Componentes de resistência à brusone e respostas fisiológicas e bioquímicas de plantas de trigo supridas com silício

Detalhes bibliográficos
Autor(a) principal: Xavier Filha, Maria Santina
Data de Publicação: 2008
Tipo de documento: Dissertação
Idioma: por
Título da fonte: LOCUS Repositório Institucional da UFV
Texto Completo: http://locus.ufv.br/handle/123456789/4394
Resumo: The effect of the silicon (Si) was quantified on resistance components of the wheat to blast, as well as elucidates the possible physiological and biochemical alterations mediated by this element in response to the infection by the fungi Magnaporthe grisea. Two wheat plants of ‘Aliança’ and ‘BH1146’ cultivars were grown in plastic vase contend 0 and 1,25 g of wollastonite for ground kg that corresponded, respectively, to 0 and 0,30 g of Si/Kg of ground material. To balance calcium text between treatments, it was added 0,97 g of calcium carbonate (PRNT 100%, 40% Ca) to the vases that had not received wollastonite, standardizing the concentration of Ca in 0,37 g/vase. To 45 days after emergence, the plants were inoculated with suspension of 105 conidia/ml. In the first experiment were evaluated electrolyte leakage (EE) and the components of resistance: incubation period (PI), lesion size (TL), lesions number (NL) for cm2 of leaf area, area below the blast progress curve (AACPB) and the severity was estimated by QUANT software. Excepting PI, the Si affected negatively the evaluated resistance components. It had an increase of 14,5 h in PI and a reduction in TL, NL, AACPB and SR. In plants supplied with Si, the EE was reduced. In the second experiment, it was evaluated the photosynthetic tax (TF), the concentration of phenolic composites totals soluble (CFST) and of derivatives of the acid-tioglicolic lignin (LATG). The liquid tax of photosynthesis had increased in the plants supplied with Si, however only to 60 and 84 h after the inoculation, respectively, to cultivars them Aliança and BH 1146. The CFST concentration did not explain the resistance of the plants supplied with Si to blast. Contrarily, derivatives concentration of LATG was higher in plants of the two cultivars supplied with Si in elapsing of the infectious process, what it has contributed to increase the level of resistance of these cultivars to blast. The quitinases activity, mainly in plants supplied with Si, increased during the infection for M. grisea. Peroxidases had also increased in activity in plants supplied with Si, mainly of Aliança cultivar. Poliphenoloxidases had not an evident participation in the resistance of the wheat to blast, even in the presence of Si. The results of this study show for the first time the positive effect of Si in increase the resistance of wheat to blast for acting negatively in some components of resistance; beyond amplify defense mechanisms of biochemistry nature and improving the plant physiology with respect to a higher photosynthetic capacity.
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spelling Xavier Filha, Maria Santinahttp://lattes.cnpq.br/8007544923914215Mizubuti, Eduardo Seiti Gomidehttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4785633J8Pereira, Olinto Liparinihttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4767879D4Rodrigues, Fabrício de ávilahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4709080E6Dhingra, Onkar Devhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4788051H5Paula Júnior, Trazilbo José dehttp://lattes.cnpq.br/78992760970188762015-03-26T13:37:45Z2012-03-142015-03-26T13:37:45Z2008-02-29XAVIER FILHA, Maria Santina. Components of resistance to wheat blast and physiological and biochemical responses of wheat plants supplied with silicon. 2008. 