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Registro Completo |
Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia; Embrapa Semiárido. |
Data corrente: |
13/09/2021 |
Data da última atualização: |
15/09/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
RIBEIRO, T. P.; LOURENCO, I. T.; MELO, B. P. de; MORGANTE, C. V.; SALLES FILHO, A.; LINS, C. B. J.; FERREIRA, G. F.; MELLO, G. N.; MACEDO, L. L. P. de; LUCENA, W. A.; SILVA, M. C. M. da; OLIVEIRA‑NETO, O. B.; SA, M. F. G. de. |
Afiliação: |
THUANNE PIRES RIBEIRO, UNB; ISABELA TRISTAN LOURENCO TESSUTTI, Cenargen; BRUNO PAES DE MELO, UFV; CAROLINA VIANNA MORGANTE, CPATSA; ALVARO SALLES FILHO, UCB; CAMILA BARROZO JESUS LINS; GILANNA FALCÃO FERREIRA; GLÊNIA NUNES MELLO; LEONARDO LIMA PEPINO DE MACEDO, Cenargen; WAGNER ALEXANDRE LUCENA, Cenargen; MARIA CRISTINA MATTAR DA SILVA, Cenargen; OSMUNDO BRILHANTE OLIVEIRA‑NETO, Faculdade Planalto Central; MARIA FATIMA GROSSI DE SA, Cenargen. |
Título: |
Improved cotton transformation protocol mediated by Agrobacterium and biolistic combined-methods. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Planta, v. 254, 20, 2021. |
ISSN: |
1432-2048; 0032-0935 |
DOI: |
https://doi-org.ez103.periodicos.capes.gov.br/10.1007/s00425-021-03666-5 |
Idioma: |
Inglês |
Conteúdo: |
Cotton (Gossypium spp.) is the most important crop for natural textile fiber production worldwide. Nonetheless, one of the main challenges in cotton production are the losses resulting from insect pests, pathogens, and abiotic stresses. One effective way to solve these issues is to use genetically modified (GM) varieties. Herein, we describe an improved protocol for straightforward and cost-effective genetic transformation of cotton embryo axes, merging biolistics and Agrobacterium. The experimental steps include (1) Agrobacterium preparation, (2) seed sterilization, (3) cotton embryo excision, (4) lesion of shoot-cells by tungsten bombardment, (5) Agrobacterium-mediated transformation, (6) embryo co-culture, (7) regeneration and selection of transgenic plants in vitro, and (8) molecular characterization of plants. Due to the high regenerative power of the embryonic axis and the exceptional ability of the meristem cells for plant regeneration through organogenesis in vitro, this protocol can be performed in approximately 4?10 weeks, with an average plant regeneration of about 5.5% (±?0.53) and final average transformation efficiency of 60% (±?0.55). The transgene was stably inherited, and most transgenic plants hold a single copy of the transgene, as desirable and expected in Agrobacterium-mediated transformation. Additionally, the transgene was stably expressed over generations, and transgenic proteins could be detected at high levels in the T2 generation of GM cotton plants. The T2 progeny showed no phenotypic or productivity disparity compared to wild-type plants. Collectively, the use of cotton embryo axes and the enhanced DNA-delivery system by combining particle bombardment and Agrobacterium infection enabled efficient transgenic plant recovery, overcoming usual limitations associated with the recalcitrance of several cotton genotypes subjected to somatic embryogenesis. The improved approach states this method?s success for cotton genetic modification, allowing us to obtain GM cotton plants carrying traits, which are of fundamental relevance for the advancement of global agribusiness. MenosCotton (Gossypium spp.) is the most important crop for natural textile fiber production worldwide. Nonetheless, one of the main challenges in cotton production are the losses resulting from insect pests, pathogens, and abiotic stresses. One effective way to solve these issues is to use genetically modified (GM) varieties. Herein, we describe an improved protocol for straightforward and cost-effective genetic transformation of cotton embryo axes, merging biolistics and Agrobacterium. The experimental steps include (1) Agrobacterium preparation, (2) seed sterilization, (3) cotton embryo excision, (4) lesion of shoot-cells by tungsten bombardment, (5) Agrobacterium-mediated transformation, (6) embryo co-culture, (7) regeneration and selection of transgenic plants in vitro, and (8) molecular characterization of plants. Due to the high regenerative power of the embryonic axis and the exceptional ability of the meristem cells for plant regeneration through organogenesis in vitro, this protocol can be performed in approximately 4?10 weeks, with an average plant regeneration of about 5.5% (±?0.53) and final average transformation efficiency of 60% (±?0.55). The transgene was stably inherited, and most transgenic plants hold a single copy of the transgene, as desirable and expected in Agrobacterium-mediated transformation. Additionally, the transgene was stably expressed over generations, and transgenic proteins could be detected at high levels in the T2 generation of GM cotton plant... Mostrar Tudo |
Palavras-Chave: |
Embryonic axis; Genotype-independent transformation; Modificação genética do algodão. |
Thesagro: |
Agrobacterium Tumefaciens; Algodão; DNA; Gossypium Hirsutum; Método de Melhoramento; Planta Transgênica. |
Thesaurus Nal: |
Abiotic stress; Biolistics; Cotton; Genetic transformation; Genetically modified plants. |
Categoria do assunto: |
-- G Melhoramento Genético |
Marc: |
