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Registro Completo |
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
29/06/2007 |
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Data da última atualização: |
03/01/2024 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
BARRETO, A. L. H.; ELOY, Y. R. G.; MATOS, T. E. de; MARTINS-MIRANDA, A. S.; FREIRE, F. C. O.; FREIRE FILHO, F. R.; VASCONCELOS, I. M.; OLIVEIRA, J. T. A. |
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Título: |
Host defense responses restricts the growth of the fungus Colletotrichum lindemuthianum in cowpea, TE 97 411-1E resistant genotype. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
In: CONGRESSO NACIONAL DE FEIJÃO-CAUPI, 1.; REUNIÃO NACIONAL DE FEIJÃO-CAUPI, 6., 2006, Teresina. Tecnologias para o agronegócio: anais. Teresina: Embrapa Meio-Norte, 2006. |
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Descrição Física: |
1 CD-ROM. |
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Série: |
(Embrapa Meio-Norte. Documentos, 121). |
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Idioma: |
Inglês |
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Conteúdo: |
Cowpea is the main subsistence crop in the semiarid North-east of Brazil. However, very few is known concerning to its defense mechanisms against fungi. The objective of this present work was to evaluate the infection strategies of the hemibiotrophic fungi Colletotrichum lindemuthianum and the associated cytological defense responses of two cowpea genotypes, TE 97-411-1E (resistant) and BR 3 Tracuateua (susceptible). The infection process of the fungi in both genotypes occurred preferentially through the leaf epidermal cells by penetration tubes emerged from appressoria. The resistant cowpea genotype, TE 97-411-1E, showed enhanced penetration resistance to C. lindemuthianum associated with higher epidermal H2O2 accumulation, papilla formation, and increase in phenylalanine ammonialyase activity, possibly related to accumulation of phenolic compounds and host cell wall lignification. Macroscopic examination of the primary leaves revealed the presence of shrunken necrotic lesions characteristic of anthracnose in infected BR 3 Tracuateua, whereas in TE 97-411-1E cell death was also observed but only in a reduced percentage of the infection sites. In summary the results obtained in the present study suggested that TE 97-411-1E genotype is more resistant to C. lindemuthianum compared to BR 3 Tracuateua, as it developed more effective defense responses against the establishment of the pathogen. |
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Palavras-Chave: |
Colletotricum lindemuthianum; Feijão-caupi; Infection process; Processo de infecção. |
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Thesagro: |
Colletotrichum Lindemuthianum; Vigna Unguiculata. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/94327/1/FS12.pdf
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Marc: |
LEADER 02497nam a2200289 a 4500
001 1068871
005 2024-01-03
008 2006 bl uuuu u00u1 u #d
100 1 $aBARRETO, A. L. H.
245 $aHost defense responses restricts the growth of the fungus Colletotrichum lindemuthianum in cowpea, TE 97 411-1E resistant genotype.$h[electronic resource]
260 $aIn: CONGRESSO NACIONAL DE FEIJÃO-CAUPI, 1.; REUNIÃO NACIONAL DE FEIJÃO-CAUPI, 6., 2006, Teresina. Tecnologias para o agronegócio: anais. Teresina: Embrapa Meio-Norte$c2006
300 $c1 CD-ROM.
490 $a(Embrapa Meio-Norte. Documentos, 121).
520 $aCowpea is the main subsistence crop in the semiarid North-east of Brazil. However, very few is known concerning to its defense mechanisms against fungi. The objective of this present work was to evaluate the infection strategies of the hemibiotrophic fungi Colletotrichum lindemuthianum and the associated cytological defense responses of two cowpea genotypes, TE 97-411-1E (resistant) and BR 3 Tracuateua (susceptible). The infection process of the fungi in both genotypes occurred preferentially through the leaf epidermal cells by penetration tubes emerged from appressoria. The resistant cowpea genotype, TE 97-411-1E, showed enhanced penetration resistance to C. lindemuthianum associated with higher epidermal H2O2 accumulation, papilla formation, and increase in phenylalanine ammonialyase activity, possibly related to accumulation of phenolic compounds and host cell wall lignification. Macroscopic examination of the primary leaves revealed the presence of shrunken necrotic lesions characteristic of anthracnose in infected BR 3 Tracuateua, whereas in TE 97-411-1E cell death was also observed but only in a reduced percentage of the infection sites. In summary the results obtained in the present study suggested that TE 97-411-1E genotype is more resistant to C. lindemuthianum compared to BR 3 Tracuateua, as it developed more effective defense responses against the establishment of the pathogen.
650 $aColletotrichum Lindemuthianum
650 $aVigna Unguiculata
653 $aColletotricum lindemuthianum
653 $aFeijão-caupi
653 $aInfection process
653 $aProcesso de infecção
700 1 $aELOY, Y. R. G.
700 1 $aMATOS, T. E. de
700 1 $aMARTINS-MIRANDA, A. S.
700 1 $aFREIRE, F. C. O.
700 1 $aFREIRE FILHO, F. R.
700 1 $aVASCONCELOS, I. M.
