Data/hora: 05/06/2024 00:40:47

Biblioteca(s): | Embrapa Soja.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | Internacional - A
Data corrente: | 03/03/2008
Data da última atualização: | 05/08/2017
Autoria: | SANDHU, A. P. S.; ABDELNOOR, R. V.; MACKENZIE, S. A.
Afiliação: | AJAY PAL S. SANDHU, University of Nebraska Lincoln; RICARDO VILELA ABDELNOOR, CNPSO; SALLY A. MACKENZIE, University of Nebraska Lincoln.
Título: | Transgenic induction of mitochondrial rearrangements for cytoplasmic male sterility in crop plants.
Ano de publicação: | 2007
Fonte/Imprenta: | PNAS, v. 104, n. 6, p. 1766-1770, Feb. 2007.
DOI: | 10.1073/pnas.0609344104
Idioma: | Inglês
Conteúdo: | Stability of the mitochondrial genome is controlled by nuclear loci. In plants, nuclear genes suppress mitochondrial DNA rearrangements during development. One nuclear gene involved in this process is Msh1. Msh1 appears to be involved in the suppression of illegitimate recombination in plant mitochondria. To test the hypothesis that Msh1 disruption leads to the type of mitochondrial DNA rearrangements associated with naturally occurring cytoplasmic male sterility in plants, a transgenic approach for RNAi was used to modulate expression of Msh1 in tobacco and tomato. In both species, these experiments resulted in reproducible mitochondrial DNA rearrangements and a condition of male (pollen) sterility. The male sterility was, in each case, heritable, associated with normal female fertility, and apparently maternal in its inheritance. Segregation of the transgene did not reverse the male sterile phenotype, producing stable, nontransgenic male sterility. The reproducible transgenic induction of mitochondrial rearrangements in plants is unprecedented, providing a means to develop novel cytoplasmic male sterile lines for release as non-GMO or transgenic materials.
Thesagro: | Soja.
Categoria do assunto: | --
Registro original: | Embrapa Soja (CNPSO)
Exemplares: | CNPSO - (27981-1) - UPC - AP - PP - 11381 -  - 11381 - DIS