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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
30/09/2008 |
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Data da última atualização: |
01/10/2008 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
GRAÇA, J. P. da; SALVADOR, M. C.; MELLO, D.; MANDARINO, J. M. G.; HOFFMANN-CAMPO, C. B. |
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Afiliação: |
José Perez da Graça, UNESP / Jaboticabal; Mariana Closs Salvador, UNESP / Jaboticabal / CNPSo; José Marcos Gontijo Mandarino, CNPSo; Clara Beatriz Hoffmann-Campo, CNPSo. |
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Título: |
Enzymatic activity of lipoxygenases, isoflavone contents, and trichomes in soybean genotypes: implication on insect plant resistance. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: ANNIVERSARY ISCE MEETING, 25., 2008, State College, Pennsylvania. [Abstracts]. State College, Pennsylvania: International Society of Chemical Ecology, 2008. p. 88. |
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Idioma: |
Inglês |
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Conteúdo: |
Soybean [Glycine max (L.) Merr.] is attacked by insects and other pests and constantly needs to activate its defenses against their injuries. Generally, plants use the synthesis 0f metabolites or morphological structures to deter or inhibit herbivorous activity. Plant lipoxygenases are enzymes involved in the biosynthesis of regulatory molecules, and in the response to insect and pathogen attacks. Trichomes are morphological structures generally related to physical plant defense. This work was carried out to evaluate lipoxygenases (LOX) enzymatic activity and density and length of trichomes in soybean genotypes ('BRS 155', 'BRS 213', 'BRS 257', 'BRS 134', 'BRS 133', 'BR 16', 'IAC 100', PI 227687, and 'Dowling'), relating these information with Nezara viridula (Hemiptera: Pentatomidae) developmental time and adult weigh. The genotypes were grown in greenhouse. Pods and seeds were morphologically and biochemically evaluated at soybean developmental stages R6, and R6 plus R8, respectively. Nymphs of stink-bugs were led with R6-pods, from the second stage to adulthood. BRS 134, BR 16, Dowling, and BRS 155 showed longer trichomes, whereas IAC 100, BRS 213, and PI 227687 presented higher density of trichomes compared with the other genotypes. At R6, seeds of BRS 155 presented the highest LOX 1 activity, BRS 155, and PI 227687 presented the highest LOX 2 and LOX 3 activities, and Dowling presented higher LOX 2 activity, At R8, BR 16, IAC 100, BRS 133, and PI 227687 presented the highest activities of LOX 1, and BRS 133 presented the highest activity of LOX 2 and 3. Adults led on BRS 155, whose seeds presented high LOXs (1, 2, and 3) activities were heavier (173,52) compared with PI 227687 (108.20 mg) and on BRS 257 (130.15 mg); developmental time varied from 21.46 to 22.57 days, but no statistical differences between treatments were detected. PI 227687 is a widely used source of insect resistance and in our trial showed higher LOX 2 and LOX 3 activities, higher trichome density and higher isoflavone contents. However, BRS-257, which presented low LOXs (1, 2, and 3) activity showed neither longer nor higher trichome density, intermediate isoflavone content compared with the other genotypes. Consequently, as indicated by this bioassay, chemical, biochemical, and mechanical factors can act synergistically on the defense of PI227687 against insect pests. Regarding BRS 257, the plant defense likely comes from other types of LOXs. Consequently, the involvement of lipoxigenases in soybean plant defense against insects is not clearly elucidated. MenosSoybean [Glycine max (L.) Merr.] is attacked by insects and other pests and constantly needs to activate its defenses against their injuries. Generally, plants use the synthesis 0f metabolites or morphological structures to deter or inhibit herbivorous activity. Plant lipoxygenases are enzymes involved in the biosynthesis of regulatory molecules, and in the response to insect and pathogen attacks. Trichomes are morphological structures generally related to physical plant defense. This work was carried out to evaluate lipoxygenases (LOX) enzymatic activity and density and length of trichomes in soybean genotypes ('BRS 155', 'BRS 213', 'BRS 257', 'BRS 134', 'BRS 133', 'BR 16', 'IAC 100', PI 227687, and 'Dowling'), relating these information with Nezara viridula (Hemiptera: Pentatomidae) developmental time and adult weigh. The genotypes were grown in greenhouse. Pods and seeds were morphologically and biochemically evaluated at soybean developmental stages R6, and R6 plus R8, respectively. Nymphs of stink-bugs were led with R6-pods, from the second stage to adulthood. BRS 134, BR 16, Dowling, and BRS 155 showed longer trichomes, whereas IAC 100, BRS 213, and PI 227687 presented higher density of trichomes compared with the other genotypes. At R6, seeds of BRS 155 presented the highest LOX 1 activity, BRS 155, and PI 227687 presented the highest LOX 2 and LOX 3 activities, and Dowling presented higher LOX 2 activity, At R8, BR 16, IAC 100, BRS 133, and PI 227687 presented the hi... Mostrar Tudo |
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Categoria do assunto: |
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Marc: |
LEADER 03235naa a2200169 a 4500
001 1470922
005 2008-10-01
008 2008 bl --- 0-- u #d
100 1 $aGRAÇA, J. P. da
245 $aEnzymatic activity of lipoxygenases, isoflavone contents, and trichomes in soybean genotypes$bimplication on insect plant resistance.
