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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
18/02/2016 |
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Data da última atualização: |
29/08/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
DOMICIANO, G. P.; CACIQUE, I. S.; FREITAS, C. C.; FILIPPI, M. C. C.; DAMATTA, F. M.; VALE, F. X. R. do; RODRIGUES, F. A. |
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Afiliação: |
GISELE PEREIRA DOMICIANO, UNIVERSIDADE FEDERAL DE VIÇOSA; ISAIAS SEVERINO CACIQUE, UNIVERSIDADE FEDERAL DE VIÇOSA; CECILIA CHAGAS FREITAS, UNIVERSIDADE FEDERAL DE VIÇOSA; MARTA CRISTINA CORSI DE FILIPPI, CNPAF; FABIO MURILO DAMATTA, UNIVERSIDADE FEDERAL DE VIÇOSA; FRANCISCO XAVIER RIBEIRO DO VALE, UNIVERSIDADE FEDERAL DE VIÇOSA; FABRÍCIO ÁVILA RODRIGUES, UNIVERSIDADE FEDERAL DE VIÇOSA. |
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Título: |
Alterations in gas exchange and oxidative metabolism in rice leaves infected by Pyricularia oryzae are attenuated by silicon. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Phytopathology, v. 105, n. 6, p. 738-747, June 2015. |
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DOI: |
10.1094/PHYTO-10-14-0280-R |
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Idioma: |
Inglês |
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Conteúdo: |
Rice blast, caused by Pyricularia oryzae, is the most important disease in rice worldwide. This study investigated the effects of silicon (Si) on the photosynthetic gas exchange parameters (net CO2 assimilation rate [A], stomatal conductance to water vapor [gs], internal-to-ambient CO2 concentration ratio [Ci/Ca], and transpiration rate [E]); chlorophyll fluorescence a (Chla) parameters (maximum photochemical efficiency of photosystem II [Fv/Fm], photochemical [qP] and nonphotochemical [NPQ] quenching coefficients, and electron transport rate [ETR]); concentrations of pigments, malondialdehyde (MDA), and hydrogen peroxide (H2O2); and activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), glutathione reductase (GR), and lypoxigenase (LOX) in rice leaves. Rice plants were grown in a nutrient solution containing 0 or 2 mM Si (-Si or +Si, respectively) with and without P. oryzae inoculation. Blast severity decreased with higher foliar Si concentration. The values of A, gs and E were generally higher for the +Si plants in comparison with the -Si plants upon P. oryzae infection. The Fv/Fm, qp, NPQ, and ETR were greater for the +Si plants relative to the -Si plants at 108 and 132 h after inoculation (hai). The values for qp and ETR were significantly higher for the -Si plants in comparison with the +Si plants at 36 hai, and the NPQ was significantly higher for the -Si plants in comparison with the +Si plants at 0 and 36 hai. The concentrations of Chla, Chlb, Chla+b, and carotenoids were significantly greater in the +Si plants relative to the -Si plants. For the -Si plants, the MDA and H2O2 concentrations were significantly higher than those in the +Si plants. The LOX activity was significantly higher in the +Si plants than in the -Si plants. The SOD and GR activities were significantly higher for the -Si plants than in the +Si plants. The CAT and APX activities were significantly higher in the +Si plants than in the -Si plants. The supply of Si contributed to a decrease in blast severity, improved the gas exchange performance, and caused less dysfunction at the photochemical level. MenosRice blast, caused by Pyricularia oryzae, is the most important disease in rice worldwide. This study investigated the effects of silicon (Si) on the photosynthetic gas exchange parameters (net CO2 assimilation rate [A], stomatal conductance to water vapor [gs], internal-to-ambient CO2 concentration ratio [Ci/Ca], and transpiration rate [E]); chlorophyll fluorescence a (Chla) parameters (maximum photochemical efficiency of photosystem II [Fv/Fm], photochemical [qP] and nonphotochemical [NPQ] quenching coefficients, and electron transport rate [ETR]); concentrations of pigments, malondialdehyde (MDA), and hydrogen peroxide (H2O2); and activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), glutathione reductase (GR), and lypoxigenase (LOX) in rice leaves. Rice plants were grown in a nutrient solution containing 0 or 2 mM Si (-Si or +Si, respectively) with and without P. oryzae inoculation. Blast severity decreased with higher foliar Si concentration. The values of A, gs and E were generally higher for the +Si plants in comparison with the -Si plants upon P. oryzae infection. The Fv/Fm, qp, NPQ, and ETR were greater for the +Si plants relative to the -Si plants at 108 and 132 h after inoculation (hai). The values for qp and ETR were significantly higher for the -Si plants in comparison with the +Si plants at 36 hai, and the NPQ was significantly higher for the -Si plants in comparison with the +Si plants at 0 and 36 hai. The concentrations of Chla... Mostrar Tudo |
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Palavras-Chave: |
Fungal infection. |
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Thesagro: |
Arroz; Brusone; Doença de planta; Fotossíntese; Oryza sativa; Pyricularia oryzae. |
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Categoria do assunto: |
H Saúde e Patologia |
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Marc: |
LEADER 03018naa a2200289 a 4500
001 2037587
005 2024-08-29
008 2015 bl uuuu u00u1 u #d
024 7 $a10.1094/PHYTO-10-14-0280-R$2DOI
100 1 $aDOMICIANO, G. P.
