by Staff Writers
Copenhagen, Denmark (SPX) Aug 09, 2012
Plants produce toxins to defend themselves against potential enemies, from herbivorous pests to diseases. Oilseed rape plants produce glucosinolates to serve this purpose. However, due to the content of glucosinolates, farmers can only use limited quantities of the protein-rich rapeseed for pig and chicken feed.
Now, a team of researchers from the University of Copenhagen has developed a method to hinder unwanted toxins from entering the edible parts of the plant. The breakthrough was published in the scientific journal Nature.
"We have developed an entirely new technology that we call 'transport engineering'. It can be used to eliminate unwanted substances from the edible parts of crops," says Professor Barbara Ann Halkier, head of the Center of Excellence for Dynamic Molecular Interactions (DynaMo) at the University of Copenhagen's Faculty of Science.
The potential for toxin-free oilseed rape as a feed crop
This means that protein-rich rapeseed cake produced using the byproduct of rapeseeds pressed for oil, can only be used in limited quantities for pig and chicken feed. Due to this, Northern Europe continues to import large amounts of soy cake for animal feed.
Two transport proteins found
"We managed to find two proteins that transport glucosinolates into the seeds of the thale cress plant, a close relative of the oilseed rape. When we subsequently produced thale cress without these two proteins, the remarkable result was that their seeds were completely free of glucosinolates and thus suitable for feed," emphasises Barbara Ann Halkier.
Worldwide, oilseed rape is the third most widely grown oilseed-producing crop.
'Transport engineering', the new technology platform, is so promising that one of the world's largest companies involved in plant biotechnology - Bayer CropScience - is now negotiating with the University of Copenhagen's Tech Transfer Unit to collaborate with the research group so as to deploy the new technology and produce an oilseed rape plant with glucosinolate-free seeds.
According to Bayer CropScience project leader Peter Denolf such seeds will significantly enhance the use of oilseed rape meal as animal feed and bring along a more sustainable oilseed rape processing procedure.
The research results are the fruit of 16 years of basic research, an excellent example of how basic research can result in new discoveries of direct use for society.
The DOI for the scientific paper published in Nature will be 10.1038/nature11285.
University of Copenhagen
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Hong Kong tests babies over Japanese milk formula
Hong Kong (AFP) Aug 9, 2012
Hong Kong said Thursday it will test babies who have consumed Japanese-made infant formulas found to have insufficient levels of iodine, after the products were ordered off the city's shelves. Officials found the Wakodo and Morinaga brands lacked enough iodine, and warned they could have "adverse health effects" on babies' thyroid glands and brains. "We urge parents to take their babies ... read more
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