Data/hora: 17/06/2024 00:37:21

Biblioteca(s): | Embrapa Arroz e Feijão; Embrapa Recursos Genéticos e Biotecnologia.
Tipo da produção científica: | Artigo em Periódico Indexado
Data corrente: | 12/09/2005
Data da última atualização: | 28/03/2023
Autoria: | ROMANO, E.; SOARES, A.; PROITE, K.; NEIVA, S.; GROSSI, M.; FARIA, J. C.; RECH, E. L.; ARAGÃO, F. J. L.
Afiliação: | EDUARDO ROMANO DE CAMPOS PINTO, Cenargen; ALEXANDRE SOARES; KARINA PROITE; SUZANA NEIVA; MAIRA GROSSI; JOSIAS CORREA DE FARIA, CNPAF; ELIBIO LEOPOLDO RECH FILHO, Cenargen; FRANCISCO JOSE LIMA ARAGAO, Cenargen.
Título: | Transgene elimination in genetically modified dry bean and soybean lines.
Ano de publicação: | 2005
Fonte/Imprenta: | Genetics and Molecular Research, v. 4, n. 2, p. 177-184, 2005.
ISSN: | 1676-5680
Idioma: | Inglês
Conteúdo: | Transgene elimination is a poorly studied phenomenon in plants. We made genetic and molecular studies of a transgenic dry bean line immune to bean golden mosaic geminivirus and a soybean line. In both lines, the transgenes were stable during the vegetative phase but were eliminated during meiosis. Due to its potential biotechnological value, this transgenic line was micropropagated by grafting and the vegetative copies were studied for more than two years. More than 300 plants of progeny were obtained during this period, demonstrating that the phenomenon of elimination was consistently repeated and offering an opportunity for detailed study of transgene elimination, including the characterization of the integration sites. Cloning and sequencing of the transgenic loci, reciprocal crosses to untransformed plants, genomic DNA blots, and GUS assays were performed in the transgenic lines. Based on the molecular and genetic characterization, possible mechanisms involved in transgene elimination include intrachromosomal recombination, genetic instability resulting from the tissue culture manipulations, and co-elimination of transgenes, triggered by a process of genome defense.
Palavras-Chave: | BIOLOGICAL; Transgene elimination.
Thesagro: | Feijão; Phaseolus Vulgaris.
Thesaurus Nal: | biolistics.

Categoria do assunto:

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X Pesquisa, Tecnologia e Engenharia

URL:

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/220180/1/gmr2005.pdf
http://www.funpecrp.com.br/gmr/year2005/vol2-4/pdf/gmr0118.pdf

Registro original: | Embrapa Arroz e Feijão (CNPAF)

Exemplares:

CENARGEN - (25581-1) - UPC - AP - DD - SP 18561 -  - SP 18561 - DIS
CNPAF - (23527-1) - UPC - AP - PP - 2005 -  - 2005 - DIS