Transposition pattern of a modified Ds element in tomato
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Abstract
Several aspects of transposition of an in vitro modified Ds element are described. This Ds element, designated ds-r, is equipped with bacterial plasmid sequences and can, therefore, be rescued from the plant genome. Our results indicate that the Ds-r element has a ‘late’ timing of transposition from T-DNAs. This feature of the element might be advantageous for tagging experiments because it leads to independently transposed germinally transmitted elements. Furthermore, it is shown that Ds-r transposition generates clusters of insertions, indicating that ‘genes to be tagged’ should be located in genomic regions covered by insertions.
Key words
transposition Ac/Ds transgenic tomato plants RFLP mapping plasmid rescuePreview
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