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Registro Completo |
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
17/02/2017 |
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Data da última atualização: |
16/11/2023 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
VIANA, L. de O.; CAVALCANTE, E. S.; MONTEIRO, A. F. M.; FAZOLIN, M. |
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Afiliação: |
Luana de Oliveira Viana, Fameta; Ellen Sousa Cavalcante, Uninorte; ANDRE FABIO MEDEIROS MONTEIRO, CPAF-Acre; MURILO FAZOLIN, CPAF-Acre. |
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Título: |
Influência da decomposição solar sobre a eficácia inseticida do óleo essencial de Piper aduncum L. no controle da lagarta-do-cartucho do milho. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
In: CONGRESSO REGIONAL DE PESQUISA DO ESTADO DO ACRE, 2.; SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA UFAC, 25., 2016, Rio Branco/Cruzeiro do Sul. Inovação: sustentabilidade e desenvolvimento regional: anais. Rio Branco, AC: Edufac, 2016. |
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Páginas: |
p. 125. |
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ISBN: |
978-85-8236-050-7 |
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Idioma: |
Português |
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Conteúdo: |
Os biopesticidas são uma opção ou complemento ao desenvolvimento de novas formulações para o controle de pragas, eliminando ou reduzindo o uso de agrotóxicos. A estabilidade de um produto ou composto ativo de origem natural pode ser alterada por diversos fatores ambientais. O óleo essencial Piper aduncum (OEPA) apresenta como componente majoritário o dilapiol, além de vários outros componentes químicos, que poderiam ser sensíveis à luz, temperatura, oxigênio e umidade. O objetivo deste trabalho foi avaliar possíveis alterações da composição química e da eficácia inseticida do OEPA em função da exposição aos raios solares e UVA/B. |
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Palavras-Chave: |
Aceites esenciales; Bioplaguicidas; Caterpillar; Controle de praga; Dilapiol; Eficácia inseticida; Lagarta-do-cartucho; Maiz; Oruga; Pimenta-de-macaco; Piper aduncum L; Plagas de plantas; Propriedade química. |
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Thesagro: |
Inseticida; Lagarta; Milho; Óleo essencial; Praga de planta; Radiação solar; Spodoptera frugiperda; Zea mays. |
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Thesaurus Nal: |
Biopesticides; Corn; Essential oils; Insect larvae; Plant pests. |
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Categoria do assunto: |
O Insetos e Entomologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/163469/1/26261.pdf
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Marc: |
LEADER 02208nam a2200481 a 4500
001 2064690
005 2023-11-16
008 2016 bl uuuu u00u1 u #d
020 $a978-85-8236-050-7
100 1 $aVIANA, L. de O.
245 $aInfluência da decomposição solar sobre a eficácia inseticida do óleo essencial de Piper aduncum L. no controle da lagarta-do-cartucho do milho.$h[electronic resource]
260 $aIn: CONGRESSO REGIONAL DE PESQUISA DO ESTADO DO ACRE, 2.; SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA UFAC, 25., 2016, Rio Branco/Cruzeiro do Sul. Inovação: sustentabilidade e desenvolvimento regional: anais. Rio Branco, AC: Edufac$c2016
300 $ap. 125.
520 $aOs biopesticidas são uma opção ou complemento ao desenvolvimento de novas formulações para o controle de pragas, eliminando ou reduzindo o uso de agrotóxicos. A estabilidade de um produto ou composto ativo de origem natural pode ser alterada por diversos fatores ambientais. O óleo essencial Piper aduncum (OEPA) apresenta como componente majoritário o dilapiol, além de vários outros componentes químicos, que poderiam ser sensíveis à luz, temperatura, oxigênio e umidade. O objetivo deste trabalho foi avaliar possíveis alterações da composição química e da eficácia inseticida do OEPA em função da exposição aos raios solares e UVA/B.
650 $aBiopesticides
650 $aCorn
650 $aEssential oils
650 $aInsect larvae
650 $aPlant pests
650 $aInseticida
650 $aLagarta
650 $aMilho
650 $aÓleo essencial
650 $aPraga de planta
650 $aRadiação solar
650 $aSpodoptera frugiperda
650 $aZea mays
653 $aAceites esenciales
653 $aBioplaguicidas
653 $aCaterpillar
653 $aControle de praga
653 $aDilapiol
653 $aEficácia inseticida
653 $aLagarta-do-cartucho
653 $aMaiz
653 $aOruga
653 $aPimenta-de-macaco
653 $aPiper aduncum L
653 $aPlagas de plantas
653 $aPropriedade química
700 1 $aCAVALCANTE, E. S.
700 1 $aMONTEIRO, A. F. M.
