Cross-fertilization between genetically modified and non-genetically modified maize crops in Uruguay

Dublin Core

Título

Cross-fertilization between genetically modified and non-genetically modified maize crops in Uruguay

Tema

MAIZ
ALIMENTOS TRANSGENICOS
BIBLIOGRAFIA NACIONAL QUIMICA
2011

Abstract

The cultivation of genetically modified (GM) Bt maize (Zea mays L.) events MON810 and Bt11 is permitted in Uruguay. Local regulations specify that 10% of the crop should be a non-GM cultivar as refuge area for biodiversity, and the distance from other non-GM maize crops should be more than 250 m in order to avoid crosspollination. However, the degree of cross-fertilization between maize crops in Uruguay is unknown. The level of adventitious presence of GM material in non-GM crops is a relevant issue for organic farming, in situ conservation of genetic resources and seed production. In the research reported here, the occurrence and frequency of cross-fertilization between commercial GM and non-GM maize crops in Uruguay was assessed. The methodology comprised field sampling and detection using DAS-ELISA and PCR. Five field-pair cases where GM maize crops were grown near non-GM maize crops were identified. These cases had the potential to cross-fertilize considering the distance between crops and the similarity of the sowing dates. Adventitious presence of GM material in the offspring of non-GM crops was found in three of the five cases. Adventitious presence of event MON810 or Bt11 in non-GM maize, which were distinguished using specific primers, matched the events in the putative sources of transgenic pollen. Percentages of transgenic seedlings in the offspring of the non-GM crops were estimated as 0.56%, 0.83% and 0.13% for three sampling sites with distances of respectively 40, 100 and 330 m from the GM crops. This is a first indication that adventitious presence of transgenes in non-GM maize crops will occur in Uruguay if isolation by distance and/or time is not provided. These findings contribute to the evaluation of the applicability of the “regulated coexistence policy” in Uruguay.

Autor

Galeano, Pablo
Martínez Debat, Claudio José
Ruibal Musso, Fabiana
Galván, Guillermo A.

Fuente

Environmental Biosafety Research v.9, no. 3, 2011. -- p. 147-154

Editor

ISBR, EDP Sciences

Fecha

2011

Derechos

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(LEY 9.739 DE 17 DE DICIEMBRE DE 1937 SOBRE PROPIEDAD LITERARIA Y ARTISTICA CON LAS MODIFICACIONES INTRODUCIDAS POR LA LEY DE DERECHO DE AUTOR Y DERECHOS CONEXOS No. 17.616 DE 10 DE ENERO DE 2003, LEY 17.805 DE 26 DE AGOSTO DE 2004, LEY 18.046 DE 24 DE OCTUBRE DE 2006 LEY 18.046 DE 24 DE OCTUBRE DE 2006)

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Formato

PDF

Idioma

Inglés

Tipo

Artículo

Identificador

DOI: 10.1051/ebr/2011100

Cobertura

Uruguay
Fecha de agregación
August 26, 2013
Colección
Bibliografía Nacional Química
Tipo de Elemento
Document
Etiquetas
,
Citación
Galeano, Pablo, “Cross-fertilization between genetically modified and non-genetically modified maize crops in Uruguay,” RIQUIM - Repositorio Institucional de la Facultad de Química - UdelaR, accessed August 21, 2019, http://riquim.fq.edu.uy/items/show/818.
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