700 1 $aOLIVEIRA, J. T. A.
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Registro original: |
Embrapa Meio-Norte (CPAMN) |
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Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
08/02/2008 |
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Data da última atualização: |
14/01/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
BUENO, R. C. O. de F.; CARNEIRO, T. R.; PRATISSOLI, D.; BUENO, A. de F.; FERNANDES, O. F. |
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Afiliação: |
REGIANE CRISTINA OLIVEIRA DE FREITAS BUENO, ESALQ; TATIANA RODRIGUES CARNEIRO, UNESP; DIRCEU PRATISSOLI, CCA/UFES; ADENEY DE FREITAS BUENO, CNPSO; ODAIR APARECIDO FERNANDES, UNESP. |
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Título: |
Biology and thermal requirements of Telenomus remus reared on fall armyworm Spodoptera frugiperda eggs. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Ciência Rural, Santa Maria, v. 38, n. 1, p.1-6, jan./fev. 2008. |
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ISSN: |
0103-8478 |
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DOI: |
http://dx.doi.org/10.1590/S0103-84782008000100001 |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT: This research aimed at studing Telenomus remus Nixon biology reared on Spodoptera frugiperda (J.E. Smith) eggs at different temperatures. Based on the development of the cycle (egg-adult), the thermal requirements and the number of parasitoid generations at constant temperatures were determined. Initially, 24-hour-old S. frugiperda eggs were submitted to parasitism by T. remus during 5 h, being then transferred to acclimatized chambers regulated at 15, 20, 25, 28, 31, and 35°C. The cycle (egg to adult) was influenced by temperature varying from 8.3±0.01 to 47.2±0.01 for females and 8.1±0.01 to 46.8±0.01 days for males at 31 and 15°C, respectively. The emergency (%) was also influenced by temperature. A reduction in emergency was observed at 15°C and no emergency at 35°C. T. remus sex ratio was not influenced by temperature. Sexual rate was not changed by temperature. Regarding to thermal requirements, thermal constant (K) and inferior thermal threshold (Tb) were higher for T. remus females (158.88 degree-days and 12.5°C) when compared to males (154.12 degree-days and 12.6°C). The estimated number of T. remus generation per year for males and females at laboratory conditions was 5.6 and 5.6, 16.9 and 17.3, 28.3 and 29.0, 35.1 and 36.0, 39.6 and 40.7 at 15, 20, 25, 28, and 31oC, respectively. RESUMO: Este trabalho teve como objetivo estudar a biologia de Telenomus remus Nixon criado em ovos de Spodoptera frugiperda (J.E. Smith) em diferentes temperaturas. Com base no desenvolvimento do ciclo (ovo-adulto), foram determinados as exigências térmicas e o número de gerações dos parasitóides em temperaturas constantes. Inicialmente, ovos de S. frugiperda, com 24 horas de idade, foram submetidos ao parasitismo por T. remus, durante cinco horas, sendo então transferidos para câmaras climatizadas reguladas para as temperaturas de 15, 20, 25, 28, 31 e 35°C. A duração do ciclo (ovo-adulto) foi influenciada pela temperatura variando de 8,3±0,01 a 47,2±0,01 dias para fêmeas e 8,1±0,01 a 46,8±0,01 dias para machos de T. remus nas temperaturas de 31 e 15°C, respectivamente. A porcentagem de emergência (viabilidade) de T. remus em ovos de S. frugiperda também foi influenciada pela variação da temperatura, apresentando redução significativa apenas nas temperaturas extremas. Foi observada redução na viabilidade a 15°C e não houve desenvolvimento biológico do parasitóide a 35°C. A razão sexual de T. remus não sofreu influência da temperatura. Em relação às exigências térmicas, a constante térmica (K) e temperatura base (Tb) foram maiores para as fêmeas de T. remus (158,88 graus dias e 12,52°C) quando comparadas aos machos (154,12 graus dias e 12,59°C). A estimativa do número de gerações anuais para T. remus para machos e fêmeas em condições de laboratório foi respectivamente 5,6 e 5,6; 16,9 e 17,3; 28,3 e 29,0; 35,1 e 36,0; 39,6 e 40,7 nas temperaturas de 15, 20, 25, 28 e 31°C. MenosABSTRACT: This research aimed at studing Telenomus remus Nixon biology reared on Spodoptera frugiperda (J.E. Smith) eggs at different temperatures. Based on the development of the cycle (egg-adult), the thermal requirements and the number of parasitoid generations at constant temperatures were determined. Initially, 24-hour-old S. frugiperda eggs were submitted to parasitism by T. remus during 5 h, being then transferred to acclimatized chambers regulated at 15, 20, 25, 28, 31, and 35°C. The cycle (egg to adult) was influenced by temperature varying from 8.3±0.01 to 47.2±0.01 for females and 8.1±0.01 to 46.8±0.01 days for males at 31 and 15°C, respectively. The emergency (%) was also influenced by temperature. A reduction in emergency was observed at 15°C and no emergency at 35°C. T. remus sex ratio was not influenced by temperature. Sexual rate was not changed by temperature. Regarding to thermal requirements, thermal constant (K) and inferior thermal threshold (Tb) were higher for T. remus females (158.88 degree-days and 12.5°C) when compared to males (154.12 degree-days and 12.6°C). The estimated number of T. remus generation per year for males and females at laboratory conditions was 5.6 and 5.6, 16.9 and 17.3, 28.3 and 29.0, 35.1 and 36.0, 39.6 and 40.7 at 15, 20, 25, 28, and 31oC, respectively. RESUMO: Este trabalho teve como objetivo estudar a biologia de Telenomus remus Nixon criado em ovos de Spodoptera frugiperda (J.E. Smith) em diferentes temperaturas. Com base no... Mostrar Tudo |
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Palavras-Chave: |
Graus-dia; Manejo integrado de pragas; Parasitóides de ovos. |
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Thesagro: |
Controle Biológico. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/95184/1/Biology-and-thermal-requirements-of-Telenomus-remus-reared-on-fall-armyworm-Spodoptera-frugiperda-eggs.pdf
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Marc: |
LEADER 03746naa a2200241 a 4500
001 1460723
005 2014-01-14
008 2008 bl uuuu u00u1 u #d
022 $a0103-8478
024 7 $ahttp://dx.doi.org/10.1590/S0103-84782008000100001$2DOI
100 1 $aBUENO, R. C. O. de F.
