blight on the spring wheat varieties in the Western Siberia." In Plant Genetics, Genomics, Bioinformatics, and Biotechnology. Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, 2019. http://dx.doi.org/10.18699/plantgen2019-195.

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Cherepanova, E. A., G. F. Burkhanova, E. R. Sarvarova, and I. V. Maksimov. "The effect of bacterial lipopeptides on pro/wheat antioxidant system is normal and infectedcausative agent of septoria." In IX Congress of society physiologists of plants of Russia "Plant physiology is the basis for creating plants of the future". Kazan University Press, 2019. http://dx.doi.org/10.26907/978-5-00130-204-9-2019-469.

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Concepcion, Ronnie, Sandy Lauguico, Elmer Dadios, Argel Bandala, Edwin Sybingco, and Jonnel Alejandrino. "Tomato Septoria Leaf Spot Necrotic and Chlorotic Regions Computational Assessment Using Artificial Bee Colony-Optimized Leaf Disease Index." In TENCON 2020 - 2020 IEEE REGION 10 CONFERENCE (TENCON). IEEE, 2020. http://dx.doi.org/10.1109/tencon50793.2020.9293743.

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Shein, M. Yu, G. F. Burkhanova, and I. V. Maksimov. "The effect of bacterial strains on the transcriptional activity of genes of the RNA interference system in wheat (Triticum) infected with Septoria." In 2nd International Scientific Conference "Plants and Microbes: the Future of Biotechnology". PLAMIC2020 Organizing committee, 2020. http://dx.doi.org/10.28983/plamic2020.222.

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In wheat, the level of expression of DCL4 and AGO1 genes correlated with resistance to the pathogen S. nodorum. The transcriptional activity of these genes increased when treated with strains of B. subtilis 26D and B. thuringiensis 11.

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Mot, Cerasela. "EVALUATION OF THE PRESENCE OF COMMON LEAF SPOT (SEPTORIA FRAGARIAE) ON SOME WILD STRAWBERY (FRAGARIA VESCA) POPULATIONS ON SOUTH WEST PART OF ROMANIA." In 18th International Multidisciplinary Scientific GeoConference SGEM2018. Stef92 Technology, 2018. http://dx.doi.org/10.5593/sgem2018/6.2/s25.026.

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Rapports d'organisations sur le sujet "Septorine"

Ostry, Michael E., Louis F. Wilson, and Harold S. Jr McNabb. Impact and control of Septoria musiva on hybrid poplars. U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station, 1989. http://dx.doi.org/10.2737/nc-gtr-133.

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Ostry, Michael E., and Harold S. Jr McNabb. Populus species and hybrid clones resistant to Melampsora, Marssonina, and Septoria. U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station, 1986. http://dx.doi.org/10.2737/nc-rp-272.

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