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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
03/12/2021 |
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Data da última atualização: |
11/04/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FERREIRA, S. da C.; NAKASONE, A. K.; NASCIMENTO, S. M. C. do; OLIVEIRA, D. A. de; SIQUEIRA, A. S.; CUNHA, E. F. M.; CASTRO, G. L. S. de; SOUZA, C. R. B. de. |
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Afiliação: |
SOLANGE DA CUNHA FERREIRA, UFPA / UFRA; ALESSANDRA KEIKO NAKASONE, CPATU; SILVIA MARA COELHO DO NASCIMENTO, UFLA; DANYLLO AMARAL DE OLIVEIRA, UFPA / UFRA; ANDREI SANTOS SIQUEIRA, UFPA; ELISA FERREIRA MOURA CUNHA, CPATU; GLEDSON LUIZ SALGADO DE CASTRO, UFRA; CLÁUDIA REGINA BATISTA DE SOUZA, UFPA. |
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Título: |
Isolation and characterization of cassava root endophytic bacteria with the ability to promote plant growth and control the in vitro and in vivo growth of Phytopythium sp. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Physiological and Molecular Plant Pathology, v. 116, Article 101709, Dec. 2021. |
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DOI: |
https://doi.org/10.1016/j.pmpp.2021.101709 |
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Idioma: |
Inglês |
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Conteúdo: |
Among the biotic factors affecting the production of cassava (Manihot esculenta Crantz), root rot is one of the most severe diseases worldwide. In Brazil, one of the principal limitations for cassava production, mainly in the Amazon region, is soft root rot disease, which may be caused by Phytopythium sp. On the other hand, microorganisms beneficial to plants, such as plant growth-promoting bacterial endophytes, have been progressively used to replace chemical pesticides and industrial fertilizers, which can drastically contaminate the environment. Thus, our main aim here was to isolate and characterize endophytic bacteria associated with roots of cassava, regarding their ability to control the growth of Phytopythium sp. and promote plant growth. A total of 21 endophytic bacteria that showed distinct abilities to solubilize calcium phosphate, synthesize indol acetic acid and siderophores, were isolated. Among them, 6 isolates belonging to the genus Bacillus (B. aryabhattai, B. velezensis and B. cereus) and 1 other isolate, Klebsiella pneumonia, were identified based on their 16S rRNA gene sequences. B. velezensis isolate 21Y and B. aryabhattai isolates 4W and 23Y were able to inhibit the in vitro and in vivo growth of Phytopythium sp. Cassava plants inoculated with B. cereus isolate 15Y and B. aryabhattai isolates 4W, 16Y and 23Y by irrigation of substrate and foliar spray showed increased biomass. In addition, increased biomass was observed in cowpea plants generated from seeds microbiolized with B. aryabhattai isolates 23Y and 4W. Thus, our findings may contribute to sustainable agriculture, since they revealed cassava endophytic bacteria able to promote plant growth, as well as inhibiting growth of the pathogen that causes soft root rot of cassava in the Amazon region. MenosAmong the biotic factors affecting the production of cassava (Manihot esculenta Crantz), root rot is one of the most severe diseases worldwide. In Brazil, one of the principal limitations for cassava production, mainly in the Amazon region, is soft root rot disease, which may be caused by Phytopythium sp. On the other hand, microorganisms beneficial to plants, such as plant growth-promoting bacterial endophytes, have been progressively used to replace chemical pesticides and industrial fertilizers, which can drastically contaminate the environment. Thus, our main aim here was to isolate and characterize endophytic bacteria associated with roots of cassava, regarding their ability to control the growth of Phytopythium sp. and promote plant growth. A total of 21 endophytic bacteria that showed distinct abilities to solubilize calcium phosphate, synthesize indol acetic acid and siderophores, were isolated. Among them, 6 isolates belonging to the genus Bacillus (B. aryabhattai, B. velezensis and B. cereus) and 1 other isolate, Klebsiella pneumonia, were identified based on their 16S rRNA gene sequences. B. velezensis isolate 21Y and B. aryabhattai isolates 4W and 23Y were able to inhibit the in vitro and in vivo growth of Phytopythium sp. Cassava plants inoculated with B. cereus isolate 15Y and B. aryabhattai isolates 4W, 16Y and 23Y by irrigation of substrate and foliar spray showed increased biomass. In addition, increased biomass was observed in cowpea plants generated from s... Mostrar Tudo |
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Thesagro: |
Mandioca; Manihot Esculenta. |
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Thesaurus Nal: |
Cassava. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02693naa a2200253 a 4500
001 2137101
005 2022-04-11
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.pmpp.2021.101709$2DOI
100 1 $aFERREIRA, S. da C.
