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2005-03-15 | permalink
Transgenic poplars could make China a big player in lumber. But some experts worry about effects on nature. Scattered across at least seven provinces in China are more than 1 million common poplar trees with an uncommon bite. They can kill the insects that nibble their leaves. Their unusual defensive system is a genetically engineered bomb: Bacillus thuringiensis, or Bt, a naturally occurring toxin inserted into the tree’s DNA. Other such transgenic species, such as the larch and walnut, are in the works, Chinese researchers report.
2005-03-15 | permalink
Transgenic poplars could make China a big player in lumber. But some experts worry about effects on nature. Scattered across at least seven provinces in China are more than 1 million common poplar trees with an uncommon bite. They can kill the insects that nibble their leaves. Their unusual defensive system is a genetically engineered bomb: Bacillus thuringiensis, or Bt, a naturally occurring toxin inserted into the tree’s DNA. Other such transgenic species, such as the larch and walnut, are in the works, Chinese researchers report.
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