260 $c2008
520 $aSoybean [Glycine max (L.) Merr.] is attacked by insects and other pests and constantly needs to activate its defenses against their injuries. Generally, plants use the synthesis 0f metabolites or morphological structures to deter or inhibit herbivorous activity. Plant lipoxygenases are enzymes involved in the biosynthesis of regulatory molecules, and in the response to insect and pathogen attacks. Trichomes are morphological structures generally related to physical plant defense. This work was carried out to evaluate lipoxygenases (LOX) enzymatic activity and density and length of trichomes in soybean genotypes ('BRS 155', 'BRS 213', 'BRS 257', 'BRS 134', 'BRS 133', 'BR 16', 'IAC 100', PI 227687, and 'Dowling'), relating these information with Nezara viridula (Hemiptera: Pentatomidae) developmental time and adult weigh. The genotypes were grown in greenhouse. Pods and seeds were morphologically and biochemically evaluated at soybean developmental stages R6, and R6 plus R8, respectively. Nymphs of stink-bugs were led with R6-pods, from the second stage to adulthood. BRS 134, BR 16, Dowling, and BRS 155 showed longer trichomes, whereas IAC 100, BRS 213, and PI 227687 presented higher density of trichomes compared with the other genotypes. At R6, seeds of BRS 155 presented the highest LOX 1 activity, BRS 155, and PI 227687 presented the highest LOX 2 and LOX 3 activities, and Dowling presented higher LOX 2 activity, At R8, BR 16, IAC 100, BRS 133, and PI 227687 presented the highest activities of LOX 1, and BRS 133 presented the highest activity of LOX 2 and 3. Adults led on BRS 155, whose seeds presented high LOXs (1, 2, and 3) activities were heavier (173,52) compared with PI 227687 (108.20 mg) and on BRS 257 (130.15 mg); developmental time varied from 21.46 to 22.57 days, but no statistical differences between treatments were detected. PI 227687 is a widely used source of insect resistance and in our trial showed higher LOX 2 and LOX 3 activities, higher trichome density and higher isoflavone contents. However, BRS-257, which presented low LOXs (1, 2, and 3) activity showed neither longer nor higher trichome density, intermediate isoflavone content compared with the other genotypes. Consequently, as indicated by this bioassay, chemical, biochemical, and mechanical factors can act synergistically on the defense of PI227687 against insect pests. Regarding BRS 257, the plant defense likely comes from other types of LOXs. Consequently, the involvement of lipoxigenases in soybean plant defense against insects is not clearly elucidated.
700 1 $aSALVADOR, M. C.
700 1 $aMELLO, D.
700 1 $aMANDARINO, J. M. G.
700 1 $aHOFFMANN-CAMPO, C. B.
773 $tIn: ANNIVERSARY ISCE MEETING, 25., 2008, State College, Pennsylvania. [Abstracts]. State College, Pennsylvania: International Society of Chemical Ecology, 2008. p. 88.