245 $aIsolation and characterization of cassava root endophytic bacteria with the ability to promote plant growth and control the in vitro and in vivo growth of Phytopythium sp.$h[electronic resource]
260 $c2021
520 $aAmong the biotic factors affecting the production of cassava (Manihot esculenta Crantz), root rot is one of the most severe diseases worldwide. In Brazil, one of the principal limitations for cassava production, mainly in the Amazon region, is soft root rot disease, which may be caused by Phytopythium sp. On the other hand, microorganisms beneficial to plants, such as plant growth-promoting bacterial endophytes, have been progressively used to replace chemical pesticides and industrial fertilizers, which can drastically contaminate the environment. Thus, our main aim here was to isolate and characterize endophytic bacteria associated with roots of cassava, regarding their ability to control the growth of Phytopythium sp. and promote plant growth. A total of 21 endophytic bacteria that showed distinct abilities to solubilize calcium phosphate, synthesize indol acetic acid and siderophores, were isolated. Among them, 6 isolates belonging to the genus Bacillus (B. aryabhattai, B. velezensis and B. cereus) and 1 other isolate, Klebsiella pneumonia, were identified based on their 16S rRNA gene sequences. B. velezensis isolate 21Y and B. aryabhattai isolates 4W and 23Y were able to inhibit the in vitro and in vivo growth of Phytopythium sp. Cassava plants inoculated with B. cereus isolate 15Y and B. aryabhattai isolates 4W, 16Y and 23Y by irrigation of substrate and foliar spray showed increased biomass. In addition, increased biomass was observed in cowpea plants generated from seeds microbiolized with B. aryabhattai isolates 23Y and 4W. Thus, our findings may contribute to sustainable agriculture, since they revealed cassava endophytic bacteria able to promote plant growth, as well as inhibiting growth of the pathogen that causes soft root rot of cassava in the Amazon region.
650 $aCassava
650 $aMandioca
650 $aManihot Esculenta
700 1 $aNAKASONE, A. K.
700 1 $aNASCIMENTO, S. M. C. do
700 1 $aOLIVEIRA, D. A. de
700 1 $aSIQUEIRA, A. S.
700 1 $aCUNHA, E. F. M.
700 1 $aCASTRO, G. L. S. de
700 1 $aSOUZA, C. R. B. de
773 $tPhysiological and Molecular Plant Pathology$gv. 116, Article 101709, Dec. 2021.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
18/12/2018 |
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Data da última atualização: |
18/12/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 4 |
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Autoria: |
RODRIGUESA, V. da S.; BONATE JUNIOR, P.; GARCIA, M. V.; HIGA, L. de O. S.; PIÑA, F. T. B.; ZIMMERMANND, N. P.; DUARTE, P. O.; BARROS, J. C.; ANDREOTTI, R. |
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Afiliação: |
Vinicius da Silva Rodrigues, Pós-Graduação em Doenças Infecciosas e Parasitárias/Faculdade de Medicina/Universidade Federal Mato Grosso do Sul - UFMS; Paulino Bonatte Jr, Pós-Graduação em Ciência Animal/Faculdade de Medicina Veterinária/Universidade Federal Mato Grosso do Sul - Pós-Graduação em Ciência Animal, Faculdade de Medicina Veterinária/Universidade Federal Mato Grosso do Sul - UFMS; Marcos Valério Garcia, Laboratório de Biologia do Carrapato/Embrapa Gado de Corte; Leandro de Oliveira Souza Higa, Pós-Graduação em Doenças Infecciosas e Parasitárias/Faculdade de Medicina/Universidade Federal Mato Grosso do Sul - UFMS; Francisco Tobias Barradas Piña, Pós-Graduação em Doenças Infecciosas e Parasitárias/Faculdade de Medicina/Universidade Federal Mato Grosso do Sul - UFMS; Namor Pinheiro Zimmermannd, Centro Universitário da Grande Dourados; Pâmella Oliveira Duarte, Pós-Graduação em Doenças Infecciosas e Parasitárias/Faculdade de Medicina/Universidade Federal Mato Grosso do Sul - UFMS; JACQUELINE CAVALCANTE BARROS, CNPGC; RENATO ANDREOTTI E SILVA, CNPGC. |
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Título: |
Efficacy profile of Cypermethrin and Chlorpyrifos based acaricides on Rhipicephalus microplus control on cattle in the rearing phase, naturally infested and exposed to tick fever agents in central Brazil. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Veterinary Parasitology: Regional Studies and Reports, v. 12, p. 43?48, 2018 |
