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Maximizing the expression of transgenic traits into elite alfalfa germplasm using a supertransgene configuration in heterozygous conditions

Abstract
Numerous species of legumes, including alfalfa, are critical factors for agroecosystems due to their ability to grow without nitrogen fertilizers derived from non-renewable fossil fuels, their contribution of organic nitrogen to the soil, and their increased nutritional value. Alfalfa is the main source of vegetable proteins in meat and milk production systems worldwide. Despite the economic and ecological importance of this autotetraploid and allogamous [ver mas...]
Numerous species of legumes, including alfalfa, are critical factors for agroecosystems due to their ability to grow without nitrogen fertilizers derived from non-renewable fossil fuels, their contribution of organic nitrogen to the soil, and their increased nutritional value. Alfalfa is the main source of vegetable proteins in meat and milk production systems worldwide. Despite the economic and ecological importance of this autotetraploid and allogamous forage crop, little progress has been made in the incorporation of transgenic traits into commercial alfalfa. This is mainly due to the unusually strong transgene silencing and complex reproductive behavior of alfalfa, which limit the production of events with high transgene expression and the introgression of selected events within heterogeneous synthetic populations, respectively. In this report, we describe a novel procedure, called supertransgene process, where a glufosinate-tolerant alfalfa variety was developed using a single event containing the BAR transgene associated with an inversion. This approach can be used to maximize the expression of transgenic traits into elite alfalfa germplasm and to reduce the cost of production of transgenic alfalfa cultivars, contributing to the public improvement of this legume forage and other polyploid and outcrossing crop species. [Cerrar]
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Author
Jozefkowicz, Cintia;   Frare, Romina Alejandra;   Odorizzi, Ariel;   Arolfo, Valeria;   Pagano, Elba Maria;   Basigalup, Daniel Horacio;   Ayub, Nicolás Daniel;   Soto, Gabriela Cinthia;  
Fuente
Theoretical and applied genetics 131 (5) : 1111–1123. (May 2018)
Date
2018-05
ISSN
0040-5752
1432-2242
URI
https://link.springer.com/article/10.1007%2Fs00122-018-3062-1
http://hdl.handle.net/20.500.12123/2599
DOI
https://doi.org/10.1007/s00122-018-3062-1
Formato
pdf
Tipo de documento
artículo
Palabras Claves
Medicago Sativa; Germoplasma; Germplasm; Transgénicos; Transgenics; Variedades; Varieties; Alfalfa;
Derechos de acceso
Restringido
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Excepto donde se diga explicitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
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