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Registro original: |
Embrapa Soja (CNPSO) |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
08/08/2014 |
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Data da última atualização: |
08/08/2014 |
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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: |
MORAES, C. B. de; FREITAS, T. C. M. de; PIERONI, G. B.; RESENDE, M. D. V. de; ZIMBACK, L.; MORI, E. S. |
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Afiliação: |
CRISTIANO BUENO DE MORAES, FCA/UNESP; TALITHA CASELLA MOREIRA DE FREITAS, FCA/UNESP; GUSTAVO BLOISE PIERONI, Engenharia Florestal, Empresa Palmasola S.A.; MARCOS DEON VILELA DE RESENDE, CNPF; LÉO ZIMBACK, Instituto Florestal do Estado de São Paulo; EDSON SEIZO MORI, FCA/UNESP. |
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Título: |
Estimativas de parâmetros genéticos para seleção precoce de clones de Eucalyptus para região com ocorrência de geadas. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Scientia Forestalis, Piracicaba, v. 42, n. 102, p. 219-227, jun. 2014. |
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Idioma: |
Português |
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Conteúdo: |
Além de procurar o aumento da produtividade, a adaptação a solos e clima são também metas do melhoramento genético. Espécies perenes como Eucalyptus spp., possuem um ciclo muito longo e a ocorrência de geadas tornam seu cultivo limitante. O objetivo do estudo foi determinar a variabilidade genética de clones para plantio na região do município de Palma Sola, SC com eventos de geadas e determinar correlações genéticas entre idades de seleção. Um teste clonal foi instalado em 2008 no município de Palma Sola, SC no delineamento estatístico de blocos completos ao acaso, sendo avaliados 29 clones, seis repetições, seis plantas por parcela e espaçamento de 3,0 m x 3,0 m. Os caracteres silviculturais altura total de plantas, diâmetro à altura do peito (DAP) e volume de madeira foram avaliados aos 24, 36, 48 e 60 meses após o plantio. A análise de deviance e as estimativas dos parâmetros genéticos foram realizadas com base no procedimento genético estatístico REML/BLUP. Diferenças significativas foram observadas para todos os caracteres na análise de deviance. Correlações altas e significativas entre os caracteres foram observadas, indicando que a seleção precoce gerará ganhos significativos. Parte dos clones avaliados (USP/IPEF 64, USP/IPEF 78, USP/IPEF 52, USP/IPEF 68 e USP/IPEF 74) apresenta potencial para ser aproveitado no programa de melhoramento genético da empresa e em plantios comerciais na região onde se encontra o município de Palma Sola. |
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Palavras-Chave: |
Clone selection; Correlação; Espécie exótica; Improvement; Seleção de clones; Tolerância ao frio. |
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Thesagro: |
Eucalipto; Melhoramento. |
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Thesaurus NAL: |
cold tolerance; correlation; Eucalyptus. |
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Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/106239/1/EstimativasParametros.pdf
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Marc: |
LEADER 02422naa a2200313 a 4500
001 1992100
005 2014-08-08
008 2014 bl uuuu u00u1 u #d
100 1 $aMORAES, C. B. de
245 $aEstimativas de parâmetros genéticos para seleção precoce de clones de Eucalyptus para região com ocorrência de geadas.
260 $c2014
520 $aAlém de procurar o aumento da produtividade, a adaptação a solos e clima são também metas do melhoramento genético. Espécies perenes como Eucalyptus spp., possuem um ciclo muito longo e a ocorrência de geadas tornam seu cultivo limitante. O objetivo do estudo foi determinar a variabilidade genética de clones para plantio na região do município de Palma Sola, SC com eventos de geadas e determinar correlações genéticas entre idades de seleção. Um teste clonal foi instalado em 2008 no município de Palma Sola, SC no delineamento estatístico de blocos completos ao acaso, sendo avaliados 29 clones, seis repetições, seis plantas por parcela e espaçamento de 3,0 m x 3,0 m. Os caracteres silviculturais altura total de plantas, diâmetro à altura do peito (DAP) e volume de madeira foram avaliados aos 24, 36, 48 e 60 meses após o plantio. A análise de deviance e as estimativas dos parâmetros genéticos foram realizadas com base no procedimento genético estatístico REML/BLUP. Diferenças significativas foram observadas para todos os caracteres na análise de deviance. Correlações altas e significativas entre os caracteres foram observadas, indicando que a seleção precoce gerará ganhos significativos. Parte dos clones avaliados (USP/IPEF 64, USP/IPEF 78, USP/IPEF 52, USP/IPEF 68 e USP/IPEF 74) apresenta potencial para ser aproveitado no programa de melhoramento genético da empresa e em plantios comerciais na região onde se encontra o município de Palma Sola.
650 $acold tolerance
650 $acorrelation
650 $aEucalyptus
650 $aEucalipto
650 $aMelhoramento
653 $aClone selection
653 $aCorrelação
653 $aEspécie exótica
653 $aImprovement
653 $aSeleção de clones
653 $aTolerância ao frio
700 1 $aFREITAS, T. C. M. de
700 1 $aPIERONI, G. B.
700 1 $aRESENDE, M. D. V. de
700 1 $aZIMBACK, L.
700 1 $aMORI, E. S.
773 $tScientia Forestalis, Piracicaba$gv. 42, n. 102, p. 219-227, jun. 2014.
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