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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sul. Para informações adicionais entre em contato com cppsul.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sul. |
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Data corrente: |
22/12/2020 |
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Data da última atualização: |
23/12/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
VICTORIA ARELLANO, A. D.; SILVA, G. M. da; GUATIMOSIM, E.; DORNELES, K. da R.; MOREIRA, L. G.; DALLAGNOL, L. J. |
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Afiliação: |
Alfonso D. Victoria Arellano, UFPEL; GUSTAVO MARTINS DA SILVA, CPPSUL; Eduardo Guatimosim, FURG; Keilor da Rosa Dorneles, UFPEL; Luana Geri Moreira, UFPEL; Leandro J. Dallagnol, UFPEL. |
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Título: |
Seeds coated with Trichoderma atroviride and soil amended with silicon improve the resistance of Lolium multiflorum against Pyricularia oryzae. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Biological Control, v. 154, 104499, Mar. 2021. |
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DOI: |
https://doi.org/10.1016/j.biocontrol.2020.104499 |
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Idioma: |
Inglês |
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Conteúdo: |
Ryegrass (Lolium multiflorum L.) is a forage species with a high content of protein and good palatability and digestibility. In winter, it is frequently used in southern Brazil as feed for livestock. The high humidity in this region is propitious for gray leaf spot, a disease caused by Pyricularia oryzae, considered to be the region?s main biotic problem. In this study, we aimed to evaluate the effect of three types of management, namely seed coating with Trichoderma atroviride (T), application of silicon in the soil (Si), and combination of both treatments (TSi), to reduce the severity of gray leaf spot. In the first phase, the capacity of 10 native isolates of Trichoderma spp. were evaluated in vitro for direct inhibition of P. oryzae based on tests of dual cultures (DC), antibiosis for volatile (Vol), and non-volatile compounds (Nvol). In vivo trials involved the ability to induce resistance responses, such as quantifying severity (SEV) and number of lesions (NL) per cm2 of leaf area. In the second phase, the efficacy of T, Si, and TSi was tested under greenhouse conditions. The lesion expansion rate (LER), relative efficiency of infection (RIE), SEV and NL were measured (after inoculation with P. oryzae), and in parallel the activities of the enzymes superoxide dismutase (SOD), catalase (CAT), peroxidase (POX) and phenylalanine ammonia-lyase (PAL) were quantified (at 24, 48, 72, and 96 h). The strain TR10 (identified by polyphasic taxonomy as T. atroviride) showed one of the highest inhibition values in Vol (23%) and DC (35%). Plants from seeds treated with the strain TR10 had the lowest levels of SEV (5.5%) and NL (3), in contrast with the other strains according to analysis of variance. Under greenhouse conditions, significant differences (P <0.0001) were found for LER, RIE, NL and SEV in T, Si, and TSi concerning TE (control treatment). The defense response of T was related to the activities of CAT, POX, and PAL (mainly), while for Si, other mechanisms, which were not evaluated in this study, might have contributed to disease reduction, and TSi did not show an additive effect. The treatment of seeds with T. atroviride and the application of Si in the soil improved the resistance of L. multiforum against infection by P. oryzae. MenosRyegrass (Lolium multiflorum L.) is a forage species with a high content of protein and good palatability and digestibility. In winter, it is frequently used in southern Brazil as feed for livestock. The high humidity in this region is propitious for gray leaf spot, a disease caused by Pyricularia oryzae, considered to be the region?s main biotic problem. In this study, we aimed to evaluate the effect of three types of management, namely seed coating with Trichoderma atroviride (T), application of silicon in the soil (Si), and combination of both treatments (TSi), to reduce the severity of gray leaf spot. In the first phase, the capacity of 10 native isolates of Trichoderma spp. were evaluated in vitro for direct inhibition of P. oryzae based on tests of dual cultures (DC), antibiosis for volatile (Vol), and non-volatile compounds (Nvol). In vivo trials involved the ability to induce resistance responses, such as quantifying severity (SEV) and number of lesions (NL) per cm2 of leaf area. In the second phase, the efficacy of T, Si, and TSi was tested under greenhouse conditions. The lesion expansion rate (LER), relative efficiency of infection (RIE), SEV and NL were measured (after inoculation with P. oryzae), and in parallel the activities of the enzymes superoxide dismutase (SOD), catalase (CAT), peroxidase (POX) and phenylalanine ammonia-lyase (PAL) were quantified (at 24, 48, 72, and 96 h). The strain TR10 (identified by polyphasic taxonomy as T. atroviride) showed one of... Mostrar Tudo |
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Thesagro: |
Azevém; Fungo; Pyricularia Oryzae; Semente. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03059naa a2200241 a 4500
001 2128605
005 2020-12-23
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.biocontrol.2020.104499$2DOI
100 1 $aVICTORIA ARELLANO, A. D.