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DOI: |
doi.org/10.1016/j.vprsr.2018.02.001 |
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Idioma: |
Português |
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Conteúdo: |
The objective of this work was to evaluate the efficacy of two cypermethrin- and chlorpyrifos-based acaricides in controlling Rhipicephalus microplus in a naturally infested bovine herd and in in vitro tests, as well as to monitor the animals for tick fever. Male bovines in the rearing phase were used, with 30 Brangus and 30 Nellore animals naturally infested. The groups were composed as follows: 15 Nellore treated, 15 Nellore control, 15 Brangus treated and 15 Brangus control. Every 18 days, the animals were monitored for tick count, acaricide treatment, weight, blood pack cell volume, and clinical signs. For in vitro tests, the larval packet test, adult immersion test and DNA amplification for tick fever diagnosis were performed. In the first animal treatment period, product 1 (cypermethrin, 15 g+chlorpyrifos, 25 g+citronellal, 1 g) was used; in the second period, product 2 (cypermethrin, 15 g+chlorpyrifos, 30 g+fenthion, 15 g) was used. In Brangus animals, the mean efficacy was 35.1% and 95.8% in the first and second periods, respectively, for the same animals. For Nellore animals, the efficacy in periods one and two was 51% and 97.1%, respectively. The in vitro results showed efficacy above 95% for the two challenged acaricides. The Brangus animals showed a high production of ticks associated with the presence of tick fever agents, which could generate risks for the disease's enzootic stability. |
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Palavras-Chave: |
Resistance Control. |
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Thesaurus NAL: |
Acaricides; Cattle; Ticks. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/188775/1/31-Efficacy-profile-of-Cypermethrin-and-Chlorpyrifos-based-acaricides-on.pdf
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Marc: |
LEADER 02375naa a2200277 a 4500
001 2101911
005 2018-12-18
008 2018 bl uuuu u00u1 u #d
024 7 $adoi.org/10.1016/j.vprsr.2018.02.001$2DOI
100 1 $aRODRIGUESA, V. da S.
245 $aEfficacy profile of Cypermethrin and Chlorpyrifos based acaricides on Rhipicephalus microplus control on cattle in the rearing phase, naturally infested and exposed to tick fever agents in central Brazil.$h[electronic resource]
260 $c2018
520 $aThe objective of this work was to evaluate the efficacy of two cypermethrin- and chlorpyrifos-based acaricides in controlling Rhipicephalus microplus in a naturally infested bovine herd and in in vitro tests, as well as to monitor the animals for tick fever. Male bovines in the rearing phase were used, with 30 Brangus and 30 Nellore animals naturally infested. The groups were composed as follows: 15 Nellore treated, 15 Nellore control, 15 Brangus treated and 15 Brangus control. Every 18 days, the animals were monitored for tick count, acaricide treatment, weight, blood pack cell volume, and clinical signs. For in vitro tests, the larval packet test, adult immersion test and DNA amplification for tick fever diagnosis were performed. In the first animal treatment period, product 1 (cypermethrin, 15 g+chlorpyrifos, 25 g+citronellal, 1 g) was used; in the second period, product 2 (cypermethrin, 15 g+chlorpyrifos, 30 g+fenthion, 15 g) was used. In Brangus animals, the mean efficacy was 35.1% and 95.8% in the first and second periods, respectively, for the same animals. For Nellore animals, the efficacy in periods one and two was 51% and 97.1%, respectively. The in vitro results showed efficacy above 95% for the two challenged acaricides. The Brangus animals showed a high production of ticks associated with the presence of tick fever agents, which could generate risks for the disease's enzootic stability.
650 $aAcaricides
650 $aCattle
650 $aTicks
653 $aResistance Control
700 1 $aBONATE JUNIOR, P.
700 1 $aGARCIA, M. V.
700 1 $aHIGA, L. de O. S.
700 1 $aPIÑA, F. T. B.
700 1 $aZIMMERMANND, N. P.
700 1 $aDUARTE, P. O.
700 1 $aBARROS, J. C.
700 1 $aANDREOTTI, R.
773 $tVeterinary Parasitology: Regional Studies and Reports$gv. 12, p. 43?48, 2018
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Embrapa Gado de Corte (CNPGC) |
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