245 $aBiology and thermal requirements of Telenomus remus reared on fall armyworm Spodoptera frugiperda eggs.
260 $c2008
520 $aABSTRACT: This research aimed at studing Telenomus remus Nixon biology reared on Spodoptera frugiperda (J.E. Smith) eggs at different temperatures. Based on the development of the cycle (egg-adult), the thermal requirements and the number of parasitoid generations at constant temperatures were determined. Initially, 24-hour-old S. frugiperda eggs were submitted to parasitism by T. remus during 5 h, being then transferred to acclimatized chambers regulated at 15, 20, 25, 28, 31, and 35°C. The cycle (egg to adult) was influenced by temperature varying from 8.3±0.01 to 47.2±0.01 for females and 8.1±0.01 to 46.8±0.01 days for males at 31 and 15°C, respectively. The emergency (%) was also influenced by temperature. A reduction in emergency was observed at 15°C and no emergency at 35°C. T. remus sex ratio was not influenced by temperature. Sexual rate was not changed by temperature. Regarding to thermal requirements, thermal constant (K) and inferior thermal threshold (Tb) were higher for T. remus females (158.88 degree-days and 12.5°C) when compared to males (154.12 degree-days and 12.6°C). The estimated number of T. remus generation per year for males and females at laboratory conditions was 5.6 and 5.6, 16.9 and 17.3, 28.3 and 29.0, 35.1 and 36.0, 39.6 and 40.7 at 15, 20, 25, 28, and 31oC, respectively. RESUMO: Este trabalho teve como objetivo estudar a biologia de Telenomus remus Nixon criado em ovos de Spodoptera frugiperda (J.E. Smith) em diferentes temperaturas. Com base no desenvolvimento do ciclo (ovo-adulto), foram determinados as exigências térmicas e o número de gerações dos parasitóides em temperaturas constantes. Inicialmente, ovos de S. frugiperda, com 24 horas de idade, foram submetidos ao parasitismo por T. remus, durante cinco horas, sendo então transferidos para câmaras climatizadas reguladas para as temperaturas de 15, 20, 25, 28, 31 e 35°C. A duração do ciclo (ovo-adulto) foi influenciada pela temperatura variando de 8,3±0,01 a 47,2±0,01 dias para fêmeas e 8,1±0,01 a 46,8±0,01 dias para machos de T. remus nas temperaturas de 31 e 15°C, respectivamente. A porcentagem de emergência (viabilidade) de T. remus em ovos de S. frugiperda também foi influenciada pela variação da temperatura, apresentando redução significativa apenas nas temperaturas extremas. Foi observada redução na viabilidade a 15°C e não houve desenvolvimento biológico do parasitóide a 35°C. A razão sexual de T. remus não sofreu influência da temperatura. Em relação às exigências térmicas, a constante térmica (K) e temperatura base (Tb) foram maiores para as fêmeas de T. remus (158,88 graus dias e 12,52°C) quando comparadas aos machos (154,12 graus dias e 12,59°C). A estimativa do número de gerações anuais para T. remus para machos e fêmeas em condições de laboratório foi respectivamente 5,6 e 5,6; 16,9 e 17,3; 28,3 e 29,0; 35,1 e 36,0; 39,6 e 40,7 nas temperaturas de 15, 20, 25, 28 e 31°C.
650 $aControle Biológico
653 $aGraus-dia
653 $aManejo integrado de pragas
653 $aParasitóides de ovos
700 1 $aCARNEIRO, T. R.
700 1 $aPRATISSOLI, D.
700 1 $aBUENO, A. de F.
700 1 $aFERNANDES, O. F.
773 $tCiência Rural, Santa Maria$gv. 38, n. 1, p.1-6, jan./fev. 2008.
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