245 $aSeeds coated with Trichoderma atroviride and soil amended with silicon improve the resistance of Lolium multiflorum against Pyricularia oryzae.$h[electronic resource]
260 $c2020
520 $aRyegrass (Lolium multiflorum L.) is a forage species with a high content of protein and good palatability and digestibility. In winter, it is frequently used in southern Brazil as feed for livestock. The high humidity in this region is propitious for gray leaf spot, a disease caused by Pyricularia oryzae, considered to be the region?s main biotic problem. In this study, we aimed to evaluate the effect of three types of management, namely seed coating with Trichoderma atroviride (T), application of silicon in the soil (Si), and combination of both treatments (TSi), to reduce the severity of gray leaf spot. In the first phase, the capacity of 10 native isolates of Trichoderma spp. were evaluated in vitro for direct inhibition of P. oryzae based on tests of dual cultures (DC), antibiosis for volatile (Vol), and non-volatile compounds (Nvol). In vivo trials involved the ability to induce resistance responses, such as quantifying severity (SEV) and number of lesions (NL) per cm2 of leaf area. In the second phase, the efficacy of T, Si, and TSi was tested under greenhouse conditions. The lesion expansion rate (LER), relative efficiency of infection (RIE), SEV and NL were measured (after inoculation with P. oryzae), and in parallel the activities of the enzymes superoxide dismutase (SOD), catalase (CAT), peroxidase (POX) and phenylalanine ammonia-lyase (PAL) were quantified (at 24, 48, 72, and 96 h). The strain TR10 (identified by polyphasic taxonomy as T. atroviride) showed one of the highest inhibition values in Vol (23%) and DC (35%). Plants from seeds treated with the strain TR10 had the lowest levels of SEV (5.5%) and NL (3), in contrast with the other strains according to analysis of variance. Under greenhouse conditions, significant differences (P <0.0001) were found for LER, RIE, NL and SEV in T, Si, and TSi concerning TE (control treatment). The defense response of T was related to the activities of CAT, POX, and PAL (mainly), while for Si, other mechanisms, which were not evaluated in this study, might have contributed to disease reduction, and TSi did not show an additive effect. The treatment of seeds with T. atroviride and the application of Si in the soil improved the resistance of L. multiforum against infection by P. oryzae.
650 $aAzevém
650 $aFungo
650 $aPyricularia Oryzae
650 $aSemente
700 1 $aSILVA, G. M. da
700 1 $aGUATIMOSIM, E.
700 1 $aDORNELES, K. da R.
700 1 $aMOREIRA, L. G.
700 1 $aDALLAGNOL, L. J.
773 $tBiological Control$gv. 154, 104499, Mar. 2021.
