| 摘要 |
Promoter sequences identified in the genomic clone of PHSacc49 provide technology by which expression of a sense or antisense genes may be driven in transgenic plants. Sense and introduced antisense genes expression can be regulated by the same endogenous promoter to the same extent. Moreover, as a promoter native to geranium, its activity will be influenced by endogenous and exogenous signals in the same fashion and regulation of ethylene levels in plants would represent a condition that is natural to the plant.
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