gene-modified wheat at centre of row fails to repel aphids - one way car alarm
London, June 25Reuters)-
A genetically engineered wheat that can produce a special smell is thrown down in the field --
Scale tests highlight the difficulty of using controversial technologies.
Scientists say the result is disappointing, but they believe that genetic modification (GM)
Provides a way to develop elastic crops that do not require spraying of pesticides.
Critics, however, are concerned that the genetically modified plant is at risk of polluting the environment and may endanger the food chain.
The work of the Rothamsted Institute in the south of England in the United Kingdom is aimed at releasing the-
An insect's information element, or smell, which causes an anti-protest.
Threatened GM activistbut failed —
Tear off the plants.
However, while the crop survived a human attack, it did not perform well against wheat bees.
The result of five
The annual project, published in the journal Science report on Thursday, showed that despite initial success in laboratory testing, genetically modified wheat did not repel cotton-padded pests in the field as expected.
Wheat aphids damage wheat by absorbing sugar from plants and spreading viruses, prompting companies such as Bayer and Syngenta to spray a lot of pesticides.
The team of Rothamsted added genes to make wheat produce information hormones (E)-beta-
Farnessa, which is naturally present in other plants, including mint, acts as an alarm phone telling the wheat bees to disperse.
It's not clear why GM crops don't work as expected, but scientists say these wheat bees may simply adapt to the constant alarm signals, just as people use car alarms, it will never stop ringing.
Rothamsted's John Pickett says one of the ideas that is being pursued right now is that when worms arrive, the "puffs" that allow plants to produce sex hormones"
Based on insect repellent.
"We think this heralds the process of controlling insects without necessarily using spray --
He told reporters.
"This is the beginning of another method.
"The Rothamsted trial, which is not supported by commercial interests, is relatively rare in the UK because of the political opposition to GM at the European level and the cost of conducting such research.
Opposing GM means the project will take 2.
2 million ($3. 5 million)
Expenditure on fences and other security measures
Three times the cost of science.
The study was fully funded by the UK.
Committee on Biotechnology and Biological Sciences. ($1 = 0. 6360 pounds)(
Editor Keith will)