700 1 $aFAZOLIN, M.
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Registro original: |
Embrapa Acre (CPAF-AC) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Recursos Genéticos e Biotecnologia. Para informações adicionais entre em contato com cenargen.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
31/03/2009 |
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Data da última atualização: |
20/12/2023 |
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Tipo da produção científica: |
Orientação de Tese de Pós-Graduação |
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Autoria: |
RODRIGUES, J. C. M. |
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Afiliação: |
Julio Carlyle Macedo Rodrigues, Embrapa Recursos Genéticos e Biotecnologia. |
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Título: |
Epigenetic regulation and inheritance of autonomous seed development in apomictic. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
2007. |
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Páginas: |
217 p. |
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Idioma: |
Inglês |
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Notas: |
Tese (Doutorado em Filosofia) - University of Adelaide. Orientadora: Anna M. G. Koltunow. Co-orientadora: Vera Tavares de Campos Carneiro, Embrapa Recursos Genéticos e Biotecnologia. |
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Conteúdo: |
Apomixis is an intriguing and agronomically valuable asexual reproductive pathway resulting in seeds that give rise to plants that are identical in genotype to the female parent. Apomixis is absent in agriculturally important seed crops and our work has focused on the analysis of apomixis in the daisy-like genus Hieracium which contains sexual and apomictic species. Prior studies have shown that apomixis in Hieracium is controlled by two dominant loci. The LOA controls the avoidance of meiosis during female gametophyte (embryo sac) formation and the LOP locus is required for fertilization independent embryo formation during seed initiation. The genes conferring apomixis are unknown. In this study we focused on the events of autonomous seed initiation. Cytological examination of apomictic mutants that have lost LOA or LOP and analysis of their progeny enabled us to characterize developmental aspects associated with the function of these loci. Upon removal of LOA meiosis occurs normally and LOP segregates with a 1:1 ratio in the progeny, characterizing maternal gametophytic control. We also show that autonomous embryo formation segregates with autonomous endosperm formation, suggesting that these two loci are closely linked. However, upon meiotic division, embryo lethal components arise and embryo development in apomeiosis mutants was generally defective and seed set was low. Similarly, upon removal of LOP, apomixis initiation occurs normally and unreduced embryo sacs can only form seeds if pollinated. Autonomous seed initiation is actively repressed in the sexual model plant Arabidopsis by the action of a chromatin remodelling complex encoded by the FERTILIZATION INDEPENDENT SEED (FIS)-class genes. These genes are homologues of the Drosophila PcG complex that also repress gene expression throughout Drosophila development. Mutations in the FIS-class genes lead to elements of apomixis, sueh as autonomous endosperm, and in one particular mutant, autonomous egg cell development. Given the similarity in apomictic and FIS-class gene mutant phenotype we isolated three homologues from sexual and apomictic Hieracium plants: FERTILIZATION INDEPENDENT ENDOSPERM (FIE), MULTICOPY SUPPRESSOR OF IRA1 (MS11) AND RETINOBLASTOMA (RBR). FIS-class genes from sexual and apomicit Hieracium and examined their expression, interaction and function during seed initiation. The isolated Hieracium FIS-class genes were highly conserved in sexual and apomictic plants in terns of gene sequence and temporal and spatial expression pattern. Analysis of protein interactions by yeast-two hybrid showed that the HFIE gene from sexual and apomictic plants does not interact with other complex members in the same manner found in Arabidopsis. Protein modelling uncovered structural differences between the Arabidopsis and Hieracium FIE proteins. RNAi- mediated down-regulation of HFIE in sexual Hieracium did not lead to autonomous seed initiation indicating HFIE was not part of a repressive complexo Down-regulation of HFIE in sexual and apomictic plants revealed the gene was essential for embryo growth and viability. Therefore, FIS-complex genes interact differently in Arabidopsis and Hieracium and have different developmental roles. In summary, the results presented here suggest that the FIS-genes are not mutated in apomictic Hieracium plants, but they interact differently relative to the Arabidopsis counterparts and play a fundamental role in embryogenesis. Thus, engineering autonomous seed into crops will not depend on mutating these genes but rather in uncovering the molecular signal that triggers apomictic development. MenosApomixis is an intriguing and agronomically valuable asexual reproductive pathway resulting in seeds that give rise to plants that are identical in genotype to the female parent. Apomixis is absent in agriculturally important seed crops and our work has focused on the analysis of apomixis in the daisy-like genus Hieracium which contains sexual and apomictic species. Prior studies have shown that apomixis in Hieracium is controlled by two dominant loci. The LOA controls the avoidance of meiosis during female gametophyte (embryo sac) formation and the LOP locus is required for fertilization independent embryo formation during seed initiation. The genes conferring apomixis are unknown. In this study we focused on the events of autonomous seed initiation. Cytological examination of apomictic mutants that have lost LOA or LOP and analysis of their progeny enabled us to characterize developmental aspects associated with the function of these loci. Upon removal of LOA meiosis occurs normally and LOP segregates with a 1:1 ratio in the progeny, characterizing maternal gametophytic control. We also show that autonomous embryo formation segregates with autonomous endosperm formation, suggesting that these two loci are closely linked. However, upon meiotic division, embryo lethal components arise and embryo development in apomeiosis mutants was generally defective and seed set was low. Similarly, upon removal of LOP, apomixis initiation occurs normally and unreduced embryo sacs can only... Mostrar Tudo |
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Thesagro: |
Apomixia; Reprodução. |
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Thesaurus NAL: |
Hieracium. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 04273nam a2200169 a 4500
001 1167799
005 2023-12-20
008 2007 bl uuuu m 00u1 u #d
100 1 $aRODRIGUES, J. C. M.
