Understanding Genetically Modified Citrus Buffers Through Gene Flow in an Open Pollinated Field Study

Résumé fourni par la source

The safe deployment of genetically engineered citrus requires evaluation of pollen-mediated gene flow to ensure environmental and regulatory compliance. We assessed the potential movement of the ‘D4E1’ transgene from transgenic ‘US-802::D4E1’ trees to the monoembryonic, self-incompatible cultivar US SunGlo under field conditions in Fort Pierce, FL. Flowering overlap between 104 transgenic and 26 ‘US Sunglo’ trees was monitored, and seeds from open-pollinated ‘US SunGlo’ fruit located 324 to 365 m (1063 to 1168 ft) from the nearest transgenic tree were screened for the ‘D4E1’ using a TaqMan quantitative polymerase chain reaction assay. A total of 96 seeds were tested, and none contained the transgene. These results indicate no pollen-mediated transgene movement across distances as short as 324 m (1063 ft) and suggest current regulatory buffer requirements for transgenic citrus may be conservative.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.