69 f. Dissertação (Mestrado em Etiologia; Epidemiologia; Controle) - Universidade Federal de Viçosa, Viçosa, 2008.http://locus.ufv.br/handle/123456789/4394The effect of the silicon (Si) was quantified on resistance components of the wheat to blast, as well as elucidates the possible physiological and biochemical alterations mediated by this element in response to the infection by the fungi Magnaporthe grisea. Two wheat plants of ‘Aliança’ and ‘BH1146’ cultivars were grown in plastic vase contend 0 and 1,25 g of wollastonite for ground kg that corresponded, respectively, to 0 and 0,30 g of Si/Kg of ground material. To balance calcium text between treatments, it was added 0,97 g of calcium carbonate (PRNT 100%, 40% Ca) to the vases that had not received wollastonite, standardizing the concentration of Ca in 0,37 g/vase. To 45 days after emergence, the plants were inoculated with suspension of 105 conidia/ml. In the first experiment were evaluated electrolyte leakage (EE) and the components of resistance: incubation period (PI), lesion size (TL), lesions number (NL) for cm2 of leaf area, area below the blast progress curve (AACPB) and the severity was estimated by QUANT software. Excepting PI, the Si affected negatively the evaluated resistance components. It had an increase of 14,5 h in PI and a reduction in TL, NL, AACPB and SR. In plants supplied with Si, the EE was reduced. In the second experiment, it was evaluated the photosynthetic tax (TF), the concentration of phenolic composites totals soluble (CFST) and of derivatives of the acid-tioglicolic lignin (LATG). The liquid tax of photosynthesis had increased in the plants supplied with Si, however only to 60 and 84 h after the inoculation, respectively, to cultivars them Aliança and BH 1146. The CFST concentration did not explain the resistance of the plants supplied with Si to blast. Contrarily, derivatives concentration of LATG was higher in plants of the two cultivars supplied with Si in elapsing of the infectious process, what it has contributed to increase the level of resistance of these cultivars to blast. The quitinases activity, mainly in plants supplied with Si, increased during the infection for M. grisea. Peroxidases had also increased in activity in plants supplied with Si, mainly of Aliança cultivar. Poliphenoloxidases had not an evident participation in the resistance of the wheat to blast, even in the presence of Si. The results of this study show for the first time the positive effect of Si in increase the resistance of wheat to blast for acting negatively in some components of resistance; beyond amplify defense mechanisms of biochemistry nature and improving the plant physiology with respect to a higher photosynthetic capacity.Quantificou-se o efeito do silício (Si) sobre componentes de resistência do trigo à brusone, bem como elucidar as possíveis alterações fisiológicas e bioquímicas mediadas por esse elemento em resposta à infecção pelo fungo Magnaporthe grisea. Para tanto, duas plantas de trigo das cultivares Aliança e BH1146 foram crescidas em vaso plástico contendo 0 e 1,25 g de volastonita por Kg de solo, o que correspondeu, respectivamente, a 0 e 0,30 g de Si/Kg de material de solo. Para equilibrar o teor de cálcio entre os tratamentos, adicionou-se 0,97 g de carbonato de cálcio (PRNT 100%, 40% Ca) aos vasos que não receberam volastonita, padronizando a concentração de Ca em 0,37 g/vaso. Aos 45 dias após a emergência, as plantas foram inoculadas com suspensão a 105 conídios/ml. No primeiro experimento foram avaliados o extravasamento de eletrólitos (EE) e os componentes de resistência: período de incubação (PI), tamanho de lesão (TL), número de lesões (NL) por cm2 de área foliar, área abaixo da curva do progresso da brusone (AACPB) e severidade estimada pelo QUANT. À exceção do PI, o Si afetou negativamente os componentes de resistência avaliados. Houve aumento de 14,5 h no PI e uma redução no TL, NL, AACPB e SR. Em plantas supridas com Si, o EE de eletrólitos foi reduzido. No segundo experimento, foram avaliados a taxa fotossintética (TF), a concentração de compostos fenólicos solúveis totais (CFST) e de derivados da lignina ácidotioglicólico (LATG). Houve aumento na taxa líquida da fotossíntese nas plantas supridas com Si, porém somente às 60 e 84 h após a inoculação, respectivamente, para as cultivares Aliança e BH 1146. A concentração de CFST não explicou a resistência das plantas supridas com Si à brusone. Contrariamente, a concentração de derivados da LATG foi maior em plantas das duas cultivares supridas com Si no decorrer do processo infeccioso, o que contribuiu para aumentar o nível de resistência dessas cultivares à brusone. A atividade de quitinases, principalmente em plantas supridas com Si, aumentou durante a infecção por M. grisea. Peroxidases também tiveram aumento em atividade em plantas