245 $aEpigenetic regulation and inheritance of autonomous seed development in apomictic.$h[electronic resource]
260 $a2007.$c2007
300 $a217 p.
500 $aTese (Doutorado em Filosofia) - University of Adelaide. Orientadora: Anna M. G. Koltunow. Co-orientadora: Vera Tavares de Campos Carneiro, Embrapa Recursos Genéticos e Biotecnologia.
520 $aApomixis is an intriguing and agronomically valuable asexual reproductive pathway resulting in seeds that give rise to plants that are identical in genotype to the female parent. Apomixis is absent in agriculturally important seed crops and our work has focused on the analysis of apomixis in the daisy-like genus Hieracium which contains sexual and apomictic species. Prior studies have shown that apomixis in Hieracium is controlled by two dominant loci. The LOA controls the avoidance of meiosis during female gametophyte (embryo sac) formation and the LOP locus is required for fertilization independent embryo formation during seed initiation. The genes conferring apomixis are unknown. In this study we focused on the events of autonomous seed initiation. Cytological examination of apomictic mutants that have lost LOA or LOP and analysis of their progeny enabled us to characterize developmental aspects associated with the function of these loci. Upon removal of LOA meiosis occurs normally and LOP segregates with a 1:1 ratio in the progeny, characterizing maternal gametophytic control. We also show that autonomous embryo formation segregates with autonomous endosperm formation, suggesting that these two loci are closely linked. However, upon meiotic division, embryo lethal components arise and embryo development in apomeiosis mutants was generally defective and seed set was low. Similarly, upon removal of LOP, apomixis initiation occurs normally and unreduced embryo sacs can only form seeds if pollinated. Autonomous seed initiation is actively repressed in the sexual model plant Arabidopsis by the action of a chromatin remodelling complex encoded by the FERTILIZATION INDEPENDENT SEED (FIS)-class genes. These genes are homologues of the Drosophila PcG complex that also repress gene expression throughout Drosophila development. Mutations in the FIS-class genes lead to elements of apomixis, sueh as autonomous endosperm, and in one particular mutant, autonomous egg cell development. Given the similarity in apomictic and FIS-class gene mutant phenotype we isolated three homologues from sexual and apomictic Hieracium plants: FERTILIZATION INDEPENDENT ENDOSPERM (FIE), MULTICOPY SUPPRESSOR OF IRA1 (MS11) AND RETINOBLASTOMA (RBR). FIS-class genes from sexual and apomicit Hieracium and examined their expression, interaction and function during seed initiation. The isolated Hieracium FIS-class genes were highly conserved in sexual and apomictic plants in terns of gene sequence and temporal and spatial expression pattern. Analysis of protein interactions by yeast-two hybrid showed that the HFIE gene from sexual and apomictic plants does not interact with other complex members in the same manner found in Arabidopsis. Protein modelling uncovered structural differences between the Arabidopsis and Hieracium FIE proteins. RNAi- mediated down-regulation of HFIE in sexual Hieracium did not lead to autonomous seed initiation indicating HFIE was not part of a repressive complexo Down-regulation of HFIE in sexual and apomictic plants revealed the gene was essential for embryo growth and viability. Therefore, FIS-complex genes interact differently in Arabidopsis and Hieracium and have different developmental roles. In summary, the results presented here suggest that the FIS-genes are not mutated in apomictic Hieracium plants, but they interact differently relative to the Arabidopsis counterparts and play a fundamental role in embryogenesis. Thus, engineering autonomous seed into crops will not depend on mutating these genes but rather in uncovering the molecular signal that triggers apomictic development.
650 $aHieracium
650 $aApomixia
650 $aReprodução
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