| 摘要 |
Genes specifying the biosynthesis of polyhydroxyalkanoates are placed under control of a gene switch and inserted into the genome of an oilseed crop. When the gene switch is induced by the application of its chemical inducer, the plant produces PHA but in the absence of the inducer the crop produces ordinary oilseeds. It is preferred that the inserted genes include targeting sequences which direct expression of the genes to the cytosol or glyoxysome and are expressible during seed germination. If seed of the modified plant is cultivated in the absence of the inducer and harvested it may be utilised as ordinary oilseed or, at the producer's choice, it may be subjected to a malting process in the presence of the switch inducer to produce PHA. |