supridas com Si, principalmente da cultivar Aliança. Polifenoloxidases não tiveram uma participação evidente na resistência do trigo à brusone, mesmo na presença de Si. Os resultados desse estudo mostram pela primeira vez o efeito positivo do Si em aumentar a resistência do trigo à brusone por atuar negativamente em alguns componentes de resistência, além de potencializar mecanismos de defesa de natureza bioquímica e melhorar a fisiologia da planta no que se refere a uma maior capacidade fotossintética.Conselho Nacional de Desenvolvimento Científico e Tecnológicoapplication/pdfporUniversidade Federal de ViçosaMestrado em FitopatologiaUFVBREtiologia; Epidemiologia; ControleSilícioGramíneasResistênciaLigninaEnzimasSiliconGrassResistanceLigninEnzymesCNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOSSANIDADE::FITOPATOLOGIAComponentes de resistência à brusone e respostas fisiológicas e bioquímicas de plantas de trigo supridas com silícioComponents of resistance to wheat blast and physiological and biochemical responses of wheat plants supplied with siliconinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINALtexto completo.pdfapplication/pdf844286https://locus.ufv.br//bitstream/123456789/4394/1/texto%20completo.pdfae6964a2a73c7c6751ad88e3669f7d38MD51TEXTtexto completo.pdf.txttexto completo.pdf.txtExtracted texttext/plain131814https://locus.ufv.br//bitstream/123456789/4394/2/texto%20completo.pdf.txt3b87b50599b7228e7f83876d14f3bcddMD52THUMBNAILtexto completo.pdf.jpgtexto completo.pdf.jpgIM Thumbnailimage/jpeg3606https://locus.ufv.br//bitstream/123456789/4394/3/texto%20completo.pdf.jpgdccba22cd10a0849f1a1542540318807MD53123456789/43942016-04-10 23:09:58.545oai:locus.ufv.br:123456789/4394Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452016-04-11T02:09:58LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false
dc.title.por.fl_str_mv Componentes de resistência à brusone e respostas fisiológicas e bioquímicas de plantas de trigo supridas com silício
dc.title.alternative.eng.fl_str_mv Components of resistance to wheat blast and physiological and biochemical responses of wheat plants supplied with silicon
title Componentes de resistência à brusone e respostas fisiológicas e bioquímicas de plantas de trigo supridas com silício
spellingShingle Componentes de resistência à brusone e respostas fisiológicas e bioquímicas de plantas de trigo supridas com silício
Xavier Filha, Maria Santina
Silício
Gramíneas
Resistência
Lignina
Enzimas
Silicon
Grass
Resistance
Lignin
Enzymes
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOSSANIDADE::FITOPATOLOGIA
title_short Componentes de resistência à brusone e respostas fisiológicas e bioquímicas de plantas de trigo supridas com silício
title_full Componentes de resistência à brusone e respostas fisiológicas e bioquímicas de plantas de trigo supridas com silício
title_fullStr Componentes de resistência à brusone e respostas fisiológicas e bioquímicas de plantas de trigo supridas com silício
title_full_unstemmed Componentes de resistência à brusone e respostas fisiológicas e bioquímicas de plantas de trigo supridas com silício
title_sort Componentes de resistência à brusone e respostas fisiológicas e bioquímicas de plantas de trigo supridas com silício
author Xavier Filha, Maria Santina
author_facet Xavier Filha, Maria Santina
author_role author
dc.contributor.authorLattes.por.fl_str_mv http://lattes.cnpq.br/8007544923914215
dc.contributor.author.fl_str_mv Xavier Filha, Maria Santina
dc.contributor.advisor-co1.fl_str_mv Mizubuti, Eduardo Seiti Gomide
dc.contributor.advisor-co1Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4785633J8
dc.contributor.advisor-co2.fl_str_mv Pereira, Olinto Liparini
dc.contributor.advisor-co2Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4767879D4
dc.contributor.advisor1.fl_str_mv Rodrigues, Fabrício de ávila
dc.contributor.advisor1Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4709080E6
dc.contributor.referee1.fl_str_mv Dhingra, Onkar Dev
dc.contributor.referee1Lattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4788051H5
dc.contributor.referee2.fl_str_mv Paula Júnior, Trazilbo José de
dc.contributor.referee2Lattes.fl_str_mv http://lattes.cnpq.br/7899276097018876
contributor_str_mv Mizubuti, Eduardo Seiti Gomide
Pereira, Olinto Liparini
