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 | Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com cnpms.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
03/02/2025 |
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Data da última atualização: |
13/05/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MARINS, M. S.; GUIMARÃES, R. A.; FIGUEIREDO, J. E. F.; ALVES, T. H. P.; DINIZ, G. de F. D.; COTA, L. V.; OLIVEIRA-PAIVA, C. A.; PFENNING, L. H. |
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Afiliação: |
MIKAELY SOUSA MARINS, UNIVERSIDADE FEDERAL DE LAVRAS; RAFAELA ARAÚJO GUIMARÃES, UNIVERSIDADE FEDERAL DE LAVRAS; JOSE EDSON FONTES FIGUEIREDO, CNPMS; TALLES HENRIQUE PEREIRA ALVES, UNIVERSIDADE FEDERAL DE SÃO JOÃO DEL-REI; GISELE DE FÁTIMA DIAS DINIZ; LUCIANO VIANA COTA, CNPMS; CHRISTIANE ABREU DE OLIVEIRA PAIVA, CNPMS; LUDWIG HEINRICH PFENNING, UNIVERSIDADE FEDERAL DE LAVRAS. |
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Título: |
Paenibacillus polymyxa improves glutathione reductase activity and reduces Fusarium verticillioides incidence in maize grains. |
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Ano de publicação: |
2025 |
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Fonte/Imprenta: |
BioControl, v. 70, p. 271-283, 2025. |
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DOI: |
https://doi.org/10.1007/s10526-024-10302-0 |
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Idioma: |
Inglês |
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Conteúdo: |
Fusarium verticillioides (Hypocreales: Nectriaceae) infects maize, causing stalk rot disease and producing toxins that accumulate in grains. The antifungal activity of seven strains of Paenibacillus polymyxa (Bacillales: Paenibacillaceae) against F. verticillioides was evaluated in vitro using the microbiological growth media potato dextrose agar, malt extract agar, and crushed maize grains. The strain LIS03, which demonstrated the strongest antagonistic activity, was selected for further investigation based on its ability to reduce the severity of stalk rot disease and induce plant-defense enzymes in maize. In the greenhouse, seed inoculation and plant spraying (V4 phenological stage) with LIS03 prior to F. verticillioides injection in the stem were evaluated regarding the activity of phenylalanine ammonia-lyase (PAL) and glutathione reductase (GR) in maize leaves. PAL activity significantly increased in plants inoculated with LIS03 at three and nine days post-inoculation (dpi). In contrast, plants simultaneously inoculated with LIS03 and the pathogen showed an increase of 82% in GR activity 12 dpi. Higher GR activity was correlated with reduced stalk rot severity at 6 dpi (r = - 0.53). In the field, the combination of seed inoculation followed by plant spraying, as well as plant spraying alone, resulted in a 33% reduction in disease severity. Only seed inoculation led to an 18.7% decrease. Although the grains did not show symptoms of fungal diseases in the field experiment, a culture-based blotter test revealed a high incidence of F. verticillioides. The blotter test also showed that grains from silks sprayed with LIS03 presented a reduction of 16% and 25% in the incidence of F. verticillioides in naturally infected and artificially inoculated plants, respectively. These results with P. polymyxa provide a promising avenue for developing biological control strategies for controlling maize diseases caused by F. verticillioides. MenosFusarium verticillioides (Hypocreales: Nectriaceae) infects maize, causing stalk rot disease and producing toxins that accumulate in grains. The antifungal activity of seven strains of Paenibacillus polymyxa (Bacillales: Paenibacillaceae) against F. verticillioides was evaluated in vitro using the microbiological growth media potato dextrose agar, malt extract agar, and crushed maize grains. The strain LIS03, which demonstrated the strongest antagonistic activity, was selected for further investigation based on its ability to reduce the severity of stalk rot disease and induce plant-defense enzymes in maize. In the greenhouse, seed inoculation and plant spraying (V4 phenological stage) with LIS03 prior to F. verticillioides injection in the stem were evaluated regarding the activity of phenylalanine ammonia-lyase (PAL) and glutathione reductase (GR) in maize leaves. PAL activity significantly increased in plants inoculated with LIS03 at three and nine days post-inoculation (dpi). In contrast, plants simultaneously inoculated with LIS03 and the pathogen showed an increase of 82% in GR activity 12 dpi. Higher GR activity was correlated with reduced stalk rot severity at 6 dpi (r = - 0.53). In the field, the combination of seed inoculation followed by plant spraying, as well as plant spraying alone, resulted in a 33% reduction in disease severity. Only seed inoculation led to an 18.7% decrease. Although the grains did not show symptoms of fungal diseases in the field experiment... Mostrar Tudo |
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Thesagro: |
Bactéria; Doença de Planta; Enzima; Fungo; Milho; Podridão. |
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Categoria do assunto: |
H Saúde e Patologia |
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Marc: |
null
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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| Registros recuperados : 5 | |
| 1. |  | POSSETTE, R. F. da S.; MIKICH, S. B.; HATSCHBACH, G.; RIBAS, O. S. Levantamento florístico e fenológico das espécies zoocóricas de remanescentes da Floresta Ombrófila Mista do Município de Colombo, Estado do Paraná, Brasil. In: EVENTO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA FLORESTAS, 3., 2004, Colombo. Anais. Colombo: Embrapa Florestas, 2004. 1 CD-ROM. (Embrapa Florestas. Documentos, 102). Resumo.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| 2. | | POSSETTE, R. F. da S.; MIKICH, S. B.; RIBAS, O. dos S.; HATSCHBACH, G. Levantamento florístico e fenológico em remanescentes de floresta ombrófila mista no município de Colombo, Paraná, Brasil. In: EVENTO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA FLORESTAS, 4., 2005, Colombo. Anais. Colombo: Embrapa Florestas, 2005. 1 CD-ROM (Embrapa Florestas. Documentos, 117). EVINCI. Resumo.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| 4. | | HEIDEN, G.; WASUM, R. A.; SCUR, L.; HATSCBBACH, G. G.; RIBAS, O. dos S.; BARBIERI, R. L. Espécies arbóreas da região de São Mateus do Sul. In: BARBIERI, R. L.; HEIDEN, G. (Ed.). Árvores de São Mateus do Sul e região. Pelotas: Embrapa Clima Temperado, Brasília, DF: Embrapa Informação Tecnológica, 2009. p. 70-348.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Clima Temperado. |
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| 5. | | POSSETTE, R. F. da S.; MIKICH, S. B.; HATSCHBACH, G. G.; RIBAS, O. dos S.; LIEBSCH, D. Floristic composition and dispersal syndromes in Araucaria Forest remnants in the municipality of Colombo, Paraná state, Brazil. Check List, v. 11, n. 5, article 1771, Oct. 2015. 14 p.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 3 |
| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 5 | |
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