|
|
Registro Completo |
Biblioteca(s): |
Embrapa Instrumentação. |
Data corrente: |
26/11/2009 |
Data da última atualização: |
16/07/2013 |
Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
Autoria: |
MALMONGE, J. A.; MEDEIROS, E. S.; ROSA, M. F.; WOOD, D.; MATTOSO, L. H. C. |
Afiliação: |
LUIZ HENRIQUE CAPPARELLI MATTOSO, CNPDIA. |
Título: |
Compósito de borracha natural proveniente da guayule reforçado com microfibras de celulose. |
Ano de publicação: |
2009 |
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE POLIMEROS, 10., 2009, Foz do Iguaçu, PR. Anais... São Carlos: ABPol , 2009. 1 CD-ROM. |
Idioma: |
Português |
Palavras-Chave: |
CONGRESSO. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/86117/1/proci-09.00092.PDF
|
Marc: |
LEADER 00547nam a2200157 a 4500 001 1576305 005 2013-07-16 008 2009 bl uuuu u00u1 u #d 100 1 $aMALMONGE, J. A. 245 $aCompósito de borracha natural proveniente da guayule reforçado com microfibras de celulose. 260 $aIn: CONGRESSO BRASILEIRO DE POLIMEROS, 10., 2009, Foz do Iguaçu, PR. Anais... São Carlos: ABPol , 2009. 1 CD-ROM.$c2009 653 $aCONGRESSO 700 1 $aMEDEIROS, E. S. 700 1 $aROSA, M. F. 700 1 $aWOOD, D. 700 1 $aMATTOSO, L. H. C.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Instrumentação (CNPDIA) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Recursos Genéticos e Biotecnologia. |
Data corrente: |
15/12/2016 |
Data da última atualização: |
06/12/2017 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
FARIA, M.; MARTINS, I.; SOUZA, D. A.; MASCARIN, G. M.; LOPES, R. B. |
Afiliação: |
MARCOS RODRIGUES DE FARIA, Cenargen; IRENE MARTINS, Cenargen; DANIELA AGUIAR DE SOUZA, Cenargen; GABRIEL MOURA MASCARIN, CNPAF; ROGERIO BIAGGIONI LOPES, Cenargen. |
Título: |
Susceptibility of the biocontrol fungi Metarhizium anisopliae and Trichoderma asperellum (Ascomycota: Hypocreales) to imbibitional damage is driven by conidial vigor. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
Biological Control, v. 107, p. 87-94, 2017. |
ISSN: |
1049-9644 |
DOI: |
10.1016/j.biocontrol.2017.01.015 |
Idioma: |
Inglês |
Conteúdo: |
Imbibition damage (ID) is a phenomenon characterized by the death of dehydrated conidia when immersed in water at temperatures ? ca. 25 °C, as a result of the transition in the conformation of the plasma membrane in the presence of free water. In the present study we evaluated the susceptibility to ID of eight major species or varieties of fungi used in biological control programs in several countries (Isaria farinosa, I. fumosorosea, I. javanica, Nomuraea rileyi, Pochonia chlamydosporia var. catenulata, P. chlamydosporia var. chlamydosporia, Purpureocillium lilacinum, and Trichoderma asperellum). A commercial isolate of Metarhizium anisopliae sensu stricto, known to be sensitive to ID, was also included. Within all tested taxa, significant reductions in germination of dehydrated conidia after immersion in cold water (15 °C) compared to immersion in warm water (33?37 °C) were reported, due to delayed germination and/or ID. Additional tests with dehydrated M. anisopliae and T. asperellum conidia produced on different substrates revealed that susceptibility to ID was greatly impacted by vigor (% dehydrated conidia with rapid germination). Low mortality (1?7%) of dehydrated conidia immersed in cold water was observed when vigor was ?95%. Conversely, mortality was ?20% when vigor ranged from 50 to 90%. We hypothesize that, in vigorous dehydrated conidia, the cell wall is capable of slowing down water influx, allowing rehydration of the cell membrane by water vapors before contact with free water, thus mitigating ID. The marked effect of conidial quality on susceptibility of M. anisopliae and T. asperellum to ID highlights the need for production and post-production procedures (drying, harvesting, formulation and packaging) that ensure high vigor of conidia used as active ingredients in mycopesticides with low water contents. MenosImbibition damage (ID) is a phenomenon characterized by the death of dehydrated conidia when immersed in water at temperatures ? ca. 25 °C, as a result of the transition in the conformation of the plasma membrane