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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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 | 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
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
26/11/2015 |
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Data da última atualização: |
22/03/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
FAGERIA, N. K.; SANTOS, A. B.; CARVALHO, M. C. S. |
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Afiliação: |
NAND KUMAR FAGERIA, CNPAF; ALBERTO BAETA DOS SANTOS, CNPAF; MARIA DA CONCEICAO SANTANA CARVALHO, CNPAF. |
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Título: |
Agronomic evaluation of phosphorus sources applied to upland and lowland rice. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Communications in Soil Science and Plant Analysis, New York, v. 46, n. 9, p. 1097-1111, 2015. |
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DOI: |
10.1080/00103624.2015.1018526 |
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Idioma: |
Inglês |
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Conteúdo: |
Rice is a staple food for more than 50 percent world?s population. It is mainly grown under two ecosystems, known as upland and lowland. Soils on which these two types of rice are grown are mostly deficient in phosphorus (P). Two field experiments were conducted (one with upland rice and another with lowland rice) with the objective to determine responses of upland and lowland rice to two sources of P fertilizers. The P sources were mono-ammonium phosphate and polymer coated mono-ammonium phosphate. The P rates used in the two experiments were 25, 50, 100, and 200 kg P2O5 ha−1 plus one control treatment. Plant height and grain yield of upland rice significantly increased with the addition of P fertilization. Similarly, plant height, straw yield, grain yield, panicle density, 1000-grain weight, P concentration, and uptake of lowland rice were significantly increased with the application of P fertilization. The response of these plant parameters to P fertilization was quadratic in nature. Rate of P for maximum growth, yield, and yield components varied for both upland and lowland rice. Maximum grain yield of upland rice was obtained with the addition of 108 kg phosphorus pentoxide (P2O5) ha−1 by mono-ammonium phosphate and 105 kg P2O5 ha−1 by polymer-coated mono-ammonium phosphate. Similarly, maximum grain yield of lowland rice was obtained with the addition of 143 kg P2O5 by mono-ammonium phosphate and 151 kg P2O5 by polymer-coated mono-ammonium phosphate. There were no significant differences between both the P sources for the growth, yield, and yield components of upland and lowland rice. Phosphorus-use efficiency defined in several ways decreased with increasing P rate in lowland rice. MenosRice is a staple food for more than 50 percent world?s population. It is mainly grown under two ecosystems, known as upland and lowland. Soils on which these two types of rice are grown are mostly deficient in phosphorus (P). Two field experiments were conducted (one with upland rice and another with lowland rice) with the objective to determine responses of upland and lowland rice to two sources of P fertilizers. The P sources were mono-ammonium phosphate and polymer coated mono-ammonium phosphate. The P rates used in the two experiments were 25, 50, 100, and 200 kg P2O5 ha−1 plus one control treatment. Plant height and grain yield of upland rice significantly increased with the addition of P fertilization. Similarly, plant height, straw yield, grain yield, panicle density, 1000-grain weight, P concentration, and uptake of lowland rice were significantly increased with the application of P fertilization. The response of these plant parameters to P fertilization was quadratic in nature. Rate of P for maximum growth, yield, and yield components varied for both upland and lowland rice. Maximum grain yield of upland rice was obtained with the addition of 108 kg phosphorus pentoxide (P2O5) ha−1 by mono-ammonium phosphate and 105 kg P2O5 ha−1 by polymer-coated mono-ammonium phosphate. Similarly, maximum grain yield of lowland rice was obtained with the addition of 143 kg P2O5 by mono-ammonium phosphate and 151 kg P2O5 by polymer-coated mono-ammonium phosphate. T... Mostrar Tudo |
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Thesagro: |
Arroz; Cerrado; Fósforo; Oryza sativa; Rendimento; Solo. |
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Thesaurus NAL: |
Grain yield; Rice; Soil; Yield components. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02520naa a2200277 a 4500
001 2029614
005 2016-03-22
008 2015 bl uuuu u00u1 u #d
024 7 $a10.1080/00103624.2015.1018526$2DOI
100 1 $aFAGERIA, N. K.
245 $aAgronomic evaluation of phosphorus sources applied to upland and lowland rice.$h[electronic resource]
260 $c2015
520 $aRice is a staple food for more than 50 percent world?s population. It is mainly grown under two ecosystems, known as upland and lowland. Soils on which these two types of rice are grown are mostly deficient in phosphorus (P). Two field experiments were conducted (one with upland rice and another with lowland rice) with the objective to determine responses of upland and lowland rice to two sources of P fertilizers. The P sources were mono-ammonium phosphate and polymer coated mono-ammonium phosphate. The P rates used in the two experiments were 25, 50, 100, and 200 kg P2O5 ha−1 plus one control treatment. Plant height and grain yield of upland rice significantly increased with the addition of P fertilization. Similarly, plant height, straw yield, grain yield, panicle density, 1000-grain weight, P concentration, and uptake of lowland rice were significantly increased with the application of P fertilization. The response of these plant parameters to P fertilization was quadratic in nature. Rate of P for maximum growth, yield, and yield components varied for both upland and lowland rice. Maximum grain yield of upland rice was obtained with the addition of 108 kg phosphorus pentoxide (P2O5) ha−1 by mono-ammonium phosphate and 105 kg P2O5 ha−1 by polymer-coated mono-ammonium phosphate. Similarly, maximum grain yield of lowland rice was obtained with the addition of 143 kg P2O5 by mono-ammonium phosphate and 151 kg P2O5 by polymer-coated mono-ammonium phosphate. There were no significant differences between both the P sources for the growth, yield, and yield components of upland and lowland rice. Phosphorus-use efficiency defined in several ways decreased with increasing P rate in lowland rice.
650 $aGrain yield
650 $aRice
650 $aSoil
650 $aYield components
650 $aArroz
650 $aCerrado
650 $aFósforo
650 $aOryza sativa
650 $aRendimento
650 $aSolo
700 1 $aSANTOS, A. B.
700 1 $aCARVALHO, M. C. S.
773 $tCommunications in Soil Science and Plant Analysis, New York$gv. 46, n. 9, p. 1097-1111, 2015.
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