Abstract
Transposable elements randomly insert into a targeted locus at a frequency of 10-6 to 10-5. The En element has been shown in previous studies to transpose more frequently into closely linked sites. Thus, it is appropriate to place an En element onto each of the 20 chromosome arms in maize to maximize tagging efficiency. This is called chromosome labeling for tagging purposes with transposons. After a chromosome arm has been labeled with a transposon, genes residing in that arm will have a greater chance to be tagged by the transposon. To date, all of the maize chromosome arms have been labeled with at least one of five Encontaining alleles. The elements were linked to the arms using reciprocal translocations. The usage of these arm-labeled lines is discussed in the context of gene tagging.
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Communicated by F. Salamini
Journal Paper No. 15224 of the Iowa Agriculture and Home Economics Experiment Station, Ames, Iowa; Project No. 3176
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Chang, R.Y., Peterson, P.A. Chromosome labeling with transposable elements in maize. Theoret. Appl. Genetics 87, 650–656 (1994). https://doi.org/10.1007/BF00222889
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DOI: https://doi.org/10.1007/BF00222889