in the presence of free water. In the present study we evaluated the susceptibility to ID of eight major species or varieties of fungi used in biological control programs in several countries (Isaria farinosa, I. fumosorosea, I. javanica, Nomuraea rileyi, Pochonia chlamydosporia var. catenulata, P. chlamydosporia var. chlamydosporia, Purpureocillium lilacinum, and Trichoderma asperellum). A commercial isolate of Metarhizium anisopliae sensu stricto, known to be sensitive to ID, was also included. Within all tested taxa, significant reductions in germination of dehydrated conidia after immersion in cold water (15 °C) compared to immersion in warm water (33?37 °C) were reported, due to delayed germination and/or ID. Additional tests with dehydrated M. anisopliae and T. asperellum conidia produced on different substrates revealed that susceptibility to ID was greatly impacted by vigor (% dehydrated conidia with rapid germination). Low mortality (1?7%) of dehydrated conidia immersed in cold water was observed when vigor was ?95%. Conversely, mortality was ?20% when vigor ranged from 50 to 90%. We hypothesize that, in vigorous dehydrated conidia, the cell wall is capable of slowing down water influx, allowing rehydration of the cell membrane by water vapors before contac... Mostrar Tudo |
Palavras-Chave: |
Imbibitional damage; Mycopesticide. |
Thesagro: |
Controle biológico; Fungo entomogeno. |
Thesaurus NAL: |
Cell walls; Drying; Entomopathogenic fungi; Plasma membrane; Vigor. |
Categoria do assunto: |
O Insetos e Entomologia |
Marc: |
LEADER 02783naa a2200301 a 4500 001 2058691 005 2017-12-06 008 2017 bl uuuu u00u1 u #d 022 $a1049-9644 024 7 $a10.1016/j.biocontrol.2017.01.015$2DOI 100 1 $aFARIA, M. 245 $aSusceptibility of the biocontrol fungi Metarhizium anisopliae and Trichoderma asperellum (Ascomycota$bHypocreales) to imbibitional damage is driven by conidial vigor.$h[electronic resource] 260 $c2017 520 $aImbibition damage (ID) is a phenomenon characterized by the death of dehydrated conidia when immersed in water at temperatures ? ca. 25 °C, as a result of the transition in the conformation of the plasma membrane in the presence of free water. In the present study we evaluated the susceptibility to ID of eight major species or varieties of fungi used in biological control programs in several countries (Isaria farinosa, I. fumosorosea, I. javanica, Nomuraea rileyi, Pochonia chlamydosporia var. catenulata, P. chlamydosporia var. chlamydosporia, Purpureocillium lilacinum, and Trichoderma asperellum). A commercial isolate of Metarhizium anisopliae sensu stricto, known to be sensitive to ID, was also included. Within all tested taxa, significant reductions in germination of dehydrated conidia after immersion in cold water (15 °C) compared to immersion in warm water (33?37 °C) were reported, due to delayed germination and/or ID. Additional tests with dehydrated M. anisopliae and T. asperellum conidia produced on different substrates revealed that susceptibility to ID was greatly impacted by vigor (% dehydrated conidia with rapid germination). Low mortality (1?7%) of dehydrated conidia immersed in cold water was observed when vigor was ?95%. Conversely, mortality was ?20% when vigor ranged from 50 to 90%. We hypothesize that, in vigorous dehydrated conidia, the cell wall is capable of slowing down water influx, allowing rehydration of the cell membrane by water vapors before contact with free water, thus mitigating ID. The marked effect of conidial quality on susceptibility of M. anisopliae and T. asperellum to ID highlights the need for production and post-production procedures (drying, harvesting, formulation and packaging) that ensure high vigor of conidia used as active ingredients in mycopesticides with low water contents. 650 $aCell walls 650 $aDrying 650 $aEntomopathogenic fungi 650 $aPlasma membrane 650 $aVigor 650 $aControle biológico 650 $aFungo entomogeno 653 $aImbibitional damage 653 $aMycopesticide 700 1 $aMARTINS, I. 700 1 $aSOUZA, D. A. 700 1 $aMASCARIN, G. M. 700 1 $aLOPES, R. B. 773 $tBiological Control$gv. 107, p. 87-94, 2017.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|