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Plant Transposable Elements and Their Role in Evolution
( H . Saedler,P . Meyer,Zs . Schwarz Sommer ) 한국유전학회 1988 Genes & Genomics Vol.10 No.4
Transposable elements (TE) have been described in numerous plant species genetically and in Antirrhinum majus and Zea mays molecularly. TE migrate through the genome thereby frequently producing mutations. Their inprecise excision leaves footprints behind. It is this DNA-sequence diversity generated upon excision of an integrated TE which is thought to be one of their prominent biological functions. On the other hand TE can serve as cis- and trans-acting modules in the evolution of new expression and regulatory units. As far as application is concerned TE are ideal tools in the isolation of genes of interest. Experiments will be described, how a gene from Zea mays, whose function was only badly defined was isolated by transposon tagging. The characterization of its structure and function and last but not least the transfer of the amize Al gene into a Petunia hybrid mutant using a newly developed DNA-transfer method to implement a new biosynthetic pathway in Petunia resulting in a new color variety.