LEADER 03519naa a2200457 a 4500 001 2134441 005 2021-09-15 008 2021 bl uuuu u00u1 u #d 022 $a1432-2048; 0032-0935 024 7 $ahttps://doi-org.ez103.periodicos.capes.gov.br/10.1007/s00425-021-03666-5$2DOI 100 1 $aRIBEIRO, T. P. 245 $aImproved cotton transformation protocol mediated by Agrobacterium and biolistic combined-methods.$h[electronic resource] 260 $c2021 520 $aCotton (Gossypium spp.) is the most important crop for natural textile fiber production worldwide. Nonetheless, one of the main challenges in cotton production are the losses resulting from insect pests, pathogens, and abiotic stresses. One effective way to solve these issues is to use genetically modified (GM) varieties. Herein, we describe an improved protocol for straightforward and cost-effective genetic transformation of cotton embryo axes, merging biolistics and Agrobacterium. The experimental steps include (1) Agrobacterium preparation, (2) seed sterilization, (3) cotton embryo excision, (4) lesion of shoot-cells by tungsten bombardment, (5) Agrobacterium-mediated transformation, (6) embryo co-culture, (7) regeneration and selection of transgenic plants in vitro, and (8) molecular characterization of plants. Due to the high regenerative power of the embryonic axis and the exceptional ability of the meristem cells for plant regeneration through organogenesis in vitro, this protocol can be performed in approximately 4?10 weeks, with an average plant regeneration of about 5.5% (±?0.53) and final average transformation efficiency of 60% (±?0.55). The transgene was stably inherited, and most transgenic plants hold a single copy of the transgene, as desirable and expected in Agrobacterium-mediated transformation. Additionally, the transgene was stably expressed over generations, and transgenic proteins could be detected at high levels in the T2 generation of GM cotton plants. The T2 progeny showed no phenotypic or productivity disparity compared to wild-type plants. Collectively, the use of cotton embryo axes and the enhanced DNA-delivery system by combining particle bombardment and Agrobacterium infection enabled efficient transgenic plant recovery, overcoming usual limitations associated with the recalcitrance of several cotton genotypes subjected to somatic embryogenesis. The improved approach states this method?s success for cotton genetic modification, allowing us to obtain GM cotton plants carrying traits, which are of fundamental relevance for the advancement of global agribusiness. 650 $aAbiotic stress 650 $aBiolistics 650 $aCotton 650 $aGenetic transformation 650 $aGenetically modified plants 650 $aAgrobacterium Tumefaciens 650 $aAlgodão 650 $aDNA 650 $aGossypium Hirsutum 650 $aMétodo de Melhoramento 650 $aPlanta Transgênica 653 $aEmbryonic axis 653 $aGenotype-independent transformation 653 $aModificação genética do algodão 700 1 $aLOURENCO, I. T. 700 1 $aMELO, B. P. de 700 1 $aMORGANTE, C. V. 700 1 $aSALLES FILHO, A. 700 1 $aLINS, C. B. J. 700 1 $aFERREIRA, G. F. 700 1 $aMELLO, G. N. 700 1 $aMACEDO, L. L. P. de 700 1 $aLUCENA, W. A. 700 1 $aSILVA, M. C. M. da 700 1 $aOLIVEIRA‑NETO, O. B. 700 1 $aSA, M. F. G. de 773 $tPlanta$gv. 254, 20, 2021.
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Embrapa Semiárido (CPATSA) |
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Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
20/09/2004 |
Data da última atualização: |
24/06/2021 |
Tipo da produção científica: |
Autoria/Organização/Edição de Livros |
Autoria: |
AGUIAR, L. M. de S.; CAMARGO, A. J. A. de (ed.). |
Título: |
Cerrado: ecologia e caracterizacao. |
Ano de publicação: |
2004 |
Fonte/Imprenta: |
Brasilia, DF: Embrapa Informacao Tecnologica; Planaltina, DF: Embrapa Cerrados, 2004. |
Páginas: |
249 p. |
Descrição Física: |
il. |
ISBN: |
8573832614 |
Idioma: |
Português |
Conteúdo: |
A diversidade biologica do Cerrado; Impactos sobre o estrato herbaceo de areas umidas do Cerrado; Queimadas de Cerrado: caracterizacao e impactos; Monitoramento da diversidade de mariposas (Lepidoptera) em areas agricolas; Herbivoros e herbivoria no Cerrado: lagartas como exemplo; Potencial economico da biodiversidade do Cerrado: estadio atual e possibilidades de manejo sustentavel dos recursos da flora; Educacao ambiental e participacao: estrategias para a preservacao e para a conservacao ambiental. |
Thesagro: |
Biodiversidade; Cerrado; Conservação; Ecologia; Espécie Nativa; Fauna; Impacto Ambiental. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/224038/1/CERRADO-Ecologia-e-caracterizacao.pdf
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Marc: |
LEADER 01123nam a2200229 a 4500 001 1566918 005 2021-06-24 008 2004 bl uuuu 00u1 u #d 020 $a8573832614 100 1 $aAGUIAR, L. M. de S. 245 $aCerrado$becologia e caracterizacao. 260 $aBrasilia, DF: Embrapa Informacao Tecnologica; Planaltina, DF: Embrapa Cerrados$c2004 300 $a249 p.$cil. 520 $aA diversidade biologica do Cerrado; Impactos sobre o estrato herbaceo de areas umidas do Cerrado; Queimadas de Cerrado: caracterizacao e impactos; Monitoramento da diversidade de mariposas (Lepidoptera) em areas agricolas; Herbivoros e herbivoria no Cerrado: lagartas como exemplo; Potencial economico da biodiversidade do Cerrado: estadio atual e possibilidades de manejo sustentavel dos recursos da flora; Educacao ambiental e participacao: estrategias para a preservacao e para a conservacao ambiental. 650 $aBiodiversidade 650 $aCerrado 650 $aConservação 650 $aEcologia 650 $aEspécie Nativa 650 $aFauna 650 $aImpacto Ambiental 700 1 $aCAMARGO, A. J. A. de
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