Seed firms deny access to transgene
A team led by Allison Snow at Ohio State University in Columbus has uncovered preliminary evidence that a transgene that confers insect resistance can increase the number of seeds produced by wild sunflowers, and could allow the wild plants to proliferate as weeds.
But Pioneer Hi-Bred International and Dow AgroSciences have blocked a follow-up study by refusing to allow the team access to either the transgene or seeds from the earlier study. Although such a refusal is unusual, a similar situation recently confronted a plant geneticist from a leading US research university, who wanted to carry out an evolutionary study of Mexican maize.
Link to full Nature news article
Reference: Nature 419, 655 (2002)