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Registro original: |
Embrapa Pecuária Sul (CPPSUL) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
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URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
04/02/2004 |
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Data da última atualização: |
06/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CHAVES, R. de Q.; CORRÊA, G. F. |
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Afiliação: |
ROSELENE DE QUEIROZ CHAVES, CNPAF; GILBERTO FERNANDES CORREA, UFU. |
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Título: |
Micronutrientes no sistema solo-Pinus caribaea Morelet em plantios apresentando amarelecimento das acículas e morte de plantas. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Revista Árvore, v. 27, n. 6, p. 769-778, nov./dez. 2003. |
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DOI: |
https://doi.org/10.1590/S0100-67622003000600003 |
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Idioma: |
Português |
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Conteúdo: |
Com o objetivo de contribuir no diagnóstico de causas que têm levado à morte precoce de pinheiros, verificada após amarelecimento e necrose progressiva das acículas, foi desenvolvido este estudo em áreas de cerrado, no oeste de Minas Gerais. Foram comparadas árvores de Pinus caribaea Morelet das variedades caribaea e hondurensis, plantadas entre 1977-82. Em cada local de amostragem coletou-se material de 20 árvores, sendo 10 com acículas amarelecidas e 10 normais. Foram coletados acículas e tecidos do xilema e floema de raízes, nos quais foram analisados os teores de Fe, Mn, Zn, Cu e B. A classe de solo dos sítios de estudo é Latossolo Amarelo ácrico típico. As amostras foram coletadas nas profundidades: 0-5, 5-10, 10-20, 20-40, 40-60, 60-80, 80-100, 100-150, 150-200, 200-250 e 250-300 cm, nas quais foram analisados os teores trocáveis de Fe, Mn, Zn, Cu e B. Os teores de Fe, Zn, Cu e B não diferiram significativamente entre acículas verdes e amarelecidas, enquanto os teores de Mn foram significativamente inferiores nestas. Observou-se também que os teores de Mn foram maiores no xilema e menores nas acículas das plantas anormais, ocorrendo o inverso nas plantas normais. Os sintomas visuais, confirmados pelos resultados analíticos, revelam haver deficiência de manganês no sistema solo-planta estudado. |
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Palavras-Chave: |
Área de cerrado; Pinus tropical. |
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Thesagro: |
Cerrado; Deficiência Nutricional; Pinus Caribaea; Reflorestamento; Relação Solo-Planta. |
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Thesaurus NAL: |
Plant micronutrients; Soil-plant interactions; Tropical wood. |
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Categoria do assunto: |
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K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/214354/1/ra-2003.pdf
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Marc: |
LEADER 02192naa a2200265 a 4500
001 1214354
005 2022-05-06
008 2003 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/S0100-67622003000600003$2DOI
100 1 $aCHAVES, R. de Q.
245 $aMicronutrientes no sistema solo-Pinus caribaea Morelet em plantios apresentando amarelecimento das acículas e morte de plantas.
260 $c2003
520 $aCom o objetivo de contribuir no diagnóstico de causas que têm levado à morte precoce de pinheiros, verificada após amarelecimento e necrose progressiva das acículas, foi desenvolvido este estudo em áreas de cerrado, no oeste de Minas Gerais. Foram comparadas árvores de Pinus caribaea Morelet das variedades caribaea e hondurensis, plantadas entre 1977-82. Em cada local de amostragem coletou-se material de 20 árvores, sendo 10 com acículas amarelecidas e 10 normais. Foram coletados acículas e tecidos do xilema e floema de raízes, nos quais foram analisados os teores de Fe, Mn, Zn, Cu e B. A classe de solo dos sítios de estudo é Latossolo Amarelo ácrico típico. As amostras foram coletadas nas profundidades: 0-5, 5-10, 10-20, 20-40, 40-60, 60-80, 80-100, 100-150, 150-200, 200-250 e 250-300 cm, nas quais foram analisados os teores trocáveis de Fe, Mn, Zn, Cu e B. Os teores de Fe, Zn, Cu e B não diferiram significativamente entre acículas verdes e amarelecidas, enquanto os teores de Mn foram significativamente inferiores nestas. Observou-se também que os teores de Mn foram maiores no xilema e menores nas acículas das plantas anormais, ocorrendo o inverso nas plantas normais. Os sintomas visuais, confirmados pelos resultados analíticos, revelam haver deficiência de manganês no sistema solo-planta estudado.
650 $aPlant micronutrients
650 $aSoil-plant interactions
650 $aTropical wood
650 $aCerrado
650 $aDeficiência Nutricional
650 $aPinus Caribaea
650 $aReflorestamento
650 $aRelação Solo-Planta
653 $aÁrea de cerrado
653 $aPinus tropical
700 1 $aCORRÊA, G. F.
773 $tRevista Árvore$gv. 27, n. 6, p. 769-778, nov./dez. 2003.
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Embrapa Arroz e Feijão (CNPAF) |
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