Rodrigues, Fabrício de ávila
Dhingra, Onkar Dev
Paula Júnior, Trazilbo José de
dc.subject.por.fl_str_mv Silício
Gramíneas
Resistência
Lignina
Enzimas
topic Silício
Gramíneas
Resistência
Lignina
Enzimas
Silicon
Grass
Resistance
Lignin
Enzymes
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOSSANIDADE::FITOPATOLOGIA
dc.subject.eng.fl_str_mv Silicon
Grass
Resistance
Lignin
Enzymes
dc.subject.cnpq.fl_str_mv CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOSSANIDADE::FITOPATOLOGIA
description The effect of the silicon (Si) was quantified on resistance components of the wheat to blast, as well as elucidates the possible physiological and biochemical alterations mediated by this element in response to the infection by the fungi Magnaporthe grisea. Two wheat plants of ‘Aliança’ and ‘BH1146’ cultivars were grown in plastic vase contend 0 and 1,25 g of wollastonite for ground kg that corresponded, respectively, to 0 and 0,30 g of Si/Kg of ground material. To balance calcium text between treatments, it was added 0,97 g of calcium carbonate (PRNT 100%, 40% Ca) to the vases that had not received wollastonite, standardizing the concentration of Ca in 0,37 g/vase. To 45 days after emergence, the plants were inoculated with suspension of 105 conidia/ml. In the first experiment were evaluated electrolyte leakage (EE) and the components of resistance: incubation period (PI), lesion size (TL), lesions number (NL) for cm2 of leaf area, area below the blast progress curve (AACPB) and the severity was estimated by QUANT software. Excepting PI, the Si affected negatively the evaluated resistance components. It had an increase of 14,5 h in PI and a reduction in TL, NL, AACPB and SR. In plants supplied with Si, the EE was reduced. In the second experiment, it was evaluated the photosynthetic tax (TF), the concentration of phenolic composites totals soluble (CFST) and of derivatives of the acid-tioglicolic lignin (LATG). The liquid tax of photosynthesis had increased in the plants supplied with Si, however only to 60 and 84 h after the inoculation, respectively, to cultivars them Aliança and BH 1146. The CFST concentration did not explain the resistance of the plants supplied with Si to blast. Contrarily, derivatives concentration of LATG was higher in plants of the two cultivars supplied with Si in elapsing of the infectious process, what it has contributed to increase the level of resistance of these cultivars to blast. The quitinases activity, mainly in plants supplied with Si, increased during the infection for M. grisea. Peroxidases had also increased in activity in plants supplied with Si, mainly of Aliança cultivar. Poliphenoloxidases had not an evident participation in the resistance of the wheat to blast, even in the presence of Si. The results of this study show for the first time the positive effect of Si in increase the resistance of wheat to blast for acting negatively in some components of resistance; beyond amplify defense mechanisms of biochemistry nature and improving the plant physiology with respect to a higher photosynthetic capacity.
publishDate 2008
dc.date.issued.fl_str_mv 2008-02-29
dc.date.available.fl_str_mv 2012-03-14
2015-03-26T13:37:45Z
dc.date.accessioned.fl_str_mv 2015-03-26T13:37:45Z
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dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
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dc.identifier.citation.fl_str_mv XAVIER FILHA, Maria Santina. Components of resistance to wheat blast and physiological and biochemical responses of wheat plants supplied with silicon. 2008. 69 f. Dissertação (Mestrado em Etiologia; Epidemiologia; Controle) - Universidade Federal de Viçosa, Viçosa, 2008.
dc.identifier.uri.fl_str_mv http://locus.ufv.br/handle/123456789/4394
identifier_str_mv XAVIER FILHA, Maria Santina. Components of resistance to wheat blast and physiological and biochemical responses of wheat plants supplied with silicon. 2008. 69 f. Dissertação (Mestrado em Etiologia; Epidemiologia; Controle) - Universidade Federal de Viçosa, Viçosa, 2008.
url http://locus.ufv.br/handle/123456789/4394
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dc.publisher.department.fl_str_mv Etiologia; Epidemiologia; Controle
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