245 $aAlterations in gas exchange and oxidative metabolism in rice leaves infected by Pyricularia oryzae are attenuated by silicon.$h[electronic resource]
260 $c2015
520 $aRice blast, caused by Pyricularia oryzae, is the most important disease in rice worldwide. This study investigated the effects of silicon (Si) on the photosynthetic gas exchange parameters (net CO2 assimilation rate [A], stomatal conductance to water vapor [gs], internal-to-ambient CO2 concentration ratio [Ci/Ca], and transpiration rate [E]); chlorophyll fluorescence a (Chla) parameters (maximum photochemical efficiency of photosystem II [Fv/Fm], photochemical [qP] and nonphotochemical [NPQ] quenching coefficients, and electron transport rate [ETR]); concentrations of pigments, malondialdehyde (MDA), and hydrogen peroxide (H2O2); and activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), glutathione reductase (GR), and lypoxigenase (LOX) in rice leaves. Rice plants were grown in a nutrient solution containing 0 or 2 mM Si (-Si or +Si, respectively) with and without P. oryzae inoculation. Blast severity decreased with higher foliar Si concentration. The values of A, gs and E were generally higher for the +Si plants in comparison with the -Si plants upon P. oryzae infection. The Fv/Fm, qp, NPQ, and ETR were greater for the +Si plants relative to the -Si plants at 108 and 132 h after inoculation (hai). The values for qp and ETR were significantly higher for the -Si plants in comparison with the +Si plants at 36 hai, and the NPQ was significantly higher for the -Si plants in comparison with the +Si plants at 0 and 36 hai. The concentrations of Chla, Chlb, Chla+b, and carotenoids were significantly greater in the +Si plants relative to the -Si plants. For the -Si plants, the MDA and H2O2 concentrations were significantly higher than those in the +Si plants. The LOX activity was significantly higher in the +Si plants than in the -Si plants. The SOD and GR activities were significantly higher for the -Si plants than in the +Si plants. The CAT and APX activities were significantly higher in the +Si plants than in the -Si plants. The supply of Si contributed to a decrease in blast severity, improved the gas exchange performance, and caused less dysfunction at the photochemical level.
650 $aArroz
650 $aBrusone
650 $aDoença de planta
650 $aFotossíntese
650 $aOryza sativa
650 $aPyricularia oryzae
653 $aFungal infection
700 1 $aCACIQUE, I. S.
700 1 $aFREITAS, C. C.
700 1 $aFILIPPI, M. C. C.
700 1 $aDAMATTA, F. M.
700 1 $aVALE, F. X. R. do
700 1 $aRODRIGUES, F. A.
773 $tPhytopathology$gv. 105, n. 6, p. 738-747, June 2015.
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Embrapa Arroz e Feijão (CNPAF) |
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| 9. |  | ANDRÉA, M. M. de; MATALLO, M. B.; TOMITA, R. Y.; LUCHINI, L. C. Effect of temperature on dissipation of [14C] atrazine in a Brazilian soil. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 32, n. 1, p. 95-100, jan. 1997. Título em português: Efeito da temperatura na dissipação de [14C] - atrazina em solo brasileiro.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 10. | | MUSUMECI, M. R.; NAKAGAWA, L. E.; LUCHINI, L. C.; MATALLO, M. B.; ANDREA, M. M. de. Degradação do diuron-14C em solo e em plantas de cana-de-açúcar (Saccharum spp.). Pesquisa Agropecuária Brasileira, Brasília, DF, v. 30, n. 6, p. 775-778, jun. 1995. Título em inglês: 14C-Diuron degradation in soil and in sugar-cane plants (Saccharum spp.).| Biblioteca(s): Embrapa Unidades Centrais. |
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| 12. | | ANDRÉA, M. M. de; PERES, T. B.; LUCHINI, L. C.; BAZARIN, S.; PAPINI, S.; MATALLO, M. B.; SAVOY, V. L. T. Influence of repeated applications of glyphosate on its persistence and soil bioactivity. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 38, n. 11, p. 1329-1335, nov. 2003 Título em português: Influência de repetidas aplicações de glifosato na sua persistência e na bioatividade do solo.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 13. | | NIEMEYER, J. C.; CARDOSO, E. J. B. N.; NUNES, M. E. T.; ALVES, P. R. L.; MARTINES, A. M.; ANDRÉA, M. M. de; BROWN, G. G.; NIVA, C. C. Preparo do substrato teste. In: NIVA, C. C.; BROWN, G. G. (Ed.). Ecotoxicologia terrestre: métodos e aplicações dos ensaios com oligoquetas. Brasília, DF: Embrapa, 2019. Cap. 7, p. 143-151.| Tipo: Capítulo em Livro Técnico-Científico |
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